My Inquiry
My Account
Texas Instruments TPS23752PWP
- Part No.:
- TPS23752PWP
- Manufacturer:
- Texas Instruments
- Category:
- Power Over Ethernet (PoE) Controllers
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS23752PWP.pdf
- Description:
- IC POE CNTRL 1 CHANNEL 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:918
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS23752PWP from Texas Instruments is a 20-pin IEEE 802.3at Type 2 Power over Ethernet (PoE) powered device (PD) interface with integrated flyback DC-DC controller. It delivers up to 25.5 W, features a 100 V / 0.45 Ω internal hot-swap MOSFET, supports ultra-low-power Sleep Mode with Maintain Power Signature (MPS), and operates across –40°C to 125°C junction temperature.
For engineers reviewing the TPS23752PWP datasheet, TPS23752PWP pinout, TPS23752PWP application, or TPS23752PWP equivalent, this device is selected for PoE-powered endpoints requiring robust classification, inrush control, synchronous rectifier disable, programmable frequency, and sleep-mode power management in space-constrained TSSOP-20 layouts.
Technical Context
The TPS23752PWP integrates dual functional blocks: an IEEE 802.3at-compliant PoE PD interface (detection, classification, Type 2 hardware classification, APD input, T2P flag) and a current-mode flyback DC-DC controller with slope-compensated PWM, variable-frequency operation (VFO) at light loads, and internal soft-start. Its Sleep Mode disables converter switching while sustaining MPS via pulsed LED drive.
Sleep Mode activation requires SLPb low and MODE configuration; wake-up is triggered by WAKE pin assertion. The controller uses ARTN as analog ground reference, separates RTN (MOSFET drain) from VSS (system ground), and provides dedicated pins for synchronous rectifier disable (SRD), threshold control (SRT), and gate drive (GATE) - all optimized for isolated flyback topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IEEE Standard | Complies with IEEE 802.3at Type 2 for detection, classification, and MPS - enables interoperability with 25.5 W PSEs. |
| Max Continuous Output Power | 25.5 W - supports high-power PDs such as PTZ cameras and dual-band access points without external boost stages. |
| rDS(on) | 0.45 Ω typical - minimizes conduction loss and thermal rise in the integrated 100 V hot-swap MOSFET. |
| Sleep Mode Supply Current | 1.0 mA typical - sustains MPS with minimal quiescent draw during low-power standby states. |
| Switching Frequency Range | 105–276 kHz (PWM/VFO) - programmable via RT resistor; enables EMI optimization and transformer size reduction. |
| Junction Temperature Range | –40°C to +125°C - qualified for industrial and outdoor PoE endpoint deployments including security infrastructure. |
| MPS Duty Cycle | 28.9% typical - meets IEEE 802.3at maintain power signature timing requirements in Sleep Mode. |
Pinout & Package
TPS23752PWP is housed in a thermally enhanced PowerPAD™ TSSOP-20 package (6.50 mm × 4.40 mm), with the exposed thermal pad electrically connected to VSS for PCB-level heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | PoE input supply rail | Accepts 36–57 V PoE input; bypassed to VSS with 0.1 µF capacitor for noise filtering. |
| DEN | Detection/enable control | Pull to VSS to disable pass MOSFET; 24.9 kΩ to VDD enables detection mode. |
| CLS | Classification current source | Drives external RCLS to generate IEEE 802.3at Class 0–4 signature (e.g., 1270 Ω = Class 1). |
| APD | Auxiliary power detect | Rising >1.5 V above ARTN disables MOSFET and forces T2P active - enables auxiliary power switchover. |
| RT | Oscillator timing | Resistor to ARTN sets PWM frequency (e.g., 34 kΩ → 251 kHz); enables EMI tuning. |
| T2P | Type 2 PSE indicator | Active-low open-drain output confirms Type 2 PSE handshake completion after classification. |
| SRD | Synchronous rectifier disable | Asserts low in VFO mode to disable external SRs - prevents shoot-through during light-load burst mode. |
| CTL | PWM control loop input | Feedback node for voltage regulation; threshold (2.00 V) triggers transition from PWM to VFO mode. |
| VSS | Negative PoE rail return | System ground reference; must connect to PowerPAD™ thermal pad for thermal and electrical integrity. |
| ARTN | Analog return for DC-DC section | Local ground for controller bias, CS, VC, VB - must tie to RTN but routed separately from noisy digital grounds. |
| RTN | Pass MOSFET drain terminal | Output node of integrated hot-swap switch; connects to primary-side transformer winding and ARTN. |
| GATE | External MOSFET driver | High-current (1.0 A sink / 0.6 A source) gate drive for external flyback switch - supports fast switching. |
| VC | GATE drive supply | 12.8 V regulated output (TPS23752 only) for bootstrap gate drive; bypassed with ≥0.47 µF to ARTN. |
| CS | Current sense input | ARTN-referenced input for primary-side current sensing; 0.25 V threshold enables cycle-by-cycle limiting. |
| VB | Bias supply output | 5.0 V ±2.5% regulated supply for internal logic and external circuitry; min 0.08 µF bypass required. |
| SRT | VFO/PWM transition threshold | Adjusts CTL threshold (1.5–2.35 V) to fine-tune light-load efficiency vs. regulation trade-off. |
| SLPb | Sleep Mode enable | Low-active input; falling edge initiates Sleep Mode while maintaining MPS via MODE-controlled LED pulsing. |
| MODE | MPS configuration | Selects pulsed (VMODE = 0 V) or DC (VMODE = VB) MPS mode; also controls LED behavior in normal operation. |
| WAKE | Sleep Mode exit trigger | Pull low to resume full DC-DC operation; internal 5.33 kΩ pull-up ensures default wake state. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low-Power Sleep Mode | Reduces supply current to 1 mA while sustaining IEEE 802.3at MPS - extends battery backup time or enables fanless thermal design. |
| Integrated 100 V / 0.45 Ω Hot-Swap MOSFET | Eliminates external high-voltage switch and associated gate drive complexity - simplifies BOM and layout for PoE PDs. |
| Programmable Switching Frequency | 226–276 kHz (PWM) and 105–165 kHz (VFO) set via single RT resistor - balances efficiency, transformer size, and EMI compliance. |
| Synchronous Rectifier Disable (SRD) | Automatically disables external synchronous rectifiers during VFO operation - prevents reverse conduction losses and improves light-load efficiency. |
| Robust Protection Suite | Includes thermal shutdown (145°C), foldback current limiting, inrush control, and 8 kV/15 kV system-level ESD - ensures field reliability in harsh environments. |
| Adapter ORing Support | APD input enables seamless switchover between PoE and auxiliary DC sources - critical for failover-capable endpoints like VoIP phones. |
Applications
| Video Security Camera | VoIP Telephone |
|---|---|
Use Scenario: Outdoor PTZ camera with IR illumination, heater, and motorized pan/tilt requiring continuous 25 W PoE power and low-power idle state. IC Role / Device Role / Timing Role: TPS23752PWP serves as the primary PoE PD interface and flyback controller, managing classification, inrush, MPS maintenance, and DC-DC conversion. Use Value: Sleep Mode reduces standby consumption to <1.5 mA while preserving network presence - extends UPS runtime and eliminates local AC adapters. |
Use Scenario: Enterprise VoIP phone with LCD display, speakerphone, and Bluetooth module operating from PoE infrastructure. IC Role / Device Role / Timing Role: TPS23752PWP implements IEEE 802.3at Type 2 PD functionality and powers the system via isolated flyback, with APD enabling local USB-C backup. Use Value: Integrated 100 V MOSFET and programmable frequency simplify compliance testing and reduce bill-of-materials cost by 3+ components. |
| Wi-Fi 6 Access Point | Industrial IoT Gateway |
Use Scenario: Dual-band 802.11ax AP with four spatial streams, PoE+ powered, deployed in ceiling-mounted enclosures with limited airflow. IC Role / Device Role / Timing Role: TPS23752PWP handles PoE negotiation and supplies regulated 12 V/5 V rails to RF and baseband subsystems via flyback topology. Use Value: Thermal PAD and 38.5°C/W RθJA enable operation at 125°C junction without heatsinks - supports compact, sealed enclosure designs. |
Use Scenario: DIN-rail mounted gateway aggregating Modbus, CAN, and LoRa sensors, powered exclusively via PoE in factory settings. IC Role / Device Role / Timing Role: TPS23752PWP acts as the sole power entry interface, providing isolation, surge protection coordination, and stable 3.3 V/5 V outputs. Use Value: 8 kV contact / 15 kV air ESD rating on RJ-45 side and robust foldback current limiting ensure uptime in electrically noisy industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PoE PD interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS23751PWP | 16-pin TSSOP; lacks Sleep Mode, SLPb, MODE, WAKE, and pulsed MPS circuitry; VC not regulated in sleep. | Supports only active-mode PoE PDs; cannot sustain MPS during low-power standby - unsuitable for battery-backed or fanless systems. | Select when Sleep Mode is unnecessary and board space is constrained; verify thermal design for continuous 25.5 W operation. |
| LT4275AIMSE#PBF | 16-pin MSOP; IEEE 802.3at Type 2 compliant; no integrated DC-DC controller - requires external flyback IC or transformer driver. | Used where discrete power architecture is preferred; offers higher accuracy classification and faster T2P response but increases component count. | Choose when system-level flexibility outweighs integration benefits - e.g., multi-output or non-flyback topologies. |
Compared with TPS23751PWP, the TPS23752PWP adds Sleep Mode capability and extended pin count for MPS control, making it essential for energy-conscious PoE endpoints. Against LT4275AIMSE#PBF, it trades external design freedom for reduced BOM and simplified layout - ideal for cost- and space-sensitive single-output flyback implementations.
Availability
TPS23752PWP is available at Aetrix Electronics and suitable for video security cameras, VoIP telephones, Wi-Fi 6 access points, and industrial IoT gateways requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS23752PWP 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 leader delivering analog, embedded processing, and connectivity solutions with broad industrial, automotive, and communications reach.
The TPS2375x product line was designed specifically for IEEE 802.3at-compliant PoE powered devices, integrating detection, classification, DC-DC control, and protection into single-package solutions for streamlined endpoint development.
FAQ
What is the maximum continuous current supported by the TPS23752PWP internal MOSFET?
The TPS23752PWP internal MOSFET supports a maximum continuous RTN current of 825 mA at TJ ≤ 125°C, with a typical rDS(on) of 0.45 Ω. This enables reliable delivery of up to 25.5 W to the downstream DC-DC stage under full-load conditions while maintaining thermal safety margins in standard PCB layouts.
How does the TPS23752PWP enter and exit Sleep Mode?
The TPS23752PWP enters Sleep Mode when the SLPb pin is pulled low; it exits Sleep Mode when the WAKE pin is asserted low. During Sleep Mode, the DC-DC converter is disabled but the Maintain Power Signature (MPS) remains active via pulsed LED drive controlled by the MODE pin - ensuring IEEE 802.3at compliance without full-system power-up.
Can the TPS23752PWP operate with both PoE and auxiliary power sources?
Yes - the TPS23752PWP supports adapter ORing via its APD (Auxiliary Power Detect) pin. When APD rises >1.5 V above ARTN, the internal MOSFET disables, CLS deactivates, and T2P asserts, allowing seamless switchover to an external DC source. This feature is confirmed in the datasheet's Functional Block Diagram and Pin Description sections.
What is the purpose of the ARTN pin, and how should it be routed?
The ARTN pin serves as the dedicated analog ground return for the DC-DC controller section (CS, VC, VB, GATE, SRT). It must be tied to RTN but routed on a clean local ground plane beneath the flyback transformer and primary-side components - separate from noisy digital or power grounds - to prevent control-loop instability and ensure accurate current sensing.
Does the TPS23752PWP require external components for IEEE 802.3at classification?
Yes - classification is implemented using an external resistor (RCLS) connected between the CLS pin and VSS. The value of RCLS determines the IEEE 802.3at Class (e.g., 1270 Ω = Class 1, 243 Ω = Class 3). The TPS23752PWP applies ~2.5 V across RCLS during classification, and this configuration is validated in the datasheet's Pin Functions and Electrical Characteristics tables.
TPS23752PWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Controller (PD), DC/DC
- Number of Channels:
- 1
- Power - Max:
- 25.5 W
- Internal Switch(s):
- Yes
- Auxiliary Sense:
- Yes
- Standards:
- 802.3at (PoE+), 802.3af (PoE)
- Voltage - Supply:
- 0V ~ 57V
- Current - Supply:
- 1.8mA
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS23752PWP FAQ
1.How can I place an order for TPS23752PWP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS23752PWP 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 TPS23752PWP reliable?
The price and inventory of TPS23752PWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS23752PWP is usually 5 days.
3.What payment methods are accepted for TPS23752PWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS23752PWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS23752PWP?
TPS23752PWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS23752PWP 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 TPS23752PWP?
For technical support, including TPS23752PWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS23752PWP requirements.
6.How does Aetrix verify that TPS23752PWP is sourced from the original manufacturer or authorized distributors?
All TPS23752PWP 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 TPS23752PWP meets industry standards.
7.What is the process for return or replacement of TPS23752PWP?
All TPS23752PWP units undergo pre-shipment inspection (PSI). If there is an issue with TPS23752PWP, 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 TPS23752PWP part is unused and in its original packaging.
Return procedure for TPS23752PWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS23752PWP 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…
