Convertidores DC-DC
Productos (764)
IR3883MTRPBF - 3A 800kHz Integrated POL Buck Regulator | Infineon
The Infineon IR3883MTRPBF is a 3 A synchronous buck regulator with integrated MOSFETs, switching at a fixed 800 kHz, housed in a 16-lead PQFN (3 x 3 mm) package. It provides an adjustable output voltage from 0.5 V up to a value determined by the input rail, and operates from a wide VIN range suitable for point-of-load conversion in distributed power architectures. A buck converter (step-down switching regulator) is a DC-DC power topology that efficiently reduces a higher input voltage to a lower regulated output voltage by chopping the input with a high-side switch and smoothing the result through an LC filter. Compared with linear regulators, switching bucks dissipate far less power at large VIN-VOUT deltas, making them the preferred choice for high-current POL rails. The IR3883MTRPBF sits within the family of integrated POL regulators (Point-of-Load ICs) in the broader power management IC category, where the controller, gate drivers, and power MOSFETs are co-packaged for minimum footprint and design simplicity. Key differentiating features include Infineon's Enhanced Stability (EaSy) engine, which provides loop compensation without external RC networks and allows the use of all-ceramic output capacitors. The on-chip PWM controller plus monolithic MOSFETs form a complete synchronous buck in a 3 x 3 mm PQFN footprint, enabling high power density. Internal 5 V LDO bias supports single-rail operation, and built-in protection features (OCP, OVP, UVLO, thermal shutdown) increase system robustness. The architecture uses voltage-mode control with the EaSy compensation scheme to maintain stable operation across load and temperature variations. Synchronous rectification replaces the external Schottky diode with a low-side MOSFET, achieving higher efficiency than asynchronous buck topologies at light loads due to diode conduction loss elimination. The 800 kHz switching frequency is a deliberate balance between inductor size and switching loss. Typical applications include server and telecom POL rails, FPGA and ASIC core supplies, networking switch point-of-load conversion, DDR memory VTT rails, and industrial embedded computing modules. Its small footprint and high efficiency make it well suited for space-constrained boards where multiple POL voltages are required. When designing with the IR3883MTRPBF, place a 2.2 uF low-ESR ceramic bypass close to the VCC pin and follow Infineon's recommended inductor and output capacitor selections to remain within the EaSy stability envelope. For single-rail operation, connect VIN to PVIN directly; for an external bias, tie VIN to VCC to bypass the internal LDO. This page synthesizes distributor pricing, drop-in compatible alternatives, and practical design notes not consolidated on the manufacturer datasheet alone.
IR3889MTRPBF - 30A Sync Buck Regulator | Infineon | POL
The IR3889MTRPBF is a fully integrated synchronous buck regulator from Infineon Technologies, part of the OptiMOS IPOL (integrated point-of-load) family. It delivers up to 30A of continuous output current from a 4.3V to 17V single supply, or from 2.0V to 17V when an external VCC is supplied, in a compact PG-IQFN-31 package measuring 5mm x 6mm. A synchronous buck converter is a DC-DC step-down regulator that uses a high-side and low-side MOSFET instead of a diode to reduce conduction losses, making it the preferred topology for high-current point-of-load conversion. The IR3889 belongs to the power management IC hierarchy: IPOL -> integrated power stage -> DC-DC converter -> voltage regulator. It integrates the PWM controller, OptiMOS power MOSFETs, and bootstrap diode, minimizing external component count. Key features include a fast Constant-On-Time (COT) control engine that eliminates complex loop compensation and achieves rapid transient response, stability with ceramic output capacitors, and a precision 0.8V +/-0.5% reference. The output voltage is adjustable from 0.5V to 0.875 x VIN. Technically, the enhanced COT scheme simplifies design while providing fast control response to load steps typical of FPGA and processor cores. The integrated OptiMOS FETs deliver high efficiency at 30A, and the QFN exposed pad provides low thermal resistance for heat extraction into the PCB copper pour. Typical applications include 30A POL rails for networking switches, servers, storage systems, and telecom infrastructure powering FPGAs, ASICs, and DSPs. Pricing starts at approximately $1.82 (as of 2026-08-29, LCSC). Design tip: solder the exposed pad to a large copper area; at 30A loads, thermal management and minimum output capacitance per the datasheet are critical for stability.
IS6605A - 6A Synchronous Buck Converter 4-16V Input | Innovisionsemi
The Innovisionsemi IS6605A is a high-efficiency, single-channel, FET-integrated synchronous buck (step-down) DC-DC converter that delivers up to 6 A of continuous output current from a 14-pin WFQFN (2x3 mm) package. It accepts a wide 4 V to 16 V input range and produces an adjustable output from 0.6 V to 5.5 V, making it suitable for point-of-load (POL) applications in server, telecom, and similar digital systems where board area is constrained. A synchronous buck converter is a switching regulator topology that uses two MOSFETs (a high-side switch and a low-side synchronous rectifier) instead of a diode to convert a higher DC voltage to a lower DC voltage. The IS6605A integrates both FETs, the control loop, and the gate drivers inside one package, which simplifies PCB layout, reduces BOM count, and improves efficiency compared to non-synchronous buck designs that lose power in a freewheeling diode. Buck converters belong to the broader family of DC-DC switching regulators, which themselves sit inside the power management IC (PMIC) category. Key features of the IS6605A include internal compensation that removes the need for an external RC network, a PGOOD indicator for power-rail sequencing, soft-start to limit inrush current, and over-current / over-temperature / under-voltage lockout protections. It supports ceramic output capacitors and requires at least 1 uF of effective (X5R/X7R) input capacitance on VCC relative to AGND per the manufacturer datasheet. Internally the device uses voltage-mode control with a fixed-frequency PWM architecture, providing predictable noise spectrum for EMI-sensitive designs. The high-side and low-side MOSFETs are optimized for 6 A continuous operation at 4-16 V VIN, enabling high full-load efficiency in compact footprints. Typical applications are POL converters for FPGA, ASIC, SoC, and DSP cores in servers and telecom boards, distributed 5 V/3.3 V/1.8 V/1.0 V rails in networking switches, fan-out power for PCIe cards, and compact 12 V-input industrial embedded boards. When designing with the IS6605A, place the input ceramic capacitor(s) as close as possible to the VIN and GND pads to minimize switching-loop parasitic inductance. Ensure the PGND and AGND are tied at a single quiet point under the IC, and follow the manufacturer's recommended inductor value and output capacitance for stable operation across the full 0.6 V to 5.5 V output range. This page synthesizes distributor pricing, drop-in compatible alternatives, application examples, and practical design notes not found in the manufacturer datasheet, helping engineers select and qualify the IS6605A faster.
ISL6215CA-T - 3-Output IMVP-3 PWM Controller | Renesas
Renesas Electronics ISL6215CA-T is a special-purpose voltage-mode PWM controller for Intel IMVP-3 three-output CPU power systems, packaged in a 28-pin SSOP/QSOP. The verified listing identifies three regulated outputs, a controller function, and a 3.90 mm-wide package; detailed electrical limits, switching frequency, phase configuration, voltage ranges, current ratings, and thermal limits were not present in the supplied data. They therefore must not be inferred from related ISL6215-family devices. A multi-phase buck PWM controller is a specialized DC-DC converter controller that coordinates several switching power stages to produce a low-voltage CPU rail from a higher-voltage input. Within the power-management hierarchy, it belongs to DC-DC converters and power-management integrated circuits. Intel IMVP-3 systems divide high-current conversion into multiple phases, allowing inductor and switching-device current to be distributed while the controller generates the required gate-drive and sequencing signals. The verified distributor record specifically describes the ISL6215CA-T as a controller for Intel IMVP-3 with three outputs. That architecture makes it relevant to legacy processor power-supply designs rather than general-purpose point-of-load or low-voltage buck regulators. The -T ordering code identifies the supplied tape-and-reel variant, but the supplied web data does not state the standard reel quantity. The package is described variously as 28-SSOP/QSOP and 28-SSOP with a 0.154-inch, 3.90 mm body width. Renesas states that the ISL6215 family is supported only for customers that have already adopted these products. That language makes lifecycle status a special concern: the part may remain orderable for installed-base support, but the provided data does not establish a broad new-design commitment. Procurement should therefore depend on manufacturer confirmation, authorized-distributor inventory, and the original platform requirements rather than treating the family as a general current-design choice. Typical uses include replacement or repair of an existing Intel Pentium 4-M or compatible IMVP-3 motherboard power system. In such equipment, the ISL6215CA-T would operate with the platform-specific MOSFETs, inductors, sensing network, and firmware-defined power states. Its suitability for a new design cannot be confirmed without the datasheet, reference circuit, operating limits, and Intel validation requirements. This page limits its claims to facts present in the verified distributor and manufacturer search results. The main design consideration is not substituting the IC blindly. IMVP-3 rails can impose exact pinout, timing, gate-drive, sensing, startup, and power-sequence requirements that generic three-output controllers may not meet. Before substitution, compare the complete 28-pin mapping, compensation method, phase count, output-voltage range, current capability, switching frequency, operating temperature, and supported Intel validation. Use the original schematic and manufacturer documentation as the controlling references. This page consolidates verified catalog descriptions, sourcing links, and strict replacement cautions beyond a basic distributor listing. It intentionally does not invent electrical specifications, pricing, pin assignments, lifecycle dates, or drop-in equivalents where the supplied evidence is absent. Those omissions are marked as data needed so engineers can distinguish verified facts from assumptions before committing to a legacy processor power supply.
ISL6558CRZ-T - 2-4 Phase Precision Buck Controller | Renesas
The Renesas Electronics ISL6558CRZ-T is a precision multiphase PWM controller for high-current, high-slew-rate, synchronous step-down DC-DC converters, supporting two to four channels and housed in a 20-QFN package with an exposed pad. It accepts companion gate drivers including HIP6601B, HIP6602B, HIP6603B, or ISL6605. According to the verified Renesas product material, the controller regulates output voltage, balances load currents, and provides protection functions for two to four synchronous-rectified buck channels. The -T suffix identifies the supplied tape-and-reel ordering option. A multiphase PWM controller is a specialized DC-DC converter control IC that coordinates several synchronized power stages. By distributing current among multiple phases, it supports higher output current, faster transient response, and lower effective ripple than a single-phase design. The ISL6558 sits within the hierarchy of PWM controllers, voltage-regulator ICs, DC-DC converters, and power-management semiconductors. It is intended to work with external MOSFETs and companion gate drivers rather than directly supplying the converter output. The controller is designed for demanding CPU, GPU, networking, and other high-current digital rails. Renesas describes support for optional active voltage positioning, a technique that changes the converter's effective transient response through feedback or control settings. The architecture also includes current balancing and protection functions intended to improve operation across multiple power channels. Exact voltage, current, frequency, timing, and electrical limits are not present in the supplied verified excerpts and therefore must be confirmed from the manufacturer datasheet before design release. The ISL6558 can be used in two-, three-, or four-phase synchronous buck arrangements when paired with the specified companion drivers and an appropriate external MOSFET power stage. This makes it suitable for high-current, high-slew-rate applications where load steps require rapid response and low output ripple. The 20-QFN exposed-pad package also supports compact converter layouts, but exposed-pad thermal design and gate-drive layout remain critical. When designing around the ISL6558CRZ-T, follow the Renesas datasheet for compensation, current-sense implementation, gate-driver selection, MOSFET selection, and protection settings. Do not substitute a controller solely because its nominal phase count is similar; verify pin mapping, voltage ratings, timing, and compensation requirements. The device is a controller, so external gate drivers, inductors, high-current MOSFETs, and capacitors determine the converter's final output capability. This page combines the verified Renesas product description, distributor package and ordering information, datasheet references, and practical design guidance. It distinguishes confirmed information from parameters that still require datasheet confirmation, helping engineers avoid treating a general multiphase-controller description as a complete electrical specification.
ISL6558IR - Multi-Phase PWM Controller | Renesas
The Renesas Electronics ISL6558IR is a multi-phase PWM controller IC designed for high-current, high-slew-rate buck-converter systems, and the verified distributor listing identifies a positive-output step-down DC-DC controller in a 20-QFN (5x5 mm) package. It is intended to work with companion gate drivers such as HIP6601B, HIP6602B, HIP6603B, or ISL6605. The controller architecture is suited to multi-phase power conversion, where several power stages share the load and improve transient response, current sharing, and high-current delivery. The available verified data confirms the controller category and package, but does not provide the complete electrical limit set needed to state operating voltage, switching frequency, phase count, gate-drive details, or thermal ratings without qualification. A multi-phase PWM controller is a power-management semiconductor that coordinates multiple buck-converter phases. It generates control signals for external gate drivers, which in turn drive the switching devices and power inductors in each phase. Compared with a single-phase regulator, a multi-phase architecture can distribute current across multiple inductors, reduce current ripple in individual components, and increase usable output current. The ISL6558IR is therefore positioned between a basic PWM controller and a complete converter: the external gate drivers, MOSFETs, inductors, and capacitors remain necessary for the final power stage. The ISL6558IR datasheet describes it as a multi-purpose precision multi-phase PWM controller with optional active voltage positioning. The verified data identifies compatibility with four named gate-driver families, which gives a designer several implementation paths depending on the selected driver and external switching components. Active voltage positioning, when supported by the system configuration, can help shape load-droop behavior during transient events. The exact setpoint ranges, control-loop limits, fault responses, and compensation requirements must be taken directly from the manufacturer datasheet before release to production. The principal design challenge is ensuring correct phase coordination, gate-driver timing, current sharing, and layout control in a multi-phase power supply. Place the controller and its decoupling close to the associated support circuitry, keep high-current switching loops compact, and provide adequate thermal relief around the 20-QFN device and external power components. The 5x5 mm QFN package helps reduce board area, but package size alone does not establish current capability or thermal performance. Those values must be verified from the complete ISL6558 data before layout sign-off. Typical uses for the ISL6558IR include high-current server and desktop voltage rails, processor power systems, networking equipment, graphics systems, and other multiphase buck converters. It is most appropriate when the design needs several externally switched phases, precise PWM coordination, or the flexibility to select a companion gate driver. It is not a standalone regulator and should not be selected without planning the MOSFETs, inductors, current-sense elements, compensation, and gate-driver interface. A practical selection check begins with confirming the target controller package and pinout, then verifying the companion gate driver, switching frequency, phase configuration, voltage range, current capability, and protection requirements. For a replacement decision, the part must match both the footprint and the control-interface behavior; package similarity alone is insufficient. This page distinguishes verified catalog facts from parameters that still require confirmation from the manufacturer datasheet, helping engineers avoid false precision during component qualification. This page combines verified distributor identity, package information, controller function, companion-driver references, and engineering-oriented design guidance. It does not invent missing electrical specifications, pricing, lifecycle claims, compliance declarations, or unverified alternatives. For purchasing, obtain a current authorized quotation and confirm package marking, date code, and manufacturing status with the supplier.
ISL68124IRAZ-T7A - Digital 4-Phase PWM Controller | Renesas
The Renesas ISL68124IRAZ-T7A is a digital dual-output, flexible multiphase (X+Y ≤ 4) PWM controller supporting PMBus 1.3 specifications, housed in a 40-pin TQFN (5x5) package with exposed pad. Either output can be configured for any desired phase assignments up to four phases across two outputs (3+1, 2+2, 2+1, or 4+0). The controller drives an external gate driver such as the ISL66xx family and supports switching frequencies from 200 kHz to 1 MHz per phase. A digital PWM controller is an IC that regulates DC voltage in multiphase buck converter topologies by generating precisely timed pulse-width modulated signals. It belongs to the power management IC hierarchy: PWM controller -> DC-DC controller -> voltage regulator -> power management IC. Digital controllers such as the ISL68124 use a microcontroller core to implement control loops, telemetry, and PMBus communication, replacing analog compensation networks with firmware-based control and providing real-time configurability, telemetry, and adaptive voltage positioning. Key features include a 0V to 3.05V output voltage sense range per phase, programmable switching frequency up to 1 MHz, integrated MOSFET drivers are absent (external drivers required), adaptive voltage positioning, dynamic phase shedding, and full PMBus 1.3 telemetry including VIN/VOUT/IIN/IOUT/PIN/POUT/TEMP. The device supports current mode control, per-phase current sensing, and overcurrent/overvoltage/undervoltage/over-temperature fault protection with black-box recording. The ISL68124 architecture pairs Intersil's proprietary digital control loop engine with on-chip non-volatile memory for configuration storage. This eliminates the analog compensation components typical of analog PWM controllers and provides a stable control loop across a wide operating range. The device interfaces with the host through PMBus (SMBus-compatible 2-wire) for telemetry polling and configuration writes, and provides GPIO pins for system-level signaling and fault response. Typical applications include server/datacenter core VR, telecom and networking ASIC power, high-current graphics and processor rails, FPGA core supplies, and modular POL converters for distributed architectures. The flexible 4-phase capability supports high-current rails such as 240 A+ loads using appropriate external MOSFETs and inductors. When designing with this part, choose external gate drivers sized for the load current and MOSFET family. PMBus programming requires a unique device address; refer to the manufacturer datasheet for SMBus addressing, pin strap configuration, and GUI setup. External current-sense resistors or inductor DCR sensing must be sized for the per-phase current target.
ISL68137IRAZ - Digital 7-Phase PWM Controller | Renesas
The Renesas ISL68137IRAZ is a digital dual-output, flexible multiphase (X+Y ≤ 7) PWM controller with an Adaptive Voltage Scaling Bus (AVSBus) interface, housed in a 48-lead 6x6 mm QFN package. It supports any phase assignment up to seven phases across two outputs, including 6+1, 5+2, 4+2, 3+3, 3+2, or single-output 7+0 configurations. The device integrates PMBus and AVSBus interfaces for digital telemetry and adaptive voltage scaling in server, telecom, and high-end computing rails. A digital multiphase PWM controller is a power-management IC that drives multiple buck-converter phases in parallel to deliver high currents (>100 A) with fast transient response, dynamic phase adding/dropping, and per-loop digital compensation. The ISL68137 belongs to the voltage regulator controller family, specifically the multiphase PWM controller category, sitting above power-stage DrMOS/MOSFETs and below the system PMBus master in the power tree hierarchy. Key features include on-chip nonvolatile memory for storing user-selected configuration via pin-strap, automatic phase add/drop for efficiency across load ranges, AVSBus adaptive voltage scaling, full PMBus 1.3.1 command set, and ±0.5% output voltage accuracy across line, load, and temperature. The -40C to +85C industrial operating range supports datacom, telecom, and high-performance computing platforms. Architecturally, the device pairs a digital core with mixed-signal PWM modulators and per-loop PID compensation, allowing firmware-free, pin-strap configuration while preserving digital telemetry and fault logging. The 6x6 mm QFN-48 footprint with exposed pad provides low thermal resistance for high-phase-count designs where controller dissipation matters. Typical applications include server core/CPU VRs, DDR memory VRs, GPU and ASIC rails, networking switch PCIe/SoC rails, and industrial high-current POL converters. In any rail where >80 A is needed with adaptive voltage scaling, the ISL68137 is a strong candidate. Designers should plan for 4-layer or higher PCB stack-ups with adequate via arrays under the exposed pad, a dedicated 3.3 V bias rail for VCC, and PMBus pull-ups per the SMBus specification. Verify phase-current-sense resistor selection before committing layout. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
ISL68137IRAZ-T - 7-Phase Dual-Output PWM Controller | Renesas
The Renesas Electronics ISL68137IRAZ-T is a digital dual-output PWM controller for configurable X+Y multiphase buck voltage regulators, supporting up to seven total phases and an Adaptive Voltage Scaling Bus interface in a 48-lead 6 x 6 mm QFN package. The ISL68137IRAZ base device operates from -40°C to +85°C and supports flexible phase assignments including 6+1, 5+2, 4+2, 3+3, 3+2, and 7+0 configurations. Its on-chip nonvolatile memory stores user-selectable configurations, while automatic phase add and drop improves efficiency across changing load conditions. A digital multiphase PWM controller coordinates multiple high-current gate drivers to produce a low-ripple, high-efficiency CPU or processor voltage-regulator module. Unlike a single-phase regulator, a multiphase architecture distributes power delivery across parallel power stages, reducing current stress and supporting flexible rail assignments when different subsystems require separate output voltages. The ISL68137 belongs to the power-management IC hierarchy and is used where sequencing, telemetry, and rapid load transitions matter more than the simplicity of a basic voltage regulator. Key verified attributes include dual outputs, a maximum seven-phase configuration, pin-strap-selectable setup stored in on-chip nonvolatile memory, automatic phase add and drop, an AVSBus interface, and a 48-lead QFN package. The -T ordering suffix denotes the 4,000-unit tape-and-reel option, while the manufacturer package designation is L48.6x6B. Its RoHS-compliant status is explicitly identified in the Renesas part-number table. The controller is intended for high-current computing platforms requiring configurable dual-rail or combined multiphase power delivery. Pin-strap configuration allows a board to select operating parameters without an external configuration sequence, while stored settings can support platform-specific deployments. Firmware and board designers must still validate timing, fault behavior, rail sequencing, and power-stage compatibility before production use. Typical uses include CPU voltage-regulator modules, accelerator rails, multi-output server or desktop power systems, and communication equipment requiring phase-count flexibility. The X+Y architecture can combine phases on one output or divide them across two outputs as power demands change. Automatic phase control can reduce active phase count during light loads, improving conversion efficiency. Layout is critical because the device coordinates high-current switching loops. Follow the manufacturer's recommended component placement and exposed-pad thermal layout exactly, keep power-stage drive traces short, and provide clean current and return paths. Validate AVSBus connectivity, nonvolatile settings, telemetry, fault shutdown, and each rail's startup sequence across worst-case load and temperature conditions. This page consolidates verified Renesas product information, distributor availability, pricing context, and design-focused guidance. Because no publicly verified pin-for-pin replacement was identified in the supplied cross-reference results, cross-package or merely functional controllers are not presented as drop-in alternatives.
ISL68222IRAZ - Digital 5-Phase PWM Controller | Renesas | POL/DDR
The Renesas ISL68222IRAZ is a digital dual-output, 5-phase PWM controller with PMBus v1.3/AVSBus interface, supporting X+Y ≤ 5 phase assignments in a 40-pin TQFN (5x5) package. It operates as a synchronous step-down buck controller for non-isolated point-of-load (POL) and DDR memory applications, with a proprietary synthetic current modulation scheme that delivers industry-best transient response and efficiency across the full load range. A buck (step-down) DC-DC controller is a power management IC that drives external MOSFETs to convert a higher DC input voltage to a lower regulated output voltage. Digital multiphase controllers like the ISL68222IRAZ add PMBus telemetry, adaptive dead-time control, diode emulation, and automatic phase add/drop for light-load efficiency. They sit in the power management hierarchy as follows: PMIC → DC-DC controller → multiphase buck controller → voltage regulator module (VRM) for CPU/GPU/DDR rails. Key features include: support for up to five phases across two outputs (e.g., 4+1, 3+2, 3+1, 2+1, or 5+0), per-phase cycle-by-cycle current limiting with adaptive overcurrent protection, differential remote voltage sensing, ±0.5% output voltage accuracy across line/load/temperature, configurable switching frequency, AVSBus and PMBus v1.3 compliance, and extensive fault logging via SMBus. Diode emulation and automatic phase add/drop optimize light-load efficiency, while the synthetic current modulation scheme minimizes output capacitor count. The ISL68222IRAZ uses a digital core with proprietary Renesas modulation firmware, replacing analog compensation networks with adaptive digital control. This simplifies loop compensation, enables configuration changes via PMBus instead of hardware rework, and provides oscilloscope-like telemetry of VIN/VOUT/IIN/IOUT/PIN/POUT/TEMP for advanced power-system health monitoring. The 40-pin 5x5 TQFN package exposes multiple PWM outputs, current-sense inputs, and the AVSBus/PMBus/SMBus serial interfaces. Typical applications include DDR5/DDR4 memory VRPM (voltage regulation with power management), server and datacentre CPU/SoC core rails, FPGA and ASIC POL supplies, telecom base-station point-of-load converters, and high-end graphics card power. The dual-output flexibility also supports designs that need one rail for VDDQ and another for VTT termination, with phase shedding across both rails for maximum light-load efficiency. When designing with the ISL68222IRAZ, use Renesas PowerNavigator software to configure the part over PMBus and tune the per-loop PID coefficients. Place the ISL68222IRAZ close to the driver/MOSFET power stage, keep the current-sense traces short and matched, and provide adequate copper pour for the 40-pin TQFN thermal pad (this is a controller, not a power dissipator, so thermal concerns are modest). This page synthesizes distributor pricing, real drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
ISL68222IRZ - Digital Dual 5-Phase PWM Controller | Renesas
The Renesas ISL68222IRZ is a digital dual-output multiphase PWM controller supporting X+Y ≤ 5 phase assignments in a 40-pin TQFN (5x5 mm) package. It operates from a 3.3 V supply, drives external MOSFETs to implement step-down (buck) rails, and supports both PMBus v1.3 and AVSBus digital interfaces for telemetry, margining, sequencing, and fault management. According to the Renesas ISL68222/ISL68233 datasheet, the controller accepts flexible phase configurations such as 1+1, 3+1, 3+2, 4+1, or 5+0, allowing a single IC to power one or two independent POL rails. A PWM controller (also called a voltage-mode or current-mode controller IC) is the brain of a switch-mode power supply. It does not contain the power FETs themselves; instead, it generates high-frequency gate-drive signals that switch external MOSFETs, which in turn chop the input voltage into a regulated output. Multiphase controllers interleave several smaller phases instead of using one large switching stage, reducing input/output ripple, spreading thermal dissipation, and improving transient response under dynamic loads. The ISL68222IRZ belongs to the hierarchy: PWM controller -> DC-DC controller -> power management IC -> semiconductor. Key features of the ISL68222IRZ include the proprietary Renesas digital synthetic current modulation scheme, diode emulation for light-load efficiency, automatic phase add/drop across the load range, and on-chip non-volatile configuration memory. The AVSBus interface (in addition to standard PMBus) provides a high-speed, low-pin-count sideband channel used on modern server motherboards for VR13/VR14 point-of-load negotiation. The 5x5 mm TQFN-40 footprint occupies roughly 25 mm² of board area, making it suitable for dense VR areas on server, networking, and telecom boards. Typical applications include server/core-voltage rails for Intel VR13 and AMD SVI3 processors, DDR memory VDDQ/VPP termination regulators, networking ASIC and FPGA core supplies, and high-current telecom point-of-load converters. The dual-output architecture is particularly valuable when one rail powers the SoC while the second rail powers the memory subsystem, eliminating a separate controller IC. In CPU core applications, the digital interface allows firmware to optimize compensation, switching frequency, and fault thresholds per platform. When designing with the ISL68222IRZ, follow Renesas reference design layouts for the 40-TQFN exposed pad, use the Renesas PowerNavigator GUI for in-system configuration, and respect the AVSBus pull-up and timing requirements to avoid communication failures during board bring-up. A dual-output 3+1+1 configuration is common in storage controllers and AI accelerator cards where multiple independent rails share the same controller silicon. This page synthesizes distributor pricing, drop-in alternatives, application notes, and design considerations for the ISL68222IRZ that are not available on a typical DigiKey or Mouser listing. Cross-brand and same-brand equivalents listed below were verified for QFN-40 footprint and PMBus compatibility.
ISL68233IRZ - Digital Dual-Output 5-Phase PWM Controller | Renesas
The Renesas ISL68233IRZ is a digital dual-output multiphase (X+Y ≤ 5) PWM controller supporting PMBus V1.3 and AVSBus interfaces, housed in a 40-lead 5x5 mm TQFN package. It can be configured to support any phase assignments up to a maximum of five phases across two outputs (X and Y), including 4+1, 3+2, 3+1, 1+1, or a single-output 5+0 configuration, with increased power density for non-isolated intermediate bus and POL applications. A digital PWM controller is a microprocessor-supervised power-stage manager that drives external MOSFETs and dynamically adjusts switching frequency, phase count, and output voltage via firmware-configurable parameters. The ISL68233 sits within the broader hierarchy of PMBus-managed voltage regulators, which sit under DC-DC controllers, which are a subset of power management ICs used in telecom, datacom, and computing infrastructure. Key features include PMBus V1.3 and AVSBus digital interfaces for telemetry, fault reporting, and dynamic voltage scaling; pin-strappable or pin-programmable configuration for boot settings; integrated MOSFET drivers for high-current output stages; and support for adaptive dead-time control and current sharing across phases. The 40-TQFN (5x5) package minimizes board footprint while providing the thermal headroom required for multiphase current delivery. The ISL68233 employs a peak-current-mode control architecture with cycle-by-cycle current balancing between phases, enabling tight load-line accuracy and fast transient response. The digital core implements Renesas's proprietary charge-mode control loop, which compensates automatically over wide operating-condition ranges and eliminates the need for manual loop-component selection. This makes the device well-suited for dense, high-current rails such as core VCORE rails for processors, ASICs, and DDR memory. Typical applications include POL converters for telecom and datacom infrastructure, DDR memory VTT/VPP rails, server core voltage regulation, ASIC/FPGA multi-rail power, and any high-current point-of-load system requiring digital telemetry and adaptive voltage scaling. The PMBus interface simplifies compliance with adaptive voltage positioning (AVP) schemes in modern processors. When designing with this device, carefully follow Renesas's recommended external MOSFET selection and PCB layout guidelines for the 5x5 TQFN. Adequate decoupling and a Kelvin-sense connection to the inductor DCR or current-sense resistor are critical for accurate current sharing. The PMBus address and boot configuration must be set through external resistors and stored in non-volatile memory prior to first power-up. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the ISL68233 family not found in the manufacturer datasheet alone.
ISL80030AFRZ-T - 3A Sync Buck Converter 2.7-5.5V 2MHz DFN-8 | Renesas
The Renesas ISL80030AFRZ-T is a 3 A continuous synchronous step-down DC/DC converter housed in an 8-pin 2 mm × 2 mm DFN package with exposed thermal pad. It operates from a 2.7 V to 5.5 V input supply and produces an adjustable output from 0.6 V up to the input rail, switching at a fixed 2 MHz to minimize external inductor and capacitor size. Peak current-mode control with internal compensation delivers fast transient response and stable loop behavior across the full 3 A load. The ISL80030AFRZ-T variant uses forced PWM across the full load range, while the ISL80031 family automatically drops into PFM at light load to maximize efficiency. Integrated low rDS(on) PMOS high-side and NMOS low-side MOSFETs eliminate the boot capacitor, reduce external parts count, and allow 100% duty-cycle operation for low-dropout applications. The exposed pad provides a low thermal resistance path to PCB copper. According to the manufacturer datasheet, the device operates over -40 °C to +125 °C junction temperature, suits portable, point-of-load, FPGA/SoC core-rail, and space-constrained consumer applications, and consumes only microamps of quiescent current in shutdown.
ISL8200MIRZ - 10A Current-Share DC/DC Power Module | Renesas
The Renesas ISL8200MIRZ is a complete, stand-alone 10A step-down DC/DC switching power module integrating the PWM controller, power MOSFETs, inductor, and passive components into a single QFN-style surface-mount package. It accepts a 4.5V to 20V input and delivers an adjustable output from 0.6V to 6V at up to 10A continuous load current, with patented current-share architecture that allows multiple modules to be paralleled for higher currents. **Background - What is a DC/DC Power Module?** A DC/DC power module is a complete switch-mode power supply (SMPS) miniaturized into a single IC-style package. Unlike a discrete buck converter, which requires the engineer to select and lay out external MOSFETs, an inductor, and compensation components, a power module embeds all these building blocks inside the device, leaving only input/output bulk capacitors and a feedback resistor divider external. Power modules belong to the broader category of point-of-load (PoL) converters, which sit on the PCB next to the load they power (FPGA core rail, ASIC, SoC). Within the SMPS family tree, a power module sits below the buck converter hierarchy: buck converter -> step-down regulator -> PoL converter -> power module -> integrated power management IC. **Key features** of the ISL8200MIRZ include 10A continuous output current, current-share pin for parallel operation up to 60A (six modules), internal 4.5V/20V MOSFETs, internal inductor, internal feedback compensation, adjustable soft-start, power-good indicator, and over-current/over-voltage/thermal protection. The high level of integration eliminates the design and manufacturing risks associated with discrete buck implementations. **Technical architecture**: The ISL8200MIRZ uses a voltage-mode PWM controller with internal loop compensation. The internal MOSFETs and inductor are co-packaged to minimize parasitic loop inductance, achieving high efficiency (typically >90% at 5V input to 3.3V output at moderate loads) and reduced EMI. The current-share bus allows multiple ISL8200M modules to operate in master-slave configuration with ±10% current matching. **Typical applications** include datacom/telecom equipment (48V-to-PoL), FPGA/ASIC core and auxiliary rails, servers and storage area networks, and industrial point-of-load regulation. Designers favor it where PCB real estate is constrained or where rapid time-to-market outweighs the per-ampere cost of a discrete design. **Design consideration**: Place input bulk capacitors within 5 mm of the module's VIN pins to minimize parasitic inductance, and use the exposed thermal pad for both thermal dissipation and the electrical ground return. The current-share pin must be tied together on all paralleled modules; floating it disables parallel operation. **Unique value**: This page combines distributor pricing, EOL/last-time-buy status, same-family pin-compatible alternatives, and practical parallel-operation notes - information not consolidated on the manufacturer datasheet or distributor product pages.
ISL8200MIRZ-T - 10A DC/DC Power Module, 4.5-20V Input | Renesas
The Renesas ISL8200MIRZ-T is a complete 10 A current-sharing DC/DC power module that integrates a synchronous buck controller, power MOSFETs, and passives into a single 15 mm x 15 mm surface-mount QFN package. Per the manufacturer datasheet, it accepts a 4.5 V to 20 V input range and supplies an adjustable 0.6 V to 6 V output at up to 10 A continuous load current, with parallel current-share capability extending to 60 A using multiple modules. The integrated 26.5 microohm/V high-side FET achieves peak efficiencies of approximately 95% at 12 V input to 3.3 V output at moderate loads. A DC/DC power module is a fully integrated point-of-load (PoL) switching regulator that places the controller, power stage, and most passive components inside one package. Compared with discrete buck regulator designs, modules simplify PCB layout, shrink the BOM, shorten time-to-market, and provide validated thermal performance with a defined exposed thermal pad. ISL8200MIRZ-T sits within the broader taxonomy of DC/DC switching converters > switching voltage regulators > power management ICs > semiconductors. Key features include 4.5 V to 20 V wide VIN range, 0.6 V to 6 V adjustable VOUT (single resistor-set), 10 A continuous output, current-share mode for parallel operation up to 60 A, internal soft-start, thermal protection, and a PGOOD indicator. Programmable switching frequency (200 kHz to 600 kHz) supports efficiency and component-size optimization per design target. The architecture is a voltage-mode synchronous buck converter with adaptive drivers and a current-share loop. The exposed-pad QFN package provides a thermal resistance around 17 C/W (per datasheet), supporting convection-cooled operation up to ~7 W dissipation on a 4-layer JEDEC JESD51 board. Internal compensation simplifies the external BOM to a few ceramic capacitors, a single VOUT setting resistor, and an enable pull-up. Typical applications include FPGA/CPLD core and I/O voltage rails, datacom and telecom PoL supplies, baseband and DSP power, high-current ASIC rails, and industrial controller 3.3 V/5 V/6 V rails. The current-share feature also makes the part suitable for compute boards that need 30 A or more with N+1 redundancy. When designing with the ISL8200MIRZ-T, place input/output ceramic capacitors close to the module's bond-pad islands and solder the exposed pad to at least 1 square inch of 2 oz copper to keep junction temperatures within the datasheet thermal envelope. Always validate ripple at the load using actual bulk capacitors, not the minimum values shown in the schematic. This page integrates distributor pricing, pin-compatible alternatives, application guidance, and design notes not provided on the manufacturer datasheet summary, giving engineers a single source for both sourcing and design decisions.
ISL8282MFRZ - 15A PMBus Step-Down Power Module | Renesas
The Renesas ISL8282MFRZ is a PMBus-enabled 15A hybrid digital step-down DC/DC power module with a 4.5V to 16.5V input voltage range, a 0.5V to 5V adjustable output range, and up to 95% conversion efficiency, housed in a compact HDA-83 (11x12 mm) power module package. A DC/DC step-down (buck) power module is a voltage regulator that integrates the controller, power MOSFETs, gate drivers, and inductor into a single packaged unit. Within the power management IC hierarchy, power modules sit above discrete controllers because they eliminate the most difficult part of buck converter design - power stage layout and magnetics selection - delivering a verified reference design in one solderable component. Key features include 15A continuous output current from a single channel, PMBus/SMBus digital control and telemetry for remote configuration and monitoring, proprietary Renesas R4 Technology control architecture for fast transient response, and integrated LDOs that supply clean internal bias rails and simplify external power tree design. The wide 0.5V to 5V output range covers core rails, I/O rails, and DDR memory VTT-adjacent supplies. Technically, the hybrid digital architecture combines the accuracy of a digital control loop with the power density of an integrated power stage, achieving up to 95% peak efficiency while minimizing the external component count. Digital telemetry enables output voltage, current, temperature, and fault-status readback over PMBus, supporting system health monitoring in server and networking platforms. Typical applications include data center server CPU and ASIC power, networking switch line cards, storage systems, and industrial baseboards where a compact, monitored 15A rail is required. The high power density suits space-constrained boards that would otherwise need multi-component discrete buck stages. Design consideration: verify thermal derating at full 15A load - power modules concentrate dissipation in one footprint, so PCB copper pour area and airflow per the manufacturer thermal application guidance are essential for reliable junction temperatures. This page synthesizes distributor availability data, PMBus feature analysis, and drop-in replacement guidance not found in the manufacturer datasheet.
ISL8282MFRZ-T - 15A PMBus Digital Step-Down Power Module | Renesas
The Renesas ISL8282MFRZ-T is a 15A high-efficiency hybrid digital step-down power module with PMBus interface, supporting a wide 4.5V to 16.5V input voltage range, an adjustable 0.5V to 5V output range, and up to 95% conversion efficiency in a compact board-mount LGA-style package. A digital step-down power module is a non-isolated point-of-load (PoL) DC/DC converter that integrates the power stage, controller, and compensation into a single surface-mount unit. Within the power-management hierarchy it sits above discrete controllers-plus-MOSFET solutions, belonging to the family of voltage regulators, specifically digital switching regulators, and is programmed and monitored over the industry-standard PMBus serial bus. Key features include single-channel 15A continuous output current, PMBus/SMBus telemetry for voltage, current, temperature and fault monitoring, and proprietary Renesas R4 Technology control architecture that enables fast transient response with high power density. Integrated LDOs supply the internal controller circuitry, reducing external component count and simplifying bill-of-materials. The module is optimized for high-density designs where board space and thermal performance are critical. Technically, the hybrid digital architecture combines a digital loop controller with an integrated power stage. The R4 Technology control loop provides fast, stable transient response without external compensation design, and digital telemetry enables real-time margining, sequencing, and fault management. Output voltage can be set through PMBus commands or external configuration, supporting flexible rail deployment across multiple designs. Typical applications include FPGA and ASIC core power rails in networking switches, storage and data-center equipment, industrial automation systems, and optical modules, where 15A continuous current at sub-5V rail voltages with PMBus manageability is required. A key design consideration is thermal management: at 15A and low output voltages, conduction losses dominate, so adequate PCB copper area and airflow must be provided, and input/output capacitor selection should follow the manufacturer datasheet recommendations to maintain stability. This page synthesizes distributor availability data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with pricing referenced as of 2026-10-19.
ISL8282MFRZ-T1 - 15A PMBus Step-Down Power Module | Renesas
The Renesas ISL8282MFRZ-T1 is a PMBus-enabled, single-channel hybrid digital step-down DC/DC power module delivering up to 15A of continuous output current from a 4.5V to 16.5V input rail, with an adjustable output range of 0.5V to 5V, packaged in a thermally enhanced 12 mm x 11 mm x 5.3 mm fully encapsulated HDA-83 module. A point-of-load (PoL) DC/DC power module is a device that integrates a switching regulator controller, power MOSFETs, inductor, and most passive components into a single encapsulated package. Within the power management hierarchy, it sits above discrete converters and below complete power supplies, dramatically reducing external component count, design complexity, and board area while guaranteeing optimized internal layout for switching performance. Key features of the ISL8282M include up to 95% peak conversion efficiency, digital PMBus/SMBus control and telemetry for output voltage adjustment, sequencing, margining, and monitoring, plus integrated LDOs that power internal circuitry. The proprietary Renesas R4 Technology control architecture provides fast transient response and stable operation across the full 0.5V to 5V output range. Technically, the hybrid digital architecture combines a digital control loop with integrated power stage magnetics in the HDA package, achieving high power density suitable for space-constrained boards. Fully encapsulated construction protects against moisture and mechanical stress, and the thermally enhanced substrate conducts heat to the PCB for convection cooling without a heatsink at moderate loads. Typical applications include FPGA and ASIC core power rails in networking switches, data-center and server line cards, industrial automation controllers, and wireless infrastructure equipment where digital power telemetry via PMBus is required. For design, ensure adequate copper area under the module thermal pad to keep junction temperature within limits at high load, and follow the datasheet-recommended external capacitor values for input and output stability. This page synthesizes distributor pricing, verified alternatives, and practical design guidance not found in the manufacturer datasheet alone.
ISL854102FRZ-T - 40V 1.2A Sync Buck Regulator | Renesas
The Renesas ISL854102FRZ-T is a wide-input 1.2 A synchronous buck (step-down) DC/DC regulator housed in a 12-pin DFN-12 EP (4x3 mm) package with exposed thermal pad. It accepts a 3 V to 40 V input range, integrates both high-side and low-side NMOS FETs, and supports an adjustable output from 0.6 V up to 34 V. Default switching frequency is 500 kHz, programmable from 300 kHz to 2 MHz via an external resistor. The regulator provides a low-BOM-count, easy-to-use solution for distributed 24 V industrial buses, 12 V/24 V automotive, and general-purpose point-of-load conversion. A synchronous buck regulator (also called a step-down switching converter) is a type of DC-DC converter that uses pulse-width modulation with an integrated or external MOSFET pair to reduce a higher DC input voltage to a lower, regulated DC output voltage. Buck regulators sit inside the broader power management IC (PMIC) hierarchy: switching regulator -> DC-DC converter -> power management IC -> semiconductor. Synchronous variants replace the external Schottky diode with a low-side MOSFET, improving efficiency (typically 90 % to 95 %) and reducing conduction loss compared with asynchronous buck designs. Key features of the ISL854102FRZ-T include internal compensation that eliminates external loop components, PFM mode for improved light-load efficiency, a forced-PWM option for noise-sensitive applications, internal/external soft-start control, and a PGOOD (power-good) output. Protection features include overcurrent protection (OCP), overvoltage protection (OVP), undervoltage lockout (UVLO), and thermal shutdown. The wide 40 V input tolerance makes the part robust against load-dump transients common on 12 V/24 V automotive rails. The ISL854102 uses peak-current-mode control with a fixed internal compensation network, simplifying design-in and reducing external component count to typically one inductor, input/output capacitors, and feedback resistors. The adjustable frequency (300 kHz to 2 MHz) allows designers to trade efficiency against solution size or to avoid AM-band interference. Typical applications include industrial 24 V distributed power systems, 12 V/24 V automotive electronics, telecom point-of-load rails, general-purpose 5 V/3.3 V/1.8 V/1.0 V conversion, battery-powered equipment, and FPGA/MCU supply rails. The combination of 40 V input tolerance, 1.2 A output current, and a small DFN-12 EP footprint makes it particularly attractive for compact industrial designs where space is at a premium. When designing with this device, derate output current versus ambient temperature using the package's thermal resistance; pair the exposed pad with sufficient PCB copper (at least 1 square inch top-side copper). For noise-sensitive loads, disable PFM mode by tying the MODE pin to VIN to force continuous PWM operation. Ensure that the feedback divider uses 1 % resistors and that input capacitance is rated for the full 40 V stress with adequate ripple-current rating. This page synthesizes distributor pricing (DigiKey, Mouser, LCSC, Octopart as of 2026-10-05), drop-in alternatives drawn from same-package same-family Renesas parts, and practical design notes not found in the manufacturer datasheet.
ISL9103AIRUCZ-T - 500mA 2.4MHz Sync Buck 1.8V Fixed | Renesas
The Renesas ISL9103AIRUCZ-T is a 500 mA synchronous step-down (buck) DC/DC converter switching at 2.4 MHz, with a fixed 1.8 V output, supplied from a 2.7 V to 6 V input rail. Housed in a 6-pin UTDFN (UFDFN) 1.6 x 1.6 mm package, it integrates a pair of low-on-resistance P-channel and N-channel MOSFETs to maximize efficiency and minimize external component count, delivering less than 300 mV dropout at 500 mA through 100% duty-cycle operation. A buck switching regulator (also called a step-down converter) is a switch-mode power supply topology that converts a higher DC input voltage into a lower DC output voltage by periodically switching an inductor and rectifying the resulting waveform. Buck regulators occupy the power management IC category alongside LDOs, boost converters, and charge pumps, and are preferred over LDOs whenever input-to-output voltage differential is large because they can exceed 90% efficiency. The ISL9103A family targets low-power point-of-load rails in portable, battery-powered devices where board space is at a premium. Key features include a typical quiescent current that supports long battery standby, 2.4 MHz PWM switching that enables a sub-1 mm profile inductor, internal synchronous rectification that eliminates the external Schottky diode, and built-in protection including overcurrent, thermal shutdown, and soft-start. The 6-pin UTDFN occupies only 1.6 x 1.6 mm of board area, making it suitable for sub-30 mm square power sections in wearables, handsets, and IoT endpoints. The device uses a peak-current-mode PWM control architecture with internal compensation, simplifying external design and providing predictable small-signal response across line and load variation. Internal MOSFETs and synchronous rectification eliminate the need for an external Schottky, while 100% duty cycle extends usable input range when the battery droops toward the output setpoint. Typical applications include powering low-voltage microprocessors in PDAs and cellular phones, single-cell Li+ battery rails in portable media players, and as a post-DCDC point-of-load regulator for application processors in handheld products. A key design consideration is the 2.4 MHz switching frequency: the inductor can be small (typically 1.0 to 2.2 uH), but PCB layout must minimize the input/output loop area to limit radiated EMI from the switching node. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
ISL91117IIAZ-T - 4.2A Sync Boost Converter WLCSP-20 | Renesas
The Renesas ISL91117IIAZ-T is a highly-integrated synchronous boost switching regulator delivering up to 4.2A switch current in a 20-ball WLCSP package for battery-powered applications. It accepts input voltages from 1.8V to 4.8V (single-cell Li-ion/Li-polymer or 2-3 cell alkaline/NiMH/NiCd), produces an adjustable output from 0.8V up to the input range and supports 1.5A output at PVIN=3.3V to VOUT=5V. The synchronous rectifier topology and integrated output disconnect maximize efficiency while eliminating external Schottky diode cost. A synchronous boost converter is a switch-mode DC-DC converter that steps the input voltage up to a higher regulated output using an internal high-side MOSFET, an inductor, and a synchronous low-side MOSFET replacing the traditional diode. Within the broader power-management IC hierarchy, the boost converter belongs to step-up switching regulators, which sit alongside buck (step-down), buck-boost, and SEPIC converters. This category trades efficiency against the linear regulator's noise performance: switching converters achieve 90-95% efficiency versus 30-60% for low-dropout (LDO) regulators at large VIN/VOUT deltas, but inject ripple into the output that requires LC filtering. The ISL91117 family targets portable, single-cell Li-ion systems where battery life depends on minimizing quiescent current and maximizing converter efficiency. The ISL91117IIAZ-T integrates two 4.2A N-channel MOSFETs in a synchronous configuration, supports output disconnect (true shutdown), and operates at a fixed switching frequency optimized for small external components. Internal compensation eliminates the need for external compensation networks. The 20-ball WLCSP occupies approximately 2.015 mm x 1.555 mm of board area, enabling ultra-compact portable designs. Protection features include overcurrent protection, over-temperature shutdown, and undervoltage lockout. The wide input range supports direct connection to single-cell Li-ion batteries without front-end regulation. Typical applications include boosting a single-cell Li-ion battery (3.0-4.2V) to 5V USB-OTG rails in smartphones, powering 3.3V subsystems from 1.8V rails in wearable devices, and generating 5V supplies from dual-cell alkaline stacks in portable medical and industrial handheld instruments. The 4.2A switch rating also supports LED flash drivers, audio amplifiers, and other high-current loads requiring voltages above the battery. When designing with the ISL91117IIAZ-T, the critical trade-off is efficiency versus noise: a switching regulator always adds ripple versus an LDO, so for noise-sensitive analog rails downstream LDO post-regulation may still be required. Use the smallest ceramic capacitors that meet the datasheet ESR/ESL guidance to minimize solution size and cost. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the Renesas datasheet, providing engineering context for selecting the ISL91117IIAZ-T versus competing boost converters.
ISL91117IIAZ-T7A - 3.7A Sync Boost Converter, 1.8-4.8V | Renesas
The Renesas ISL91117IIAZ-T7A is a high-efficiency synchronous boost (step-up) switching regulator IC delivering up to 3.7A of switch current from a 1.8V to 4.8V battery input, housed in a 20-bump 2.015mm x 1.6mm WLCSP package. It provides an adjustable output from 0.8V up, supports 1.5A output current at PVIN=3.3V, VOUT=5V, and integrates both the synchronous power MOSFETs and the output disconnect switch to prevent reverse conduction into the battery source. A boost converter (step-up DC-DC switching regulator) accepts an input voltage lower than the desired output voltage and uses a switching inductor, peak-current-mode controller, and synchronous rectifier to efficiently generate higher output voltages. Boost regulators sit within the broader hierarchy of switching regulators -> DC-DC converters -> power management ICs -> power management semiconductors. They are essential when downstream analog, RF, or MCU rails require 3.3V, 5V, or higher from a single-cell Li-ion/alkaline source. Key features include 95% peak efficiency, internal 4.2A low-Rdson MOSFET switches, output disconnect during shutdown, programmable PFM/PWM operation for light-load efficiency, and an operating junction temperature range of -40C to +85C. The wide VIN range supports dual/triple-cell alkaline, NiCd/NiMH, and single-cell Li-ion/Li-polymer battery packs. The ISL91117IIAZ-T7A uses a peak-current-mode architecture with internal compensation and synchronous rectification to maximize efficiency across the entire load range. The output disconnect MOSFET eliminates leakage paths in shutdown, allowing true output isolation - critical for USB-OTG and battery-powered designs where back-feeding the battery would damage cells or waste energy. Typical applications include single-cell Li-ion powered portable electronics (smartphones, wearables, Bluetooth headsets, e-readers, tablets, point-of-sale terminals, GPS receivers, medical handheld devices), USB-OTG 5V boost supplies from a 3.0-4.2V Li-ion source, and any 2-cell-to-5V boost conversion where PCB area and efficiency both matter. When designing with this part, place input/output ceramic capacitors as close as possible to the IC bumps, use a 1.0uH to 4.7uH shielded inductor with low DCR, and ensure the feedback divider uses 1% resistors. Thermal management is easier than linear regulators - switching losses dominate, but at 95% efficiency dissipation stays low. This page synthesizes distributor pricing, drop-in alternatives in the same WLCSP-20 footprint, and practical design notes that go beyond the manufacturer datasheet - useful for engineers selecting parts during BOM review and second-source qualification.
ISL95833HRTZ - IMVP-7/VR12 Dual 2+1 PWM Controller | Renesas
The Renesas ISL95833HRTZ is a dual 2+1 PWM controller IC designed for IMVP-7/VR12 compliant microprocessor and graphics processor core voltage regulators, integrating two voltage regulator control loops plus one integrated driver in a 32-pin QFN-EP (4x4 mm) package. The device delivers a programmable output range of 0.25 V to 1.52 V supporting up to 60 A and uses Intersil's proprietary Robust Ripple Regulator (R3) modulation technology to deliver superior transient response and DC accuracy. An IMVP-7/VR12 PWM controller is a multiphase buck-control IC that converts a higher DC bus voltage (typically 19 V from an adapter or 12 V from a battery) into the sub-1.5 V core rail demanded by modern Intel CPUs. The ISL95833 sits in the broader hierarchy of multiphase controllers -> DC-DC controllers -> voltage regulators -> power management ICs -> semiconductors. Compared with simpler voltage-mode or single-phase controllers, R3-based multiphase devices trade higher pin/packaging complexity for vastly improved load-step response, lower ripple at the load, and the ability to scale current by adding phases. Key features include 2+1 phase architecture (one VR for V_CORE with integrated 2-phase driver, plus a second VR for graphics/system agent), ±0.5 % system accuracy, automatic phase shedding at light load, and full IMVP-7/VR12 protocol compliance including PVID, SVID, and power-state transition support. The on-chip high-side and low-side gate drivers reduce external MOSFET count, while differential voltage sensing and per-phase current balancing improve regulation accuracy under dynamic loads. The architecture combines a high-bandwidth error amplifier, a precision internal reference, programmable dead-time control, and per-phase current sharing. The 32-pin QFN exposed-pad package provides a low thermal resistance path (theta_JA approximately 36 C) for thermal management of the integrated drivers, and an I2C/SMBus interface enables telemetry, fault logging, and configuration. Typical applications include IMVP-7/VR12 notebook CPU core rails, ultrabook and Ultrabook-class platforms, gaming laptop GPU rails, and embedded computing modules with VR12-compatible processors. The wide input range (typically 4.5 V to 25 V) supports 2-cell/3-cell Li-ion battery systems plus adapter boosting, and the integrated driver topology is favored where PCB area is constrained and BOM count must be minimized. When designing with the ISL95833HRTZ, place the input sense resistor and phase inductors within 10 mm of the controller to minimize parasitic ESL, and connect the exposed pad to a continuous ground copper pour for thermal dissipation. Verify the IMVP-7/VR12 protocol timing budget against your platform's VR12.5 extension requirements, since the ISL95833 does not natively support VR12.5/VR13 voltages above 1.52 V. This page synthesizes distributor pricing, application-specific design notes, and drop-in compatibility data sourced from the manufacturer datasheet and authorized distributors - information not consolidated on any single distributor product page.
ISL95833HRTZ-T - Dual 2+1 PWM Controller IMVP-7/VR12 | Renesas
The Renesas ISL95833HRTZ-T is a dual 2+1 pulse-width modulation (PWM) controller designed for IMVP-7/VR12 compliant microprocessor and graphics-processor core voltage regulators, housed in a 32-pin QFN-EP (4x4 mm) package. It integrates two voltage regulators with output capability up to 60 A and an output voltage range of 0.25 V to 1.52 V, suiting it for high-current CPU Vcore and GPU core power rails in notebook platforms. The first VR (typically Vcore) incorporates 1 integrated driver and can operate in 2- or 1-phase configurations, while the second VR handles graphics-processor or system-agent power. A PWM controller is a switch-mode power-supply control IC that regulates an output voltage by varying the duty cycle of a switching stage. IMVP-7 (Intel Mobile Voltage Positioning) and VR12 are Intel-defined voltage-regulator specifications that combine a multi-phase buck topology, dynamic VID, current balancing, and protection telemetry to power modern x86 processors. The ISL95833 sits between the IMVP-7/VR12 controller hierarchy and the discrete power stage, providing the analog control loops and digital telemetry that the CPU expects. Key features of the ISL95833HRTZ-T include dual independent current-mode PWM modulators, integrated MOSFET drivers, differential voltage error amplifier, programmable dynamic VID, droop and offset compensation, per-phase current balance, and comprehensive protection (OVP, UVP, OCP, OTP). The current-mode architecture provides line-transient rejection and per-cycle current limiting, while the integrated driver eliminates external gate-driver ICs for Vcore, reducing BOM and PCB area in thin notebook designs. Typical applications include Intel IMVP-7/VR12 notebook Vcore rails, integrated graphics (iGPU) regulators, system-agent rails, and embedded computing platforms requiring IMVP-7-compliant multiphase buck control. The 32-pin QFN-EP package exposes a thermal pad for direct copper heatsinking to keep junction temperatures within limits under sustained 60 A output conditions. When designing with this controller, follow the datasheet IMVP-7/VR12 reference schematic, including the recommended inductor, MOSFET pair, and sense-resistor selection to meet Intel transient and DC tolerance windows.