1 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

• TPS56837H supports 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

2 Applications

• USB Power Supplies with PD

• Industrial PC, EPOS, factory automation and

control

• Multifunction printers, video conference system

• Monitors, TV, speakers, PC and notebooks,

portable electronics

• General purposes for 12V,19V, 24V power-bus

supply

3 Description

The TPS56837H and TPS56837HA are highefficiency,

easy-to-use, synchronous buck converters

with wide input voltage range of 4.5V to 28V. The

devices support up to 8A continuous output current at

output voltages between 4V and 22V, and support 5V,

9V, 15V, 20V dynamic output change for USB Power

Delivery (USB PD) application.

The TPS56837H and TPS56837HA use D-CAP3

control mode to provide fast transient response, good

line and load regulation, no requirement for external

compensation, and support low equivalent series

resistance (ESR) output capacitors like MLCC.

The TPS56837H and TPS56837HA operate at Ecomode

to attain high efficiency at light load with fixed

500kHz switching frequency and three selectable

current limit through MODE pin configuration. The

TPS56837H and TPS56837HA have adjustable softstart

time by the SS pin capacitor configuration.

The TPS56837H and TPS56837HA provide complete

non-latched OV, UV, OC, OT, and UVLO protections

combined with power-good indicator features.

TPS56837H supports output discharge function and

TPS56837HA disables the function.

The TPS56837H and TPS56837HA are available in a

10-pin, 3.0mm × 3.0mm, HotRod QFN package, and

the junction temperature is specified from –40°C to

150°C.