TPS56837H数据手册TI中文资料规格书

描述 Description

The TPS56837H is a high-efficiency, easy-to-use, synchronous buck converter with a wide input voltage range of 4.5V to 28V. The device supports up to 8A continuous output current at output voltages between 4V and 22V, and supports 5V, 9V, 15V, 20V dynamic output change for USB Power Delivery (USB PD) application.

The TPS56837H uses D-CAP3 control mode to provide fast transient response, good line and load regulation, no requirement for external compensation, and supports low equivalent series resistance (ESR) output capacitors like MLCC.

The TPS56837H operates at Eco-mode to attain high efficiency at light load with fixed 500kHz switching frequency and three selectable current limit through MODE pin configuration. The TPS56837H has adjustable soft-start time by the SS pin capacitor configuration.

The TPS56837H provides complete non-latched OV (overvoltage), UV (undervoltage), OC (overcurrent), OT (overtemperature), and UVLO (undervoltage lockout) protections combined with power-good indicator and output discharge function features.

The TPS56837H is available in a 10-pin, 3.0mm × 3.0mm, HotRod QFN package, and the junction temperature is specified from –40°C to 150°C.

特性 Features

Support for USB power delivery (USB PD)

4.5V to 28V input voltage range

4V to 22V output voltage range

Supports 8A continuous output current

Three adjustable cycle-by-cycle over current limit for low-side MOSFET by mode selection



High efficiency over entire load range

Integrated 20.4mΩ and 9.5mΩ MOSFETs

45uA low quiescent current

Fixed 500kHz switching frequency

98.7% efficiency at VIN = 24V, VOUT = 20V and IOUT = 3A

Eco-mode for high light-load efficiency



0.6V ±1% reference voltage at 25°C

D-CAP3™ control mode for fast transient response

Adjustable soft-start time by SS capacitor

Built-in output discharge function

Power-good indicator to monitor output voltage

Supports up to 98% duty operation

Non-latched protections for UV, OV, OT, and UVLO

–40°C to +150°C operating junction temperature

Small 10-pin 3.0mm × 3.0mm HotRod™QFN Package

Pin-to-pin compatible with 6A TPS56637 and 8A TPS56837