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Texas Instruments LM251772 | Demoboard LM251772EVM-PD
36V-VIN four-switch buck-boost controller with I²C for USB-PD sourcing
Overview
| Topology | Buck-Boost Converter |
| Input voltage | 9-36 V |
| Switching frequency | 100-600 kHz |
| Output 1 | 48 V / 5 A |
| Output 2 | 28 V / 5 A |
| IC revision | March 2025 |
Description
The LM251772EVM-PD demonstrates a flexible high-power buck-boost design using the LM251772. The evaluation module (EVM) is configured to operate from an input voltage range of 9V to 36V and to produce a regulated 5V to 48V output with up to a 5A load current. The EVM operates with a switching frequency of 320kHz. Most of the device settings are easily adjusted or set through jumpers, like: operation mode (PSM or fPWM), bias supply, and external clock synchronization.
Features
Input voltage range: 9V to 36VOutput voltage 5V to 48V (5V default, adjustable 5V to 48V) with up to 5A (240W)High efficiency, synchronous buck-boost conversionEasy access to configuration featuresFlexible design using standard MOSFETs
Typical applications
- Industrial PC and rugged PC
- DC/DC Modules
- Wireless charging
- USB Type-C® power delivery – Docking station, PC monitor, Desktop PC
More information
Products
Order Code | Datasheet | Downloads | Status | Product series | Pins | Type | Mount | L(mm) | IR(A) | Working Voltage(V (AC)) | Operating Temperature | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WR-PHD Pin Header - Single, 2, Straight | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | Pins2 | TypeStraight | MountTHT | Length5.08 mm | Rated Current3 A | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | |||
 | WR-PHD Pin Header - Single, 3, Straight | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | Pins3 | TypeStraight | MountTHT | Length7.62 mm | Rated Current3 A | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | |||
 | WR-PHD Pin Header - Single, 5, Straight | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | Pins5 | TypeStraight | MountTHT | Length12.7 mm | Rated Current3 A | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | |||
 | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | Pins6 | TypeStraight | MountTHT | Length15.24 mm | Rated Current3 A | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C |