My Inquiry
My Account
Texas Instruments TPS2372-4RGWT
- Part No.:
- TPS2372-4RGWT
- Manufacturer:
- Texas Instruments
- Category:
- Power Over Ethernet (PoE) Controllers
- Package:
- 20-VQFN Exposed Pad
- Datasheet:
-
TPS2372-4RGWT.pdf
- Description:
- IC POE CNTRL 1 CHANNEL 20VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:8,690
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS2372-4RGWT from Texas Instruments is a IEEE 802.3bt Type-4 PoE powered device (PD) interface IC with integrated 0.1-Ω hot-swap MOSFET, supporting up to 90 W input power, 2.2-A current limit, and automatic maintain power signature (MPS) generation for ultra-low standby operation in LED lighting and security camera systems.
For engineers reviewing the TPS2372-4RGWT datasheet, TPS2372-4RGWT pinout, TPS2372-4RGWT application, or TPS2372-4RGWT equivalent, key selection criteria include PoE++ (Type-4) compliance, autoclass support, programmable MPS duty cycle, inrush delay timing, and thermal shutdown behavior at 158°C junction temperature.
Technical Context
The TPS2372-4RGWT implements full IEEE 802.3bt Type-4 PD functionality including detection (1.4–10.1 V range), two-event hardware classification via CLSA/CLSB resistors, and inrush current limiting (335 mA typical). Its internal 0.1-Ω MOSFET enables high-efficiency power delivery up to 90 W at the PD input.
Automatic MPS operates with three selectable duty cycles (5.4%, 8.1%, 12.5%) set by RMPS_DUTY resistor, and dynamically adjusts for Type 1–2 vs. Type 3–4 PSEs. Autoclass is enabled via AUTCLS pin, allowing dynamic class renegotiation during startup per IEEE 802.3bt draft requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IEEE Standard Support | Compliant with IEEE 802.3bt Draft for Type-4 (90 W) PoE PD operation |
| Pass MOSFET RDS(on) | 0.1 Ω typical - enables ≥71.3 W delivered power over 100 m CAT5 cable |
| Current Limit | 2.2 A typical - supports continuous 90-W operation under worst-case thermal conditions |
| MPS Duty Cycle Options | Selectable 5.4% (Type 3–4), 8.1% (mid-range), or 12.5% (Type 1–2) via RMPS_DUTY resistor |
| Inrush Delay | 81.5 ms typical - ensures PSE inrush completion before PG assertion per IEEE 802.3bt timing |
| Operating Temperature | –40°C to +125°C junction - validated for industrial and outdoor security camera deployments |
| UVLO Thresholds | Rising: 38.1 V, Falling: 32.0 V - provides robust brown-out immunity across PoE voltage drop |
Pinout & Package
TPS2372-4RGWT is housed in a 20-pin VQFN package (5.00 mm × 5.00 mm) with exposed thermal pad connected to VSS for enhanced heat dissipation in high-power PoE applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | PoE input rail connection | Bypassed with 0.1 µF capacitor to VSS; supplies internal bias and gate drive |
| DEN | Detection enable input | 24.9 kΩ pull-up to VDD establishes IEEE-compliant detection signature; pulled to VSS disables MOSFET |
| CLSA / CLSB | Classification current programming outputs | Resistors to VSS set Class A/B signatures (e.g., 63.4 Ω = Class 4); define allocated PSE power level |
| RTN | Pass MOSFET drain return | High-current path from load back to controller; senses current for limit/foldback functions |
| AMPS_CTL | Automatic MPS amplitude control | Resistor to VSS programs MPS pulsed current (e.g., 1 kΩ → 24 V pulse amplitude) |
| MPS_DUTY | MPS duty cycle select input | Resistor to VSS selects 5.4% (open), 8.1% (~60.4 kΩ), or 12.5% (short) duty cycle |
| AUTCLS | Autoclass enable input | Pulled low to VSS during classification enables dynamic class renegotiation per IEEE 802.3bt |
| PG | Power Good output | Open-drain, active-high signal referenced to RTN; delays 81.5 ms after inrush completion |
| TPH / TPL / BT | PSE type indication outputs | Active-low open-drain signals indicating IEEE 802.3bt Type-3/4 identification and power allocation |
| IRSHDL_EN | Inrush delay enable | Internally pulled up; left open to enable 81.5-ms inrush delay; grounded to bypass |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 100-V Hotswap MOSFET | 0.1-Ω RDS(on) enables 90-W Type-4 PoE operation with <1.5 W conduction loss at 2.2 A |
| Automatic Maintain Power Signature (MPS) | Self-adjusting pulsed current generation eliminates external timer circuitry and reduces standby power to <1 mW |
| Autoclass Support | Enables dynamic class renegotiation during startup, allowing Type-4 PSEs to allocate full 90 W without manual configuration |
| Programmable Inrush Delay | Fixed 81.5-ms delay ensures strict compliance with IEEE 802.3bt inrush timing requirements before PG assertion |
| Robust Protection Suite | Includes thermal shutdown (158°C), current limit foldback, UVLO (38.1 V rising), and ESD ratings (±8 kV contact) |
Applications
| LED Lighting Systems | Security Cameras |
|---|---|
Use Scenario: High-bay LED luminaires powered over 100-m CAT6 cabling in smart building infrastructure. IC Role / Device Role / Timing Role: Primary PoE PD interface managing detection, classification, MPS, and PG signaling to downstream DC/DC converter. Use Value: Enables 90-W power delivery with automatic MPS for <100 µA standby current, extending luminaire sleep-mode duration without PSE disconnect. |
Use Scenario: Outdoor PTZ security cameras requiring reliable 90-W PoE++ power and thermal resilience in uncontrolled environments. IC Role / Device Role / Timing Role: Controls inrush, monitors RTN current for foldback, asserts BT/TPH to confirm Type-4 PSE handshake, and triggers thermal shutdown at 158°C. Use Value: Delivers full 90-W capability while maintaining safe junction temperature via low RDS(on) and exposed thermal pad layout. |
| Multi-band Access Points | Pass-through PoE Systems |
Use Scenario: Dual-band Wi-Fi 6E access points with integrated radios, RF front-end, and fanless enclosure requiring consolidated 90-W PoE feed. IC Role / Device Role / Timing Role: Provides autoclass-enabled classification to negotiate maximum power, then manages MPS duty cycle based on PSE type detected via TPH/TPH/TPH. Use Value: Eliminates need for external microcontroller-based class negotiation; reduces BOM count and firmware complexity. |
Use Scenario: Industrial Ethernet switches that accept PoE input and re-deliver it to downstream devices via secondary ports. IC Role / Device Role / Timing Role: Acts as upstream PD while enabling downstream PSE functionality; uses PG to synchronize converter enable with inrush completion. Use Value: Supports dual-role architecture with single-chip solution, reducing PCB area and interconnect complexity versus discrete PD+PSE designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PoE PD interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2372-3RGWT | Higher 0.3-Ω RDS(on), 1.85-A current limit, supports only up to 60 W Type-3 operation | Suitable for lower-power lighting or fixed-focus cameras where 90 W is unnecessary | Select when system power budget ≤60 W and thermal margin allows higher conduction loss |
| LT4295IUFD#PBF | Supports IEEE 802.3bt Type-4 but lacks autoclass and has fixed 7.5% MPS duty cycle | Requires external circuitry for dynamic class renegotiation and offers less flexible MPS tuning | Choose when autoclass is not required and design prioritizes Analog Devices' fault reporting architecture over TI's integrated PG/TPH/TPH/TPH signaling |
Compared with TPS2372-4RGWT, TPS2372-3RGWT delivers lower power with higher losses, while LT4295IUFD#PBF omits autoclass and offers less granular MPS control-making TPS2372-4RGWT optimal for full-featured, standards-compliant 90-W PoE++ endpoints.
Availability
TPS2372-4RGWT is available at Aetrix Electronics and suitable for LED lighting systems, security cameras, multi-band access points, and pass-through PoE systems requiring stable component supply across extended production lifecycles.
Supply support for TPS2372-4RGWT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in power management and interface solutions for industrial, automotive, and communications markets.
The TPS2372 product line delivers fully integrated IEEE 802.3bt-compliant PoE PD interfaces designed specifically for high-power, thermally constrained endpoints such as smart lighting and AI-enabled surveillance systems.
FAQ
What is the maximum continuous power supported by the TPS2372-4RGWT?
The TPS2372-4RGWT supports up to 90 W of continuous input power as a Type-4 powered device per IEEE 802.3bt, delivering approximately 71.3 W to the load over 100 m of CAT5 cable due to conductor losses. This is enabled by its 0.1-Ω internal MOSFET and 2.2-A current limit.
How does the TPS2372-4RGWT implement automatic MPS for ultra-low standby power?
The TPS2372-4RGWT generates automatic MPS pulses by monitoring RTN current; when load current drops below 18–38 mA, it activates AMPS_CTL to deliver programmable pulsed current. Duty cycle (5.4%, 8.1%, or 12.5%) is selected via RMPS_DUTY resistor, eliminating external timing components.
What is the function of the AUTCLS pin on the TPS2372-4RGWT?
The AUTCLS pin on the TPS2372-4RGWT enables IEEE 802.3bt autoclass functionality. When pulled low to VSS during the first classification event, it causes the device to present a Class 0 signature after tACS (~81.5 ms), signaling Type-3/4 PSEs that dynamic class renegotiation is supported.
Does the TPS2372-4RGWT require external components for inrush current limiting?
No, the TPS2372-4RGWT integrates inrush current limiting with a typical value of 335 mA and an 81.5-ms delay. The inrush termination threshold is factory-set at 90% of peak inrush, and no external components are needed unless custom timing or current thresholds are required via IRSHDL_EN or foldback configuration.
What package type and thermal characteristics apply to the TPS2372-4RGWT?
The TPS2372-4RGWT uses a 20-pin VQFN (RGW) package measuring 5.00 mm × 5.00 mm with an exposed thermal pad. Its junction-to-board thermal resistance is 16.1°C/W, and junction-to-ambient is 38.0°C/W - enabling reliable 90-W operation with standard 2-oz copper PCB layout and thermal vias to VSS.
TPS2372-4RGWT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-VQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Controller (PD)
- Number of Channels:
- 1
- Power - Max:
- 90 W
- Internal Switch(s):
- Yes
- Auxiliary Sense:
- No
- Standards:
- 802.3at (PoE+), 802.3bt
- Voltage - Supply:
- 0V ~ 57V
- Current - Supply:
- 550µA
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-VQFN (5x5)
TPS2372-4RGWT FAQ
1.How can I place an order for TPS2372-4RGWT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2372-4RGWT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS2372-4RGWT reliable?
The price and inventory of TPS2372-4RGWT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2372-4RGWT is usually 5 days.
3.What payment methods are accepted for TPS2372-4RGWT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2372-4RGWT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2372-4RGWT?
TPS2372-4RGWT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2372-4RGWT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS2372-4RGWT?
For technical support, including TPS2372-4RGWT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2372-4RGWT requirements.
6.How does Aetrix verify that TPS2372-4RGWT is sourced from the original manufacturer or authorized distributors?
All TPS2372-4RGWT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS2372-4RGWT meets industry standards.
7.What is the process for return or replacement of TPS2372-4RGWT?
All TPS2372-4RGWT units undergo pre-shipment inspection (PSI). If there is an issue with TPS2372-4RGWT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS2372-4RGWT part is unused and in its original packaging.
Return procedure for TPS2372-4RGWT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS2372-4RGWT Tags
-
TPS2378DDAR
Texas Instruments
-
TPS23753APWR
Texas Instruments
-
TPS23756PWPR
Texas Instruments
-
TPS23750PWPR
Texas Instruments
-
MP8007GV-Z
Monolithic Power Systems Inc.
-
TPS23861PWR
Texas Instruments
-
TPS23753PWR
Texas Instruments
-
PD69201ILD-TR
Microchip Technology
-
SI3402-B-GM
Skyworks Solutions Inc.
-
SI3402-B-GMR
Skyworks Solutions Inc.
-
SI34071-A01-GMR
Skyworks Solutions Inc.
-
SI3404-A-GMR
Skyworks Solutions Inc.
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
