Basic Product Information
Part Number: TPS23751PWPR
Core Electrical Parameters
| Parameter |
Value |
Unit |
| PoE Standards Supported |
IEEE 802.3at Type 1 (af) & Type 2 |
– |
| PD Power Level |
13W (Type 1) / 25.5W (Type 2) |
W |
| Input Voltage Range (Vin) |
9.2 to 57 |
V |
| PoE Current Limit (min) |
850 |
mA |
| PoE Inrush Current (typ) |
140 |
mA |
| Internal MOSFET Rds(on) |
0.5 (typ) |
Ω |
| Internal MOSFET Voltage Rating |
100 |
V |
| DC-DC Topology |
Current-Mode Flyback |
– |
| Maximum Duty Cycle (typ) |
80 |
% |
| Max Operating Frequency (typ) |
251 |
kHz |
| UVLO Turn-On Threshold |
38.1 |
V |
| UVLO Turn-Off Threshold |
32 |
V |
| Fault Response |
Auto Retry |
– |
| Operating Temperature |
-40 to +85 |
°C |
| Thermal Shutdown |
Yes |
– |
| Adapter ORing / APD |
Yes (Primary-side adapter priority) |
– |
| Synchronous Rectifier Disable |
Yes |
– |
Core Features & Advantages
The TPS23751PWPR delivers a complete Power-over-Ethernet powered device solution by integrating both the PoE PD interface and a current-mode flyback DC-DC controller into a single 16-pin HTSSOP package.
- Primary Function: Combined IEEE 802.3at-compliant PD interface and high-efficiency flyback DC-DC controller for PoE-powered devices up to 25.5W.
- Advantages:
- Integrated 0.5-Ω 100-V Hotswap MOSFET minimizes external component count and heat dissipation while maximizing power utilization for compact PD designs.
- Wide-load-range efficiency achieved through variable frequency operation (VFO) and synchronous rectifier disable at light loads, significantly reducing no-load power consumption.
- Primary-side adapter priority (APD) with auxiliary power detect input enables seamless ORing between PoE and local adapter power sources without external circuitry.
Typical Application Scenarios
- Industry: Industrial Networking / Enterprise / IoT
- Equipment: VoIP phones, wireless access points, security cameras, IoT gateways
- Use Cases:
- IEEE 802.3at Class 4 PoE-powered IP security cameras requiring up to 25.5W with isolated flyback conversion.
- Enterprise Wi-Fi 6 access points using PoE as primary power with wall-adapter fallback via APD ORing.
- Industrial IoT edge controllers needing compact, high-efficiency PoE power with minimal external BOM.
Market Reference Price
| Market |
Price Range |
Currency |
| Huaqiangbei Spot |
$1.20 – $2.00 |
USD |
| Overseas B2B |
$0.79 – $1.77 |
USD |
Related Models Comparison
| Model |
Difference |
Application |
| TPS23752PWP |
Extended 20-pin version with Sleep Mode for ultra-low standby power while maintaining IEEE 802.3at MPS |
Energy-efficient PDs with night/sleep modes |
| TPS23750PWP |
IEEE 802.3af (Type 1 only, 13W max), no Type 2 classification support |
Lower-power PoE PDs up to 13W |
| TPS2375-1PWR |
8-pin PD controller only (no DC-DC), Class 3 (af) with auto-retry |
Simple PoE PD front-end with external converter |
