Overview
The TPS23751PWP is a 16-pin integrated circuit designed by Texas Instruments, combining a Power-over-Ethernet (PoE) powered device (PD) interface and a current-mode DC-DC controller. This device is optimized for applications that require high efficiency over a wide load range. It implements type-2 hardware classification per IEEE 802.3at and includes features such as an auxiliary power detect (APD) input and a disable function (DEN). The DC-DC controller is equipped with internal soft-start, a bootstrap startup current source, and current-mode control with slope compensation, blanking, and current limiting to enhance efficiency at light loads.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 16-TSSOP (0.173", 4.40mm Width) Exposed Pad |
| Pins | 16 |
| Operating Temperature Range (°C) | -40 to 85 |
| Power - Max | 25.5 W |
| Internal Switch(s) | Yes |
| Auxiliary Sense | Yes |
| Standards | 802.3at (PoE+), 802.3af (PoE) |
| Voltage - Supply | 0 V ~ 57 V |
| Current - Supply | 1.8 mA |
| Junction Temperature Range (°C) | -40 to 125 |
Key Features
- IEEE 802.3at Classification With Status Flag
- High Efficiency Solutions Over Wide Load Range
- Powers Up to 25.5 W PDs
- Robust 100 V, 0.5 Ω Hotswap MOSFET
- Synchronous Rectifier Disable Signal
- PowerPAD™ TSSOP Packages
- Complete PoE Interface Plus DC-DC Controller
- Adapter ORing Support
- Programmable Frequency
- –40°C to 125°C Junction Temperature Range
Applications
- IEEE 802.3at-Compliant Devices
- Video and VoIP Telephones
- Multiband Access Points
- Security Cameras
- Pico-Base Stations
Q & A
- What is the TPS23751PWP used for? The TPS23751PWP is used as a Power-over-Ethernet (PoE) powered device (PD) interface and a current-mode DC-DC controller, optimized for high efficiency over a wide load range.
- What standards does the TPS23751PWP comply with? The TPS23751PWP complies with IEEE 802.3at (PoE+) and IEEE 802.3af (PoE) standards.
- What is the maximum power output of the TPS23751PWP? The maximum power output of the TPS23751PWP is 25.5 W.
- What is the operating temperature range of the TPS23751PWP? The operating temperature range is -40°C to 85°C, with a junction temperature range of -40°C to 125°C.
- Does the TPS23751PWP have internal switches? Yes, the TPS23751PWP has internal switches.
- What type of package does the TPS23751PWP come in? The TPS23751PWP comes in a 16-TSSOP (0.173", 4.40mm Width) Exposed Pad package.
- What are some of the key features of the TPS23751PWP? Key features include IEEE 802.3at classification, high efficiency solutions, robust 100 V, 0.5 Ω hotswap MOSFET, and programmable frequency.
- What applications is the TPS23751PWP suitable for? The TPS23751PWP is suitable for IEEE 802.3at-compliant devices, video and VoIP telephones, multiband access points, security cameras, and pico-base stations.
- Does the TPS23751PWP support sleep modes? The TPS23751 itself does not support sleep modes, but the TPS23752, an extended version, does support ultra-low power sleep modes.
- How does the TPS23751PWP enhance efficiency at light loads? Efficiency is enhanced at light loads by disabling synchronous rectification and entering variable frequency operation (VFO).
