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TPS23757PWR - PoE+ PD Controller w/ DC-DC, 20-TSSOP | TI
The Texas Instruments TPS23757PWR is a combined Power over Ethernet (PoE) powered device (PD) interface and current-mode DC/DC controller optimized for isolated flyback and forward converters, housed in a 20-pin TSSOP (PW) package. It supports the IEEE 802.3at standard for a Type 1 PD delivering up to 13W, while also providing input voltage ORing between the PoE rail and an auxiliary adapter supply of 12V to 57V. What is a PoE Powered Device (PD) controller? A PoE PD controller is the integrated circuit on the device side of an Ethernet cable that negotiates the power contract with the Power Sourcing Equipment (PSE), performs detection, classification, inrush control, and hot-swap functions, and then provides a regulated bulk rail for downstream DC/DC conversion. The TPS23757 combines that front-end PD interface with a current-mode PWM controller, placing both functions in a single chip so the PD only needs the TPS23757, an external power MOSFET, a transformer, and a few passive components to build an isolated PoE power supply. Key features include 100V-rated hot-swap FET driver for PD pass-through switching, IEEE 802.3at hardware classification with two-event classification signaling support, programmable inrush current limiting, and a wide auxiliary adapter ORing range from 12V to 57V. The integrated DC/DC controller uses peak-current-mode control with programmable slope compensation, supporting both primary-side regulated flyback topologies and forward converters with a single output. The TPS23757's 100V absolute-maximum input rating exceeds the 802.3at transient tolerance requirement of 100V for 50µs, providing robust line-side protection. Adaptive gate drive and soft-start features minimize inrush stress on the bulk capacitor, while undervoltage lockout and thermal shutdown protect against fault conditions. The TSSOP-20 package with PowerPAD thermal pad offers a thermal resistance of approximately 35 C/W, enabling operation at full PD load without external heatsinking. Typical applications include IEEE 802.3at Type 1 powered devices such as IP phones, wireless access points, security cameras, IoT gateways, and small-form-factor PoE+ powered equipment. The 13W power level covers a wide range of enterprise networking endpoints. A key design consideration is the auxiliary adapter ORing: when both PoE and adapter are present, the TPS23757 selects the higher voltage rail and uses the adapter as a seamless backup, useful for installations where wall power is preferred but PoE failover is required. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that go beyond what the manufacturer datasheet alone provides.
TPS23758RJJR - IEEE 802.3at PoE PD Flyback Controller | TI
The Texas Instruments TPS23758RJJR is an IEEE 802.3at Power over Ethernet (PoE) powered-device (PD) controller with an integrated 150-V power FET and a current-mode, no-opto synchronous flyback DC-DC controller, housed in a 24-pin VSON (6 mm x 4 mm) surface-mount package. It supports 802.3at Type 1 power levels up to 13 W from the PoE link. A PoE PD interface is the circuit that negotiates and extracts power from Ethernet cabling per IEEE 802.3at, sitting within the hierarchy of power management ICs (PoE controller -> power interface -> power management IC -> semiconductor). It performs detection, classification, inrush control, and load switching for devices powered over the data cable, such as IP cameras and wireless access points. Key differentiating features include high integration: the TPS23758 combines the PD interface, a 150-V switching power FET, and the DC-DC controller in one die set, reducing external component count. Primary-side regulation (PSR) eliminates the optocoupler and secondary-side feedback network, while spread spectrum frequency dithering (SSFD) reduces EMI peak emissions. Advanced startup supports efficient boot sequencing from the PoE input. Technically, the device operates as a current-mode flyback controller optimized for isolated or non-isolated PoE conversion topologies. The no-opto sync architecture uses transformer auxiliary-winding sensing for output regulation, improving reliability and shrinking the solution footprint compared with conventional optocoupler flybacks. The integrated 150-V FET withstands PoE input transients common on long cable runs. Typical applications include IEEE 802.3at Type 1 (13 W) IP network cameras, wireless access points, VoIP phones, and other size-constrained PoE-powered endpoints where board space and EMI compliance are critical constraints. A key design consideration is transformer selection: the no-opto PSR scheme depends on accurate auxiliary-winding design, and TI recommends following the TPS23758EVM-080 reference design transformer specification for Type 1 applications. This page synthesizes distributor inventory data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TPS23758RJJT - 802.3at PoE PD with Flyback Controller | TI
The Texas Instruments TPS23758RJJT is an IEEE 802.3at Power over Ethernet (PoE) powered device (PD) controller that integrates a 150-V switching power FET and a current-mode no-opto synchronous flyback DC-DC controller in a 24-pin VSON (6x4 mm) exposed-pad package. A PoE PD interface and controller is a power management IC that performs the powered-device detection, classification, and inrush-current limiting required by IEEE 802.3at, then provides the front-end power conversion for extracting DC power from Ethernet cabling. In the system hierarchy it sits at the entry point of the power path: Ethernet cable -> PD interface -> flyback converter -> isolated DC rails. Key features include the integrated 150-V power MOSFET, which eliminates an external switch and shrinks BOM count, and primary-side regulation (PSR), which removes the optocoupler and secondary-side feedback circuits from the isolated converter. Advanced startup supports operation directly from the Ethernet input voltage, and spread spectrum frequency dithering (SSFD) eases EMI compliance. Technically, the TPS23758 is a Type 1 (13 W class) 802.3at PD solution. The current-mode flyback architecture with PSR delivers tightly regulated isolated outputs without a secondary feedback path, while the integrated high-voltage FET withstands PoE input transients. According to the TI product page, the high level of integration makes the TPS23758 an ideal solution for size-constrained applications such as IP cameras, wireless access points, and VoIP phones. Typical applications include IEEE 802.3at Type 1 PoE powered devices, IP network cameras, 802.11 access points, and IP telephones where board area and isolation compliance drive the design. A key design consideration is the converter transformer: PSR flyback designs require careful transformer selection (leakage inductance and turns ratio) to maintain output regulation accuracy; TI's TPS23758EVM-080 evaluation module provides a proven reference design. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
TPS2375PW-1 - IEEE 802.3af PoE PD Controller, 100V | Texas Instruments
The Texas Instruments TPS2375PW-1 is an IEEE 802.3af Power over Ethernet (PoE) Powered Device (PD) controller with auto-retry fault recovery, a 100-V rating, and a true open-drain power-good output, housed in an 8-pin TSSOP (PW) package rated for operation from -40C to +85C. Power over Ethernet is a technology defined by the IEEE 802.3af standard that delivers DC power alongside data over standard Category 5 Ethernet cabling. A PoE system consists of Power Sourcing Equipment (PSE), such as a PoE switch or midspan injector, and a Powered Device (PD), such as an IP camera, wireless access point, or VoIP phone. The PD controller is the interface IC that performs detection, classification, and inrush-current control so the PSE can safely identify and power the end device. It sits at the entry point of the PD power path, ahead of the isolated DC-DC converter that generates the system rails, and therefore forms part of the broader power management IC hierarchy. Key features of the TPS2375PW-1 include full compliance with the IEEE 802.3af specification, with device thresholds offset by 1.5 V from the standard to account for input diode-bridge drops, ensuring polarity-insensitive operation. The -1 suffix denotes second-generation silicon with a 100-V absolute maximum rating and a true open-drain power-good (PGB) output. Its defining differentiator is auto-retry: after an overcurrent fault, the device automatically attempts to re-enable the pass MOSFET instead of latching off, eliminating the need for a power cycle. An integrated 0.58-ohm sense element plus classification resistor support (Class 0-3, up to 12.95 W at the PD) reduces external component count. Architecturally, the controller integrates the detection and classification signature circuits, a 57-V rated hot-swap pass-element gate driver, current-limit and foldback protection, and thermal shutdown. The DETC pin manages detection behavior and the CLS pin programs the power class. During startup, controlled gate slew limits inrush current so the PSE is not tripped by capacitor charging; during a fault, the current limit engages and the auto-retry timer restarts the pass element once the fault clears. Typical applications include IP network cameras, 802.11 wireless access points, VoIP telephones, and PoE-enabled lighting or access-control nodes - anywhere a device must draw 13 W or less from an Ethernet port. The part pairs naturally with a flyback or forward converter to generate isolated low-voltage rails. A key design consideration is sizing the bulk input capacitance so inrush stays within the PSE inrush budget, and ensuring the external pass MOSFET and TVS diode meet the 100-V transient environment. Prices on this page are as of 2026-10-19 (LCSC from $2.3057). This page synthesizes distributor pricing, drop-in alternatives, practical design notes, and comparison data not found in the manufacturer datasheet alone.
TPS2378DDAR - IEEE 802.3at PoE+ PD Controller 0.85A | TI
The Texas Instruments TPS2378DDAR is an IEEE 802.3at high-power Power over Ethernet (PoE) powered device (PD) interface controller that continuously handles up to 0.85 A using a low 0.5-ohm internal switch, housed in an 8-pin SO PowerPAD (DDA/HSOIC) package rated from -40C to +85C. A PoE powered device interface is the front-end circuit that lets a network-enabled product safely draw power over the same Ethernet cable that carries its data. Sitting at the top of the power management hierarchy, it performs detection, classification, inrush current limiting and load switching per the IEEE 802.3af and 802.3at standards, before handing a regulated rail to downstream DC-DC converters. The TPS2378 is TI's PD interface controller in that family. Key features include support for both IEEE 802.3at type-2 (PoE+, up to 25.5 W at the PD) and 802.3af (PoE, class 0-3) operation, an auxiliary power detect (APD) input that gives priority to an external DC supply, and the internal 0.5-ohm pass switch that eliminates a discrete MOSFET. Automatic classification with the CLS pin and a T2P output signal simplify type-2 system designs. Architecturally, the TPS2378 integrates the IEEE detection and classification state machines, a thermal shutdown, and a gate driver for the internal pass element. The PowerPAD exposed pad on the DDA package provides enhanced thermal dissipation, which is what enables continuous 0.85 A operation through an on-chip switch. The 37-page TI datasheet documents the full state machine timing and threshold levels. Typical applications include IP security cameras, wireless access points, VoIP phones, PoE lighting (LED) drivers, and networked industrial sensors that must comply with 802.3at type-2 power budgets. Design-wise, the APD feature allows the PD to prefer a wall-adapter input; tie APD appropriately if auxiliary power is not used. Verify inrush compliance (type-2 class events) during qualification. This page adds distributor pricing, drop-in alternatives, and practical design guidance beyond the TI datasheet.
TPS2386BPW - Quad-Port PoE PSE Controller | Texas Instruments
The Texas Instruments TPS2386BPW is a quad-port Power-over-Ethernet (PoE) Power Sourcing Equipment (PSE) controller housed in a 64-pin TQFP (PW) package, designed to manage four independent Ethernet power ports in switch and midspan applications. A PoE PSE controller is a power management IC that sits inside a network switch, router, or PoE injector and governs the safe delivery of DC power over Ethernet cabling to powered devices (PDs) such as IP cameras, wireless access points, and VoIP phones. It handles detection, classification, and current limiting, and sits within the broader hierarchy of Ethernet power subsystems -> PoE PSE controller -> power management IC -> semiconductor. Key features of the TPS2386B family include multi-port PoE power management, integrated detection and classification of attached powered devices, per-port current and thermal supervision, and fault protection. The device supports autonomous operation modes that allow port power-up decisions without host intervention, reducing software burden on the switch CPU. Technically, the controller performs the standardized PD detection signature and classification handshake defined by IEEE 802.3 PoE specifications, monitors port current through external sense elements, and coordinates load sharing across ports. Fault conditions such as over-current, over-temperature, and undervoltage are reported through status outputs, enabling robust fault handling in enterprise networking equipment. Typical applications include PoE-enabled Ethernet switches, PoE midspan injectors, network-attached access point enclosures, and industrial Ethernet infrastructure. Quad-port integration makes the part attractive for switch designs where board area and BOM count must be minimized. Design consideration: PoE PSE controllers require careful layout of the high-current port paths and external MOSFETs; sense-resistor placement and thermal design directly affect accuracy and reliability, so follow the manufacturer datasheet layout guidance closely. This page synthesizes distributor availability, drop-in alternatives, and practical design guidance not found in a single manufacturer datasheet, helping engineers select and cross-reference the TPS2386BPW faster.
TPS23881ARTQT - 8-Ch 4-Pair Type-4 PoE PSE | Texas Instruments
The Texas Instruments TPS23881ARTQT is a 4-pair, Type-4, 8-channel Power-over-Ethernet (PoE) Power Sourcing Equipment (PSE) controller with 200 mΩ RSENSE and autonomous I2C/manual modes, housed in a 56-pin VQFN (8x8 mm) power package rated for industrial -40°C to +125°C operation. A Power-over-Ethernet PSE controller is a specialized mixed-signal IC that sits inside an Ethernet switch, midspan, or PoE injector and safely delivers DC power over the twisted-pair cabling to a Powered Device (PD) such as a wireless AP, IP camera, or lighting fixture. In the broader hierarchy, the TPS23881ARTQT is a PoE controller -> power management IC -> power switch IC -> interface IC -> semiconductor, enabling compliance with the IEEE 802.3bt (formerly 802.3at/at+bt) standard. Key features include support for 4-pair Type-3/Type-4 operation delivering up to 90 W per port, 200 mΩ current-sense resistors per pair for accurate current monitoring, integrated 0.5 Ω MOSFET gate drivers, I2C programmability with 16 addresses, autonomous semi-auto and manual modes, comprehensive per-port telemetry (voltage, current, temperature), and legacy PD detection. The 200 mΩ RSENSE significantly reduces power dissipation versus the 0.5 Ω external FET architectures used in older PSE designs. Architecturally, the TPS23881ARTQT integrates eight independent port controllers, each containing detection, classification (including 4-event classification for Type-3/4), inrush control, and disconnect monitoring. A precision bandgap reference and on-chip ADC support accurate current/voltage measurement. The device operates from a 44 V to 57 V supply (PoE nominal 48 V) and includes per-port thermal protection and current-limit foldback. Typical applications include enterprise-class 802.3bt PoE++ switches, Wi-Fi 6/6E access points, PTZ IP cameras, PoE lighting controllers, 5G small-cell backhaul, and industrial PoE midspans. Pairing with TI's FirmPSE system firmware enables scalability to 48-port systems across multiple cascaded TPS23881 devices. When designing with this device, ensure adequate bulk capacitance on the 48 V rail, observe 4-layer PCB layout recommendations for thermal management, and reserve I2C lines for multi-device addressing. The autonomous mode reduces firmware overhead for cost-sensitive designs while the I2C interface unlocks per-port telemetry in managed switches.
TPS23881RTQR - 8-Ch 802.3bt PoE PSE Controller | Texas Instruments
The Texas Instruments TPS23881RTQR is an 8-channel, 4-pair, Type-4 Power-over-Ethernet (PoE) Power Sourcing Equipment (PSE) controller housed in a 56-pin VQFN (RTQ) package (8x8 mm). It complies with the IEEE 802.3bt standard, supports 200-mΩ RSENSE current sensing, and delivers up to 90 W per port across 2-pair or 4-pair configurations with auto-mode and semi-auto-mode operation. A Power-over-Ethernet PSE controller is the device that injects DC power onto Ethernet cable pairs in compliance with IEEE 802.3af/at/bt. The PSE resides inside the network switch or midspan hub and negotiates detection, classification, and inrush with the Powered Device (PD) at the far end of the cable. Within the broader system hierarchy, the TPS23881 belongs to Power Management ICs > Power Switch / Hot Swap > PoE PSE Controllers, and integrates the analog front end, MOSFET drivers, signature detection, and an I2C/SPI management interface so that an external host or firmware can configure port-by-port behavior. Key features of the TPS23881RTQR include 200-mΩ sense resistance for high-efficiency current monitoring, integrated 0.1-ohm hot-swap FETs per channel, autonomous or host-controlled port management, individual port current and voltage readback, and robust protection with current-limit, inrush timeout, and thermal shutdown. The 56-pin VQFN RTQ package with an exposed thermal pad delivers a low θJA, allowing all 8 channels to operate at 802.3bt Type-4 power levels without external heatsinking on typical 4-layer PCBs. From an architectural standpoint, the TPS23881 uses per-channel analog current-sense amplifiers and 12-bit ADC telemetry, paired with a digital control engine that runs TI's FirmPSE firmware. This dual firmware architecture allows multi-port scalability (up to 48 ports across multiple TPS23881 devices) while keeping the host CPU free for higher-layer PoE management functions. The IC supports 1-bit legacy detection, 4-point class detection, and 802.3bt multi-event classification for reliable PD discovery. Typical applications include enterprise PoE switches (up to 48 ports), industrial Ethernet switches with PoE+ or 802.3bt, IP surveillance cameras and NVR systems, wireless access points (Wi-Fi 6/6E/7), digital signage, and any switch port delivering up to 90 W over structured cabling. When designing with this part, ensure adequate copper area on the EP pad (TI recommends ≥4 thermal vias to an inner plane), follow the layout guidance in the datasheet's layout section, and size the upstream 54 V supply per the worst-case 4-pair load. Pay close attention to inrush and turn-off sequencing to avoid PD-side latch-up. This page synthesizes distributor pricing, cross-reference alternatives, and practical layout notes that extend beyond the manufacturer datasheet.
TPS23882RTQR - 8-Channel PoE PSE Controller | TI
The Texas Instruments TPS23882RTQR is a Type-3, 2-pair, 8-channel Power over Ethernet (PoE) power sourcing equipment (PSE) controller with embedded SRAM programmability and integrated 200 milliohm current sense resistors, housed in a 56-pin QFN (8x8 mm) package rated from -40C to +125C. It inserts power onto Ethernet cabling in accordance with the IEEE 802.3bt standard and remains backward compatible with IEEE 802.3af (PoE) and 802.3at (PoE+) powered devices. A PoE PSE controller is a power management IC that manages detection, classification, and controlled power delivery onto Ethernet data pairs, sitting at the top of the PoE system hierarchy (PSE controller -> PoE system -> Ethernet power infrastructure). The PSE must detect valid powered device signatures, complete mutual identification, and apply power only after classification succeeds, protecting both the switch port and the PD. Key features include 8 independent ports supporting up to 30 W per port in Type-3 2-pair mode, on-chip 200 mOhm sense resistors that reduce BOM count and board area versus external-sense designs, and SRAM-based programmability for custom detection and classification profiles. Port remapping and pin-to-pin compatibility with the TPS2388, TPS23880, and TPS23881 devices enable interchangeable PCB designs across TI's PSE controller family. The TPS23882 improves on the earlier TPS2388 by reducing current sense resistor requirements and adding SRAM programmability, lowering total system cost for multi-port PoE switches. It manages valid signature detection, AC discharge, classification, and per-port current limiting autonomously, or under host MCU control via a serial management interface. Typical applications include enterprise PoE switch line cards, network video recorder and surveillance switch ports, wireless access point power delivery, and multi-port PoE midspan injectors where 802.3bt compliance is mandatory. When designing the board, use TI reference layouts to preserve interchangeable footprints across TPS2388x family members, and verify thermal performance when running all 8 ports at full 30 W loads. This page synthesizes verified distributor pricing, drop-in alternatives within the TI PSE family, and practical design notes not found in the manufacturer datasheet.
TPS23882RTQT - 8-Ch Type-3 PoE PSE Controller | TI
The Texas Instruments TPS23882RTQT is an 8-channel, Type-3, 2-pair Power Sourcing Equipment (PSE) controller with SRAM programmability and 200 mOhm current sense resistors, housed in a 56-pin VQFN (8x8 mm) package. It inserts power onto Ethernet cables in accordance with IEEE 802.3bt, and also supports 802.3at (PoE+) and 802.3af (PoE) standards. A PoE PSE controller is a power management IC that sits at the switch or injector side of an Ethernet link. It performs powered-device detection, classification, mutual identification, and controlled power application per the IEEE 802.3 power-over-Ethernet specifications, protecting both the cable plant and the PD from faults such as overcurrent and inrush events. Key features include 8 independent PoE channels for 2-pair power delivery, IEEE 802.3bt Type-3 compliance, on-chip SRAM for firmware and configuration flexibility, and reduced 200 mOhm sense resistors that lower power dissipation versus earlier generation designs. The TPS23882 improves on the TPS2388 with these lower sense resistance values and SRAM programmability, simplifying thermal design in high-density switches. Architecturally, the device integrates detection and classification engines per port, I2C and autonomy-mode operation, port remapping, and protection features including overcurrent, overload, and short-circuit handling. Port remapping and pin-to-pin compatibility with the TPS2388, TPS23880, and TPS23881 devices enable interchangeable 2-layer PCB designs across different system PoE power configurations, easing migration from previous generation PSE designs. Typical applications include enterprise PoE switch line cards, midspan injectors, campus and industrial network infrastructure, and wireless access point powering systems where multiple 802.3bt-capable ports are required in a compact footprint. A key design consideration is sizing the external hot-swap MOSFETs and sense resistors for the per-port current class, and providing adequate copper area under the VQFN exposed pad for thermal dissipation at full 8-port load. This page synthesizes distributor pricing, pin-compatible family alternatives, and practical design notes not found in the manufacturer datasheet.
TPS2393 - -48V Hot Swap Controller | Texas Instruments
The Texas Instruments TPS2393 is a hot swap power manager optimized for nominal -48-V telecom and industrial systems. It operates over a supply voltage range of -20 V to -80 V and is rated to withstand spikes to -100 V. The device is available in a 14-pin TSSOP package (PW suffix) and provides essential hot swap functions including inrush current limiting, overcurrent protection, and fault reporting. A hot swap controller is a power management IC that safely inserts or removes a circuit board from a live backplane without causing glitches or damage. It manages the inrush current during insertion, monitors the load current, and disconnects the load on fault conditions. In the power management hierarchy, a hot swap controller sits between the system power bus and the load, acting as an intelligent switch and protector. Key features of the TPS2393 include a wide input voltage range of -20 V to -80 V, a programmable inrush current limit, and an active-low fault output for system monitoring. The device also provides a programmable undervoltage lockout (UVLO) and overvoltage protection, ensuring robust operation in harsh telecom environments. The TPS2393 is designed for -48-V systems, which are standard in telecommunications and networking equipment. The TPS2393 uses a charge pump to drive an external N-channel MOSFET, allowing low-loss power path control. It includes a programmable timer for fault retry and a latch-off mode for persistent faults. The device is specified for the industrial temperature range (-40°C to +85°C) and is RoHS compliant. The 14-pin TSSOP package is compact and suitable for space-constrained designs. Typical applications include telecom line cards, base station power distribution, server backplanes, and industrial -48-V power distribution systems. The TPS2393 is ideal for any system requiring safe board insertion and removal in a -48-V environment. When designing with the TPS2393, ensure the external MOSFET is properly sized for the maximum load current and that the sense resistor is selected to set the desired current limit. The UVLO and fault timer resistors should be chosen to match the system's power-up requirements.
TPS2421-1DDAR - 5A 20V Hot Swap Controller | Texas Instruments
The Texas Instruments TPS2421-1DDAR is a 5 A, 20 V integrated-FET hot-swap controller in an 8-pin SO PowerPad (DDA) package that provides highly integrated load management and superior protection on busses up to 20 V. The device integrates a 33 mOhm pass MOSFET with full hot-swap control logic, enabling programmable inrush current limiting, current-fault timer, and overcurrent latch-off in a single IC. The wide 3 V to 20 V operating range also supports standard 3.3 V, 5 V, and 12 V bus rails where a maximum 2.9 V UVLO turn-on threshold prevents false restart. A hot-swap controller is a power-management IC that inserts between a backplane supply and a removable or inrush-sensitive load, replacing the legacy practice of fusing the rail. The controller manages the inrush transient (created when the load's bulk capacitors charge), provides fault isolation (so a short on one card does not collapse the entire bus), and offers programmability via simple external resistors and capacitors. The TPS2421 family sits inside the broader taxonomy of eFuse / hot-swap / load-switch ICs, which are themselves a sub-category of power-management semiconductors that combine power MOSFETs with supervisory analog. Key features of the TPS2421-1DDAR include an integrated 33 mOhm pass MOSFET rated for 1.8 A to 5.5 A of adjustable load current, a programmable hard current limit, a programmable fault timer for transient filtering, and a non-current-limiting fault threshold for hard overcurrent response. Active-high enable input, fault-output flag, and thermal shutdown are also integrated, and the PowerPad exposed die pad gives a low theta-JA for heat removal in tight layouts. Internally, the device uses a current-sense FET topology with an internal charge pump to drive the N-channel MOSFET, paired with two comparators - one for the adjustable fault timer and one for hard current limit. The architecture trades some accuracy for integration, but in return delivers a parts-count of 3 to 4 external components (timer cap, IMON resistor, IMON-FLT resistor divider), far less than a discrete hot-swap design. The PowerPad package enables the 5 A continuous current without raising junction temperature beyond safe limits. Typical applications include RAID/HDD hot-plug bays, server and telecom line cards, industrial 12 V / 24 V distributed-bus loads, and USB-PD / eFuse roles where the 20 V upper rating easily covers 20 V USB-PD Source voltages. Designers also use it as a smart replacement for inline fuses and PTCs in space-constrained boards. When designing with the TPS2421-1DDAR, always populate the PowerPad with a thermal via array to a ground copper pour. Use Kelvin connection on the load-current sense resistor to avoid IR drop corruption, and choose the fault capacitor with dielectric matching to the chosen fault time. This page synthesises distributor pricing, drop-in alternatives, and practical design notes that supplement the manufacturer datasheet.
TPS24713DGS - 18V Hot-Swap Controller w/ Power Limit | TI
The Texas Instruments TPS24713DGS is a 2.5-V to 18-V high-efficiency power-limiting hot-swap controller that drives an external N-channel MOSFET in a 10-pin VSSOP (DGS) package. The device provides inrush current limiting, programmable FET SOA protection, accurate current-sense threshold of 25 mV, a power-good (PG) output, and a fast breaker for short-circuit protection with auto-retry fault response. A hot-swap controller is a power-management IC that safely inserts or removes a circuit card from a live backplane by controlling the gate of an external MOSFET as a soft-start element. The TPS24713 belongs to the hot-swap controller IC family within the broader category of power-management semiconductors, sitting between DC-DC converters and discrete protection circuits such as eFuses and PTC resettable fuses. By regulating inrush current and isolating faulty loads, hot-swap controllers prevent backplane collapse and connector arcing in multi-board systems. Key features include 2.5 V to 18 V operating range, adjustable current limit, programmable FET SOA protection via the power-limiting loop, accurate 25 mV current-sense threshold that minimises sense-resistor losses, a power-good output for downstream sequencing, and an auto-retry fault response that latches off in fault conditions and automatically retries after a programmed interval. The combination of current-limit loop and power-limit loop provides superior SOA protection over current-limit-only competitors. The TPS24713 uses a dual-loop architecture: an inner current-sense loop (trans-conductor amplifier at 25 mV) regulates inrush and steady-state current, while an outer power-limit loop (analog multiplier of VDS and ID) protects the external MOSFET against thermal runaway. The 25 mV sense threshold allows a 2 mΩ sense resistor for a 12.5 A load with minimal conduction loss, and the programmable power-limit timer balances SOA utilisation against nuisance tripping. Typical applications include RAID and hot-plug disk drives, blade servers, redundant telecom -48 V distribution, PCI/PCIe hot-plug cards, and industrial high-side switches. The 10-pin VSSOP (DGS) footprint suits compact add-in cards and ATCA/IPMB designs. The auto-retry response is well suited to remote, unattended systems that must recover from transient faults without operator intervention. When designing with this device, choose the external MOSFET's RDS(on) and SOA rating together with the sense resistor value to balance conduction loss against trip accuracy. The power-good output can directly drive an enable pin on a downstream DC-DC converter for sequenced power-up. This page synthesises distributor pricing, drop-in alternatives, and practical design notes for the TPS24713DGS not found in the manufacturer datasheet alone, including same-family TI variants (TPS24710, TPS24711, TPS24712, TPS2491) for footprint-compatible upgrades.
TPS24713DGSR - 2.5-18V Hot-Swap Controller, Auto-Retry | TI
The Texas Instruments TPS24713DGSR is a 2.5 V to 18 V high-efficiency, power-limiting hot-swap controller with auto-retry fault response, housed in a 10-pin VSSOP (DGS) package. It safely drives an external N-channel MOSFET to provide inrush current limiting, load current protection, and fault isolation on plug-in cards and live-insertion backplanes, with an operating temperature range of -40C to +85C. A hot-swap controller is a specialized power-management IC that allows a circuit board to be inserted into or removed from a live backplane without causing damaging inrush currents, voltage droops, or connector arcing. Hot-swap controllers sit in the hierarchy: hot-swap controller -> power management IC -> semiconductor, and are essential building blocks for high-availability systems that require hot-plug capability. Key features include a 2.5 V to 18 V operating supply range, programmable power-limiting fault current, programmable fault timeout, an open-drain power-good (PG) output, and an open-drain fault (FLT) indicator. The auto-retry variant (TPS24713) retries after a fault, while the latched variant (TPS24712) latches off. The device is part of the TPS24710/11/12/13 family, with the TPS24710/11 differing in fault response timing. The TPS24713 uses an external N-channel MOSFET sense element with a current-sense resistor (RSENSE) and a high-side gate driver. The sense voltage across RSENSE is amplified and compared against a programmable power-limit reference, allowing the controller to regulate power dissipation rather than peak current - a key differentiator from current-only hot-swap controllers. This architecture provides predictable SOA operation for the MOSFET under varying load conditions. Typical applications include server and storage hot-plug bays, RAID controllers, 12 V distributed-power systems, telecom plug-in modules, industrial PC cards, and ATCA/AdvancedTCA cards. Its wide 2.5 V to 18 V input range covers 3.3 V, 5 V, and 12 V rails, making it broadly applicable across enterprise, telecom, and industrial platforms. When designing with the TPS24713, pay attention to the sense-resistor selection and the associated power dissipation: choose a low-ohm RSENSE (typically 5-50 mOhm) to minimize loss, but ensure the resulting power-limit threshold is above maximum steady-state load. Add a gate-source pull-down resistor (typically 100 kOhm) for safe MOSFET turn-off during controller power-down. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a complete procurement and design reference for the TPS24713DGSR.
TPS2491DGSR - 80V Hot Swap Controller w/ Auto-Retry | TI
The Texas Instruments TPS2491DGSR is a positive high-voltage, power-limiting hot-swap controller that drives an external N-channel MOSFET, rated for 9V to 80V operation and housed in a 10-pin MSOP/VSSOP (DGS) package. It delivers programmable power limiting and independent current limiting to keep the external FET inside its safe operating area (SOA), and it auto-retries after a fault. A hot-swap controller is a specialized power-management IC that inserts a circuit board into a live backplane by controlling the inrush current that charges bulk capacitance. The TPS2491 belongs to the hot-swap controller category, which sits within the broader power-management IC (PMIC) family. It protects upstream supplies from faults caused by shorted loads, failed capacitors, or connector mis-mates during live insertion. Key features include a wide 9V to 80V operating range, 100V absolute-maximum VIN tolerance, 0.01A minimum programmable current limit, and adjustable power limiting with Auto-Retry response. The MSOP/VSSOP-10 footprint integrates the controller into dense telecom, server, and industrial backplane designs where PCB area is constrained. Auxiliary functions include a fault output and a programmable timer that latches retry attempts at user-defined intervals. Technically, the device uses an external sense resistor to monitor load current, an internal transconductance amplifier to enforce both the current-limit and power-limit loops, and a gate-driver capable of pulling 10uA source / 100uA sink to control standard N-FETs. Two independent analog adjustments let the engineer shape the SOA envelope to match a specific MOSFET's pulsed rating. Typical applications include 48V telecom rectifier hot-swap modules, blade servers with redundant -48V feeds, industrial 24V/36V PLC chassis, and battery-backup insert cards. The Auto-Retry variant (vs TPS2490's latched fault) suits unattended systems where the controller must restore service after a transient short clears itself. When laying out the PCB, keep the sense-resistor Kelvin traces short and direct, place the gate pull-down resistor close to the FET gate, and bypass VCC with a 1uF X7R adjacent to the IC. Avoid routing analog signal traces under the gate-drive node to prevent false triggering from dV/dt coupling. This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Review the comparison table and selection guide before finalizing the BOM.
TPS2493PWR - 80V Hot Swap Controller w/ Power Limit | Texas Instruments
The Texas Instruments TPS2493PWR is a positive high-voltage, 9 V to 80 V hot-swap controller with programmable power foldback, analog current monitor, and Auto-Retry fault response, packaged in a 14-pin TSSOP (PW). It drives an external N-channel MOSFET in the high-side path and uses a programmable power-limit loop to keep the FET inside its safe operating area (SOA) during large load steps and overloads. What is a hot-swap controller? A hot-swap controller is a power-management IC that safely inserts a board or sub-system into a live backplane by inrush-limiting and protecting the upstream supply against catastrophic short-circuit faults. Hot-swap controllers sit hierarchically under power management ICs (PMICs), alongside eFuse devices, ORing controllers, and ideal-diode controllers; together they form the system-protection layer between a raw supply rail and the point-of-load regulators that follow it. Key specifications of the TPS2493 include 9 V to 80 V operating range, programmable power-limit foldback, an adjustable current-limit threshold, fault timer with auto-retry, an analog current-monitor output (IMON) proportional to load current, and an internal charge pump capable of driving the gate of a high-side N-channel FET. The device uses an external sense resistor (RSENSE) for current sensing and two resistors to program the power-limit reference, giving the designer full SOA-tailoring flexibility. The wide VIN range makes it well-suited to 12 V, 24 V, 28 V, and 48 V industrial busses, including telecom -48 V feeds after rectification. Architecturally, the TPS2493 employs a constant-power foldback loop that dynamically reduces the allowable current as VDS across the FET rises, ensuring the FET operates within SOA across the full range of load and input conditions. The analog IMON output reflects the sensed current with a transconductance that allows direct interfacing to an ADC or comparator. Fault-handling includes a programmable fault timer and Auto-Retry response (vs. TPS2492 latch-off), allowing the controller to clear transient faults without system intervention. Typical applications include hot-swap insertion in 24 V industrial PLC chassis, 48 V telecom board in-rush protection, RAID and server backplane power switching, 36 V battery-pack protection in e-mobility, and any +12 V/+24 V distributed-power bus that must tolerate load transients on insertion. When designing with the TPS2493, choose RSENSE based on worst-case load current, then verify the FET SOA curve against the programmed power-limit profile across VDS = 0 V to VINmax. Decouple VCC with a 1 µF X7R close to the pin, keep the SENSE traces short, and add a TVS such as SMBJ33A at the input for surge immunity. Use the IMON output for system telemetry and tie FAULT to a host GPIO to log fault events. This page synthesizes distributor pricing, datasheet-cited specifications, drop-in alternatives from the same TI HotSwap family, and practical design notes that go beyond what appears on the TI datasheet cover page.
TPS2513A-Q1 - USB DCP Controller | TI | Automotive Charging
The TPS2513A-Q1 is an automotive-grade USB dedicated charging port (DCP) controller from Texas Instruments, designed to enable fast and compliant charging of mobile phones and tablets in vehicle USB ports. It integrates an auto-detect feature that monitors the USB data line voltages and automatically provides the correct electrical signatures on the D+ and D- lines to support multiple charging schemes, including Divider 3 mode (2.7V/2.7V), BC1.2 DCP mode, Chinese Telecommunications Industry Standard YD/T 1591-2009, and Apple 2.4A/2.1A/1.0A charging modes. The device is available in a 6-pin SOT-23 package (2.90mm x 1.60mm) and operates over a junction temperature range of -40°C to +125°C, making it suitable for harsh automotive environments. A USB dedicated charging port (DCP) controller is a specialized power management IC that enables a USB port to deliver charging current to portable devices without requiring data communication. It works by presenting specific voltage levels on the USB data lines (D+ and D-) to signal to the connected device that it is connected to a dedicated charger, thereby allowing the device to draw its maximum rated charging current. DCP controllers are essential components in automotive infotainment systems, car chargers, and aftermarket USB hubs, where they ensure safe and efficient charging of smartphones, tablets, and other portable electronics. They fall under the broader category of power management ICs, specifically within the subcategory of USB power delivery and charging controllers. Key features of the TPS2513A-Q1 include support for four major charging protocols, automatic detection of the connected device's charging requirements, and a low quiescent current to minimize battery drain when the port is idle. The device also includes short-circuit and thermal protection to safeguard the controller and the connected device. Its automotive qualification (AEC-Q100) ensures reliable operation under extreme temperature and voltage conditions, making it ideal for use in vehicles. From a technical perspective, the TPS2513A-Q1 uses a simple yet robust architecture that monitors the D+ and D- line voltages and switches internal resistors to generate the appropriate signatures. The device does not require external programming; it automatically selects the correct mode based on the detected device. This simplifies design and reduces BOM cost. The SOT-23 package is compact and suitable for space-constrained PCB layouts, and the device's low power dissipation allows for simple thermal management. Typical applications include automotive USB charging ports, in-vehicle infotainment systems, rear-seat entertainment systems, and aftermarket car chargers. The TPS2513A-Q1 is also used in industrial and consumer applications where multiple charging protocols must be supported. Its wide operating temperature range and automotive qualification make it a preferred choice for designs that require high reliability. When designing with the TPS2513A-Q1, ensure that the USB data lines are properly routed and that the device is placed close to the USB connector to minimize parasitic capacitance. Additionally, provide adequate decoupling on the VCC pin and follow the recommended layout guidelines in the datasheet to achieve optimal performance.
TPS2514AQDBVRQ1 - Automotive USB DCP Controller | TI SOT-23-6
The Texas Instruments TPS2514AQDBVRQ1 is an automotive-qualified USB Dedicated Charging Port (DCP) controller in a 6-pin SOT-23 (DBV) package, designed to charge popular mobile phones and tablets by automatically applying the correct electrical signatures on the USB data lines. It supports Divider 3 mode (2.7 V on D+ / 2.0 V on D-), the BC1.2 shorted-mode per the Chinese YD/T 1591-2009 telecom standard, and the 1.2 V mode on legacy Apple devices. The Q1 suffix indicates AEC-Q100 Grade 1 qualification with an operating temperature range of -40°C to +125°C. What is a USB Dedicated Charging Port controller? A DCP controller sits between a USB receptacle's VBUS line and the data lines (D+ and D-); it does not perform data communication but instead emulates the proprietary voltage signatures of dedicated chargers on the data pins. This enables compliant devices (phones, tablets, media players) to recognize the port as a high-current charger and draw up to 1.5 A (BC1.2) or 2.4 A (Apple mode) without enumeration. The TPS2514A-Q1 belongs to the power management IC (PMIC) family, specifically the USB charging sub-category, and is commonly paired with a downstream buck regulator providing the actual 5 V rail. Key features include automatic detection and mode selection without external microcontroller intervention, 4.5 V to 5.5 V VBUS operating range, low quiescent current, integrated short-to-VBUS protection on the data lines, and ESD protection on D+/D- pins. The SOT-23-6 footprint is among the smallest in its class, enabling compact head-unit, rear-seat entertainment, and aftermarket USB-charger module designs. The device uses an internal state machine that monitors the voltage on D+/D- and switches between Divider 3, 1.2 V, and BC1.2 modes based on what the attached device expects. Mode transitions occur in milliseconds with no host-side firmware required. Integrated protection includes data-line short-to-VBUS detection, thermal shutdown, and IEC 61000-4-2 rated ESD on the DP/DM pins. Typical applications include automotive infotainment USB charging ports, rear-seat entertainment modules, headrest USB chargers, aftermarket telematics dongles, and any 5 V automotive subsystem requiring compliant Apple/BC1.2 charging signatures. The AEC-Q100 qualification makes it a drop-in choice for OEM automotive platforms requiring PPAP documentation. When designing with this part, place 0.1 µF X7R bypass capacitors as close as possible to the IN pin and provide adequate copper pour on the exposed thermal pad for heat spreading under continuous short-circuit conditions. Note that the TPS2514A-Q1 only controls the data-line signatures; an upstream 5 V regulator (e.g., TPS62150 or LMR14030) is still required to source VBUS current. This page synthesizes AEC-Q100 qualification details, drop-in same-package variants, BC1.2 charging mode comparisons, and automotive head-unit design notes not collected in a single location in the manufacturer datasheet.
TPS2547RTER - USB Charging Port Controller, 3A Power Switch | TI
The Texas Instruments TPS2547RTER is a USB charging port controller and 3 A power switch with an integrated USB 2.0 high-speed data line (D+/D-) switch, housed in a 16-pin WQFN (3.00 mm x 3.00 mm) package with exposed thermal pad. The device delivers an output current range of 0.2 A to 3.0 A, supports an input voltage of 5.5 V max, and provides USB Battery Charging Specification 1.2 (BC1.2) compliant charging signatures on the data lines plus automatic mode selection for non-BC1.2 devices. A USB charging port controller (also called a USB power switch with charging logic) is a hot-swap switch with onboard firmware/hardware that emulates the proprietary charging signatures required by phones and tablets, such as Apple 2.4 A, Samsung 2.0 A, and Chinese YD/T 1591-2009. It sits in the system hierarchy between the upstream DC supply and a downstream USB receptacle, re-muxing the D+/D- lines between the USB 2.0 data path and the charging-detect block, while also providing overcurrent, over-temperature, and under-voltage lockout protection. Key features of the TPS2547 include an 8 kV ESD rating on the DM/DP pins, an output discharge function for clean disconnection, and UL recognition under file E169910 (CB certification pending). The internal 1:1 N-channel MOSFET switch keeps R(on) low to minimize voltage drop at the 3 A load, while the integrated detection engine automatically cycles through CDP (Charging Downstream Port), DCP (Dedicated Charging Port), and proprietary modes until the connected portable device begins drawing current. Quiescent current is specified at 2 uA (disabled) and 270 uA (enabled). Architecturally the TPS2547 combines a USB 2.0 high-speed switch, a current-limit/protection block, and a BC1.2 state machine in a single die. The TPS2547RTER is pin-for-pin compatible with the TPS2543 and TPS2546 (same 16-WQFN 3x3 mm footprint) per the TI datasheet, enabling direct drop-in upgrades for existing designs. The device is targeted at 5 V system rails typical of USB ports. Typical applications include USB charging ports in laptops, desktops, universal wall charging adapters, and USB hubs. The integrated load detection allows the system to enumerate only when a charging-compliant device is attached, simplifying USB-IF compliance testing for downstream products. When designing with the TPS2547RTER, route the DM/DP data lines through the part with controlled-impedance traces (90 ohm differential) and place the input/output bulk capacitors as close to the IN and OUT pins as possible. Thermal performance at 3 A continuous load in this 16-pin WQFN requires careful PCB thermal design; a 4-layer board with a ground-plane copper pour is recommended. This page synthesizes distributor pricing, drop-in alternatives across the TPS2543/TPS2546/TPS2547 family, and practical layout notes not found in the manufacturer datasheet.
TPS25751DREFR - USB-C PD 3.2 Controller with Moisture Detection | TI
The Texas Instruments TPS25751DREFR is a stand-alone USB Type-C and USB Power Delivery (PD) 3.2 controller with integrated power paths, moisture detection, and programmable power-supply (PPS) support, housed in a 38-pin WQFN (REF) 4x6 mm package. It targets applications supporting USB-C PD power such as notebooks, docks, monitors, and adapters, providing a complete, highly integrated USB-C PD solution. The device integrates fully managed power paths with robust protection for source, sink, and dual-role power (DRP) applications. What is a USB Type-C PD controller? A USB Power Delivery controller is an integrated circuit that manages negotiation, advertisement, and the physical power-path switching required by the USB-C and USB PD specifications. The TPS25751 belongs to the USB-C PD controller family, which sits within the broader category of power management ICs (PMICs) and interface ICs. It uses the USB PD 3.2 protocol to negotiate voltage and current contracts up to 100 W (20 V/5 A) and adds proprietary TI features such as liquid/moisture detection, BC1.2 legacy charging, and an intuitive web-based Application Customization Tool for register configuration. Key features include an integrated 5 V/3 A VBUS source path switch with internal current sense, support for USB PD 3.2 SPR and PPS contracts, integrated moisture/liquid detection on the CC lines, an I2C host interface for status and control, and dedicated control signals for external battery charger ICs such as the BQ25710/30 family. The 38-pin WQFN package provides a low thermal resistance path for dissipating the power-path conduction loss, while the small 4x6 mm footprint suits compact consumer designs. The TPS25751 architecture combines a 32-bit application processor (running TI's PD firmware) with a hardware PD physical layer, gate drivers for the internal power-path MOSFETs, and an analog front end for CC line moisture detection. Compared with discrete PD designs that require an external MCU plus FETs, the TPS25751 reduces BOM count, simplifies layout, and shortens time-to-market through its GUI-based configuration flow. Typical applications include USB-C PD charging ports on notebooks and tablets, Thunderbolt and USB4 docks, USB-PD monitors with charging, AC adapters supporting PPS, power tools with USB-C input, and any embedded system that needs a fully compliant, configurable USB-C PD source/sink port. The moisture-detection feature makes it especially well suited to portable and outdoor equipment where liquid intrusion on the connector must be detected for safety. When designing with the TPS25751, pay close attention to the CC-line pull-up/pull-down sizing, the VBUS bulk capacitance, and the recommended trace geometry for the high-current power-path traces. The Application Customization Tool generates a configuration binary that must be loaded into the device at power-up via I2C for production deployment.
TPS25814RSMR - USB Type-C Controller with Integrated Source Power Switch | Texas Instruments
The Texas Instruments TPS25814RSMR is a stand-alone USB Type-C controller with an integrated source power switch, housed in a 32-pin VQFN (RSM) 4x4 mm package. It performs cable plug and orientation detection for one USB Type-C connector and, upon cable detection completion, enables the internal power path compliant with the USB Type-C specification. The device integrates VBUS short protection on the CC pins and supports status indicator outputs that may be used to control an external multiplexer. A USB Type-C controller is a specialized power management IC (PMIC) that manages the USB Type-C attachment, orientation (CC1/CC2 polarity), and cable role detection. It sits between the system power supply (typically a 5V rail) and the USB Type-C connector, negotiating VBUS current advertisement and protecting the system from fault conditions on the connector pins. The TPS25814 belongs to the USB interface IC hierarchy: USB Type-C controller -> USB interface IC -> interface IC -> power management IC -> semiconductor. Key features include integrated source power switch with current limiting, USB Type-C cable detection, VBUS short-to-VBUS and short-to-GND protection on CC pins, two status indicator outputs (PORT and CABLE), and a wide input supply range from 4.5V to 36V. The device also offers thermal shutdown, reverse-current blocking, and an industry-standard VQFN-32 footprint that simplifies PCB layout for compact Type-C source applications. The TPS25814 uses a smart detection state machine that monitors the CC1 and CC2 pins to detect attach, orientation, and Type-C accessory modes, then advertises the configured current to the sink device. The integrated N-channel MOSFET source switch with low on-resistance minimizes power dissipation during VBUS delivery, while the built-in protection circuitry guards against ESD and over-current events common in user-facing ports. Typical applications include USB Type-C source ports in industrial PCs, single-board computers, USB-C wall adapters, automotive infotainment USB ports, and any system requiring a simple 5V VBUS source from a Type-C receptacle. The device is commonly used in printer docking stations, point-of-sale terminals, and embedded computing modules where a small-footprint, fully integrated Type-C source is required. When designing with this device, ensure input capacitance meets USB Type-C source requirements (typically 10uF minimum on VBUS) and select appropriate current advertisement pull-up values for default-current, medium-current, or high-current modes. The PORT and CABLE indicator pins can drive external LEDs or GPIOs to inform the host MCU about attachment state without additional I/O expanders. This page synthesizes distributor pricing, drop-in same-brand variants, and practical design considerations not consolidated in the manufacturer datasheet, giving engineers a single reference for sourcing, replacement, and application guidance.
TPS25865QRPQRQ1 - Dual 2.4A USB Type-A Charging Port Controller | TI
The Texas Instruments TPS25865QRPQRQ1 is a dual-channel, 2.4-A USB Type-A charging-port controller with load shedding, cable compensation, and thermal management, housed in a 25-pin VQFN-HR (RPQ) package measuring 3.5 mm x 4.5 mm. It operates over a 5.5 V to 26 V input range, delivers per-port current up to 2.4 A (BC 1.2 CDP/DCP modes), and integrates two synchronous buck converters with internal MOSFETs and current-mode control. The device is AEC-Q100 qualified for automotive USB charging ports. A USB Type-A charging-port controller is a specialized power management IC that combines a synchronous step-down DC-DC converter with USB Battery Charging Specification 1.2 (BC 1.2) detection logic and cable compensation. It sits in the system hierarchy between the upstream battery or 12 V bus and the downstream USB Type-A connector, replacing discrete buck converters plus USB switch ICs and enabling a single-chip USB charging subsystem that meets the Apple, Samsung, and BC 1.2 charging signatures without external firmware. Key features include integrated 36 V load-dump protection, programmable cable compensation (up to 1.2 V boost across cable impedance), per-port current limit, dynamic load shedding between ports, thermal shutdown with adjustable threshold, and an I2C interface for status monitoring. Internal MOSFETs eliminate external FET selection, and the 25-pin VQFN-HR package exposes a thermal pad that ties to PCB ground for efficient heat dissipation under dual-port full-load conditions. Architecturally, the TPS25865-Q1 uses peak current-mode control with internal compensation, a 5 V tolerant enable logic interface, and dedicated port detect blocks for each USB channel. The two channels share a single VCC rail but operate independently with separate current sensing. This dual-channel topology reduces external BOM count by approximately 30 percent compared to discrete two-port solutions and supports asynchronous port enable to manage inrush on hot-plug events. Typical applications include automotive head-unit USB charging ports, rear-seat entertainment USB hubs, infotainment front-panel charging outlets, and industrial USB power delivery where dual Type-A connectors are required. Cable compensation maintains 5 V at the device under load even when connected through long OEM harnesses, which is critical for Apple 2.4 A fast-charging compliance. When designing with this part, lay out a 4-layer PCB with the exposed thermal pad tied to a 1 oz copper pour spanning at least 0.5 square inches to keep junction temperature below the 125 C automotive limit under 5 W dual-port dissipation. Keep the USB DP/DM traces short and reference the 1 uF VCC bypass capacitor directly to the exposed pad ground. This page combines verified distributor pricing, parametric comparison against same-family TI USB-charging controllers, and practical PCB thermal notes not consolidated in the datasheet alone.
TPS259230DRCR - 5V 5A 28mOhm eFuse with BFET Driver | TI
The Texas Instruments TPS259230DRCR is a 4.5-V to 5.5-V, 28-mOhm, 1-A to 5-A eFuse (electronic fuse) with integrated driver for an external blocking FET, housed in a 10-pin VSON (DRC) 3x3 mm package. It provides robust circuit protection and integrated power management for 5-V rails with up to 5 A continuous load current. An eFuse (electronic fuse) is a solid-state circuit-protection and power-management IC that replaces discrete fuses, MOSFETs, and supervision ICs. It sits between a power source and its load, protecting against over-current, short-circuit, over-voltage, inrush current, and reverse-current faults. Compared to a polymeric PTC or glass fuse, an eFuse is resettable, programmable, and far faster - reacting in microseconds rather than seconds. It belongs to the broader category of hot-swap controllers / power management ICs in the TI power-tree hierarchy. The TPS259230DRCR adds an external N-FET blocking driver, enabling true input-side reverse-current blocking. Key features include an adjustable current-limit threshold from 1 A to 5 A (set by ILIM pin), 28 mOhm typical on-resistance, integrated over-voltage clamp, programmable dV/dt soft-start, fault output (FLG), and thermal shutdown. The package thermal resistance (theta_JA) is approximately 49 C/W on a standard JEDEC 2s2p board. The device uses a charge-pump gate driver to control an external N-channel blocking MOSFET for true reverse-current blocking (BFET_CTRL pin). The internal control loop combines current sensing, SOA-aware fold-back, and programmable blanking to distinguish real faults from benign transients such as load-step or hot-plug events. The 28 mOhm internal pass element minimizes conduction loss and on-chip heat, while the BFET driver offloads continuous reverse-current dissipation to the external FET. Typical applications include 5-V rail hot-swap protection in servers, SSDs and storage cards, USB Type-C VBUS protection, fan bay surveillance, and industrial PLC I/O protection. The wide SOA and adjustable ILIM make the part well suited to high-transient capacitive loads where conventional fuses would nuisance-trip. When using this part, select the external N-FET blocking MOSFET for Vds rating that comfortably exceeds the highest expected input surge, and size it for the continuous load current. Place the sense resistor or ILIM setting accurately, and follow the dV/dt capacitor recommendation to control inrush. Always honor the -40C to +85C operating junction temperature envelope. This page synthesizes distributor pricing, drop-in alternatives, and design considerations not found in the manufacturer datasheet alone - giving engineers a one-stop reference for sourcing and designing with the TPS259230DRCR.
TPS25940ARVCR - 18V 5A eFuse with True Reverse Blocking | TI
The Texas Instruments TPS25940ARVCR is a 2.7V to 18V, 42mΩ, 0.6A to 5.2A electronic fuse (eFuse) with true reverse-current blocking and DevSleep support, housed in a 20-pin WQFN (RVC) 4x3 mm package. The device integrates a low-Rdson N-channel FET, programmable current limit, and load-protection features, targeting SSD, USB Type-C, and hot-swap power paths. The 5.3A maximum load current and 42mΩ on-resistance minimize power dissipation during steady-state operation. Reverse-current blocking prevents current backflow when the output voltage exceeds the input, a critical feature for systems with multiple parallel power sources or battery-backed rails. DevSleep support enables very-low quiescent current in deep-sleep states, an essential characteristic for SSD power-management ICs and battery-powered portable equipment. An eFuse (electronic fuse) is a semiconductor protection device that combines the function of a traditional fuse, current-limiting circuit, and load switch into a single integrated circuit. It sits between a power source and a downstream load to provide inrush current limiting, overcurrent protection, short-circuit protection, reverse-current blocking, and often overvoltage/undervoltage protection. Unlike a one-time-use fuse, an eFuse can be reset by toggling its enable input. In the broader system hierarchy, an eFuse is a subcategory of hot-swap controller / power-distribution switch, which itself falls under power management IC and finally semiconductor device. Key features include 2.7V to 18V operating input range, 0.6A to 5.2A programmable current limit (set via external resistor), ±8% ILIM accuracy over temperature, integrated true reverse-current blocking, programmable inrush current slew rate via dVdt pin, fault output (FLT) pin for system monitoring, thermal shutdown, and an EN/UVLO pin for precise turn-on control. The device supports the SATA DevSleep specification, drawing microamp-level quiescent current during sleep to meet SSD power budgets. The TPS25940 family uses a charge-pump-driven N-channel MOSFET architecture with an integrated gate driver. The true reverse-current block comparator monitors VOUT versus VIN and disables the FET when VOUT > VIN, preventing discharge of downstream capacitance into the input rail. The DEVSLP pin activates a low-quiescent-current mode by disabling most internal circuits while keeping reverse-blocking monitoring active. The device operates from -40C to +85C ambient. Typical applications include NVMe/SATA SSD power rails, USB Type-C VBUS hot-swap protection, multi-port USB hubs, fan protection circuits, and any 5V/12V rail that requires inrush control and disconnect on fault. When designing with this eFuse, place the ILIM resistor close to the ILIM pin to minimize noise pickup, use a 1µF or larger input bulk capacitor to suppress voltage transients during hot-plug events, and observe absolute maximum VIN of 20V including transient ringing. The package's thermal pad must be soldered to a sufficiently large copper pour to handle steady-state I²R dissipation - at 5A continuous through 42mΩ, the part dissipates ~1.05W. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer product page.