Overview
The TPS23754PWP-1, produced by Texas Instruments, is a highly integrated IEEE 802.3at Power over Ethernet (PoE) interface and isolated converter controller. This device is designed to support high-efficiency topologies and is particularly suited for powered devices (PDs) that require up to 30 watts of input power. The TPS23754PWP-1 combines a PoE interface with a current-mode DC-DC controller, making it an ideal solution for isolated converter applications.
Key Specifications
| Parameter | Description | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage Range | 24 V to 60 V | 24 | - | 60 | V |
| Output Power | Up to 30 W | - | - | 30 | W |
| Junction Temperature Range | -40°C to 125°C | -40 | - | 125 | °C |
| Package Type | HTSSOP (PWP) | - | - | - | - |
| Number of Pins | 20 | - | - | - | - |
| Hotswap MOSFET On Resistance | 0.25 to 0.75 Ω | 0.25 | 0.43 | 0.75 | Ω |
| Maximum Duty Cycle | Up to 78% | - | - | 78% | % |
Key Features
- IEEE 802.3at Compliance: Supports the IEEE 802.3at standard for high-power PoE applications.
- DC-DC Control: Optimized for isolated converters with features like programmable frequency, synchronization, and internal soft start.
- Input Voltage ORing: Supports multiple input voltage ORing options including highest voltage, external adapter preference, and PoE preference.
- Enhanced Classification: Features extended hardware classification necessary for compatibility with high-power midspan power sourcing equipment (PSE).
- Robust Hotswap MOSFET: A 100-V, 0.5-Ω hotswap MOSFET for reliable power management.
- Programmable Gate Drivers: Two complementary gate drivers with programmable dead time for efficient converter topologies.
- Thermal Shutdown: Thermal shutdown protection with a turnoff temperature range of 135°C to 155°C.
Applications
- Power over Ethernet (PoE) Devices: Ideal for powered devices requiring up to 30 watts of power.
- Isolated Converter Systems: Suitable for various isolated converter topologies, including active-clamp forward converters and flyback topologies.
- Building Automation: Can be used in 24 VAC building power applications.
- Industrial and Commercial Power Supplies: Applicable in high-efficiency power supply designs where isolated converters are necessary.
Q & A
- What is the maximum input power supported by the TPS23754PWP-1?
The TPS23754PWP-1 supports up to 30 watts of input power.
- What is the operating temperature range of the TPS23754PWP-1?
The operating temperature range is -40°C to 125°C.
- What package type is the TPS23754PWP-1 available in?
The device is available in a 20-pin HTSSOP (PWP) package.
- Does the TPS23754PWP-1 support IEEE 802.3at?
Yes, it is compliant with the IEEE 802.3at standard.
- What are the key features of the DC-DC controller in the TPS23754PWP-1?
The DC-DC controller features programmable frequency, synchronization, internal soft start, and programmable gate drivers.
- How does the input voltage ORing work in the TPS23754PWP-1?
The device supports multiple input voltage ORing options, including highest voltage, external adapter preference, and PoE preference.
- What is the purpose of the hotswap MOSFET in the TPS23754PWP-1?
The hotswap MOSFET is a 100-V, 0.5-Ω device that ensures reliable power management during hotswap operations.
- Can the classification in the TPS23754PWP-1 be programmed?
Yes, the classification can be programmed to any of the defined types using a single resistor.
- What is the maximum duty cycle of the TPS23754PWP-1?
The maximum duty cycle is up to 78%.
- Does the TPS23754PWP-1 have thermal shutdown protection?
Yes, it has thermal shutdown protection with a turnoff temperature range of 135°C to 155°C.
