ISL95833HRTZ-T - Dual 2+1 PWM Controller IMVP-7/VR12 | Renesas
MPN: ISL95833HRTZ-T ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.85 | $3.85 |
| 10 | $3.45 | $34.50 |
| 100 | $2.95 | $295.00 |
| 500 | $2.55 | $1,275.00 |
| 1,000 | $2.18 | $2,180.00 |
ISL95833HRTZ-T Overview
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.
Drop-in alternatives for ISL95833HRTZ-T — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ISL95833HRTZ-T (same form factor and footprint) — differing in Maximum Output Current, Number of Outputs, Package, Topology.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ISL95833HRTZ
✅ Drop-In✓ In Stock
$1.74 / Unit
View Datasheet →ISL95833IRTZ
✅ Drop-In📋 Reference alternative (not in catalog)
ISL95833HRTZ-T7A
✅ Drop-In📋 Reference alternative (not in catalog)
ISL95833HRTZ-T Maximum Ratings & Electrical Characteristics
| Topology | Dual 2+1 PWM Controller (Multiphase Buck) |
| CPU Compatibility | IMVP-7 / VR12 Compliant |
| Output Voltage Range | 0.25 V to 1.52 V |
| Maximum Output Current | 60 A |
| Number of Outputs | 2 (Vcore + Graphics/GFX) |
| Vcore Phases | 2 or 1 phase (selectable) |
| Graphics Phases | 1 phase |
| Integrated Driver | Yes (1 integrated gate driver per Vcore phase) |
| Control Method | Current Mode PWM |
| Package | 32-pin QFN-EP (4x4 mm) with thermal pad |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead Free | Yes |
ISL95833HRTZ-T Pin Configuration
| Pin 1 | VIN — Input voltage supply |
| Pin 2 | VCC — Internal analog supply |
| Pin 3 | UGATE1 — High-side gate drive output, phase 1 |
| Pin 4 | PHASE1 — Phase node return, phase 1 |
| Pin 5 | LGATE1 — Low-side gate drive output, phase 1 |
| Pin 6 | BOOT1 — Bootstrap supply, phase 1 |
| Pin 7 | GND — Ground return |
| Pin 8 | UGATE2 — High-side gate drive output, phase 2 |
| Pin 9 | PHASE2 — Phase node return, phase 2 |
| Pin 10 | LGATE2 — Low-side gate drive output, phase 2 |
| Pin 11 | BOOT2 — Bootstrap supply, phase 2 |
| Pin 12 | VSEN1 — Vcore differential remote sense + |
| Pin 13 | RTN1 — Vcore differential remote sense - |
| Pin 14 | DROOP1 — Vcore load-line (droop) programming |
| Pin 15 | FB1 — Vcore voltage error amplifier input |
| Pin 16 | COMP1 — Vcore compensation node |
| Pin 17 | ISEN1 — Vcore current sense input |
| Pin 18 | VSEN2 — Graphics differential remote sense + |
| Pin 19 | RTN2 — Graphics differential remote sense - |
| Pin 20 | FB2 — Graphics voltage error amplifier input |
| Pin 21 | COMP2 — Graphics compensation node |
| Pin 22 | ISEN2 — Graphics current sense input |
| Pin 23 | VID — VID input from CPU |
| Pin 24 | VR_HOT — Thermal hot indicator output |
| Pin 25 | PGOOD1 — Vcore power-good indicator |
| Pin 26 | PGOOD2 — Graphics power-good indicator |
| Pin 27 | EN1 — Vcore enable input |
| Pin 28 | EN2 — Graphics enable input |
| Pin 29 | RT — PWM frequency programming resistor |
| Pin 30 | SS — Soft-start programming |
| Pin 31 | OCP — Over-current protection programming |
| Pin 32 | NC — Not connected (per datasheet) |
Typical Applications
ISL95833HRTZ-T is suitable for 6 applications: Notebook CPU Vcore Rail (IMVP-7/VR12), Integrated Graphics (iGPU) Core Rail, System Agent / Chipset Rail, Ultrabook / Thin Notebook Power Management, Embedded / Industrial x86 Compute Module, Gaming Notebook / High-TDP Mobile Workstation.
Notebook CPU Vcore Rail (IMVP-7/VR12)
The ISL95833HRTZ-T is purpose-built for the Intel IMVP-7/VR12 Vcore rail in mainstream notebook designs, where it regulates the processor's core voltage from a 12 V or 19 V battery/adapter input down to 0.25 V to 1.52 V. Its dual 2+1 architecture with 1 integrated driver per Vcore phase eliminates external gate-driver ICs, reducing BOM count and PCB area in ultrabook-class platforms. The 2- or 1-phase Vcore configurability lets designers trade efficiency versus cost depending on CPU TDP class. The 60 A combined current capability covers mainstream dual-core and quad-core mobile CPU transients, and the integrated differential remote sense ensures accurate regulation at the CPU socket under high di/dt load steps typical of IMVP-7 turbo-mode operation.
Recommended
Integrated Graphics (iGPU) Core Rail
The second VR in the ISL95833HRTZ-T drives the platform's integrated graphics processor (iGPU) core rail, providing a tightly regulated voltage from 0.25 V to 1.52 V at currents typical of integrated GPU workloads. Independent VID, soft-start, and protection blocks let the iGPU rail power up and power down independently of the Vcore rail, which is required for IMVP-7 S0ix low-power state sequencing. The current-mode control architecture delivers fast transient response to GPU burst loads, and per-cycle current limiting protects the external inductor and MOSFETs from saturation during peak rendering workloads. Designers can reuse the same output filter design guidelines from the datasheet to streamline the iGPU rail implementation.
Recommended
System Agent / Chipset Rail
The ISL95833HRTZ-T's second VR can alternatively power the system agent (uncore/chipset) rail in thin-and-light notebook designs, where it supplies the platform controller hub and memory interface circuitry. The 60 A combined output budget and 0.25 V to 1.52 V output range cover most uncore voltage points used by mobile Intel chipsets. Sharing the same controller as Vcore simplifies the IMVP-7 power-tree design, reduces validation time, and lets the system agent ride the same VID transitions. The integrated OVP/UVP/OCP/OTP protection blocks also cover system-agent fault scenarios, which is critical for safety in production notebook designs.
Recommended
Ultrabook / Thin Notebook Power Management
The 32-pin QFN-EP (4x4 mm) package and integrated gate driver make the ISL95833HRTZ-T an excellent fit for ultrabook-class platforms where PCB area is constrained to under 30 square centimeters. By integrating the gate driver and current-sense amplifier, the controller eliminates 4 to 6 external ICs that a discrete multiphase controller would require, freeing layout space for the M.2 SSD, Wi-Fi module, and battery management circuitry. The exposed thermal pad enables direct copper heatsinking for sustained 60 A operation without dedicated heatsinks. The datasheet reference design targets 19 V adapter input with a 2-phase Vcore and 1-phase graphics rail.
Recommended
Embedded / Industrial x86 Compute Module
The ISL95833HRTZ-T also fits industrial x86 compute modules that need IMVP-7/VR12-compliant core regulation in a compact footprint, such as fanless embedded PCs, panel PCs, and edge-computing appliances. Industrial temperature variants exist within the same ISL95833 family (e.g. ISL95833IRTZ) that share the 32-pin QFN-EP footprint, enabling one PCB layout to serve both commercial and industrial SKUs. The controller's comprehensive telemetry (current, voltage, temperature) supports PMBus-style health monitoring required by industrial fleet management. Note that the ISL95833HRTZ-T itself is commercial-temperature grade - select the IRTZ variant for industrial temperature range.
Recommended
Gaming Notebook / High-TDP Mobile Workstation
Gaming notebooks and mobile workstations with high-TDP CPUs can use the ISL95833HRTZ-T's 60 A combined output to deliver sustained peak current to the processor during long-duration gaming and rendering workloads. The 2-phase Vcore configuration spreads thermal dissipation across two inductors and MOSFET pairs, keeping junction temperatures manageable in confined chassis. The current-mode control and per-phase current balance minimize thermal hot spots, while the differential remote sense maintains accuracy at the CPU socket across the full load range. The exposed thermal pad on the QFN-EP package also helps dissipate the controller's own dissipation when driving large external MOSFET gates.
Recommended
Recommended Products Summary
Engineering reference data for ISL95833HRTZ-T — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ISL95833HRTZ | ISL95833IRTZ | ISL95833HRTZ-T7A |
|---|---|---|---|---|
| Brand | Renesas | Renesas | Renesas | Renesas |
| Package | 32-pin QFN-EP (4x4 mm) | 32-pin QFN-EP (4x4 mm) - same | 32-pin QFN-EP (4x4 mm) - same | 32-pin QFN-EP (4x4 mm) - same |
| CPU Compatibility | IMVP-7 / VR12 | IMVP-7 / VR12 | IMVP-7 / VR12 | IMVP-7 / VR12 |
| Output Voltage Range | 0.25 V to 1.52 V | 0.25 V to 1.52 V | 0.25 V to 1.52 V | 0.25 V to 1.52 V |
| Maximum Output Current | 60 A | 60 A | 60 A | 60 A |
| Packaging Carrier | Tape & Reel | Tube | Tape & Reel | Tape & Reel (7-inch) |
| Temperature Grade | Commercial | Commercial | Industrial | Commercial |
| Integrated Driver | Yes (1 per Vcore phase) | Yes (1 per Vcore phase) | Yes (1 per Vcore phase) | Yes (1 per Vcore phase) |
| Number of VRs | 2 (Vcore + Graphics) | 2 (Vcore + Graphics) | 2 (Vcore + Graphics) | 2 (Vcore + Graphics) |
Key Differentiators
- Integrated gate driver reduces BOM and PCB area (vs Discrete multiphase controllers without integrated drivers)
- Dual 2+1 architecture in single IC (vs Separate Vcore and Graphics controllers)
- IMVP-7/VR12 compliance with full Intel telemetry (vs Generic multiphase controllers)
Design Notes
The 32-pin QFN-EP exposed thermal pad MUST be soldered to a top-layer copper pour of at least 100 mm^2 to keep the controller junction temperature within limits when the part is delivering sustained 60 A output. Without adequate copper, the internal gate driver dissipation (estimated at 0.5-1.0 W at high switching frequency) can drive the controller into thermal shutdown. Place thermal vias (0.3 mm drill, 1.0 mm pitch) in the exposed pad to inner-layer copper for additional heatsinking.
Estimated: at 60 A output and 300 kHz switching frequency, the controller drives external power-MOSFET gates with peak currents around 2 A per phase. Keep gate-drive traces (UGATE, LGATE, BOOT, PHASE) shorter than 10 mm and at least 0.3 mm wide to limit parasitic inductance that can cause ringing and shoot-through. Place the boot capacitor directly between BOOT and PHASE pins with minimal loop area. Use a 4-layer PCB with a continuous ground plane for noise-sensitive IMVP-7 platforms.
Route the differential remote-sense traces (VSEN/RTN) as a matched-length pair directly to the CPU socket sense pins. Keep these traces away from switching nodes (PHASE, UGATE, LGATE) and use ground-guard traces on both sides for noise immunity. The current-sense inputs (ISEN1, ISEN2) should connect to the inductor DCR sense network or shunt with Kelvin connections. Place the RT (frequency programming) resistor close to pin 29 with a clean ground return to minimize jitter.
Do not operate the ISL95833HRTZ-T without the exposed thermal pad soldered to copper - thermal shutdown will trigger under sustained load. Ensure the IMVP-7/VR12 VID table configured by the CPU matches the controller's expected encoding; mismatched VID codes can cause output over-voltage and trigger OVP. The boot capacitors must be rated for at least 25 V to handle the high-side gate-drive voltage transients. Verify the OCP programming resistor matches the inductor saturation current, not the DC current rating.
Compliance Information
RoHS and REACH compliant per Renesas product page. Commercial temperature grade - select ISL95833IRTZ for industrial temperature range. AEC-Q100 not applicable (consumer notebook platform).
