Overview
The TPS23754PWPR-1 from Texas Instruments is a highly integrated Power over Ethernet (PoE) controller and DC/DC converter, designed to optimize power management in various applications. This device combines a PoE powered-device (PD) interface with a current-mode DC/DC controller, making it ideal for isolated converter topologies. It supports both IEEE 802.3at (PoE+) and 802.3af (PoE) standards, ensuring compatibility with high-power midspan power sourcing equipment (PSE).
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | TPS23754PWPR-1 |
| Package Type | HTSSOP (PWP) 20-pin |
| Input Voltage Range | 0V to 57V |
| Maximum Output Power | 30 W |
| Supply Current | 920 µA |
| Operating Temperature Range | -40°C to 125°C |
| PoE Standards Supported | IEEE 802.3at Type 1 (802.3af), IEEE 802.3at Type 2 |
| PoE Current Limit (Min) | 850 mA |
| PoE Inrush Limit (Typ) | 140 mA |
| Switching Frequency | Programmable, Synchronizable |
Key Features
- Integrated PoE PD interface and PWM controller optimized for isolated converters.
- Supports both IEEE 802.3at (PoE+) and 802.3af (PoE) standards.
- Input voltage ORing options including highest voltage, external adapter preference, and PoE preference.
- Enhanced classification per IEEE 802.3at with status flag.
- Programmable frequency with synchronization.
- Robust 100-V, 0.5-Ω hotswap MOSFET.
- Internal soft start, bootstrap start-up source, current-mode compensation, and a 78% maximum duty cycle.
- Thermal shutdown and second gate drive features.
Applications
The TPS23754PWPR-1 is suitable for a wide range of high-power applications, including:
- Network devices such as switches, routers, and access points.
- IP phones and video phones.
- Wireless access points and base stations.
- Security cameras and other surveillance equipment.
- Industrial control systems and automation equipment.
Q & A
- What is the maximum output power of the TPS23754PWPR-1?
The maximum output power is up to 30 W.
- What PoE standards does the TPS23754PWPR-1 support?
The device supports both IEEE 802.3at (PoE+) and 802.3af (PoE) standards.
- What is the input voltage range of the TPS23754PWPR-1?
The input voltage range is from 0V to 57V.
- What is the operating temperature range of the TPS23754PWPR-1?
The operating temperature range is from -40°C to 125°C.
- Does the TPS23754PWPR-1 support programmable frequency?
Yes, the device supports programmable and synchronizable frequency.
- What type of package does the TPS23754PWPR-1 come in?
The device comes in a 20-pin HTSSOP (PWP) package.
- What are the key features of the TPS23754PWPR-1's DC-DC controller?
The DC-DC controller features internal soft start, bootstrap start-up source, current-mode compensation, and a 78% maximum duty cycle. It also includes two complementary gate drivers with programmable dead time.
- Does the TPS23754PWPR-1 have thermal shutdown protection?
Yes, the device includes thermal shutdown protection.
- Can the TPS23754PWPR-1 be used in high-power midspan power sourcing equipment (PSE)?
Yes, the device supports extended hardware classification necessary for compatibility with high-power midspan PSE per IEEE 802.3at.
- What is the purpose of the input voltage ORing options in the TPS23754PWPR-1?
The input voltage ORing options allow the designer to determine which power source will carry the load under all conditions, including highest voltage, external adapter preference, and PoE preference.
