1 Features

1• 4.5-V to 28-V input voltage range

• 0.6-V to 13-V output voltage range

• 6-A maximum continuous output current

• Integrated 26-mΩ and 12-mΩ MOSFETs

• 0.6-V ±1% Reference Voltage

• D-CAP3™ control mode for fast transient

response

• Eco-mode™ and FCCM (forced continuous

conduction mode) selectable for light-load

operation through MODE pin

• Internal 2-ms soft start

• Built-in output discharge function

• 500-kHz switching frequency

• Power good indicator to monitor output voltage

• Cycle by cycle over current limit

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

UVLO

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

• Small 10-Pin 3.0-mm × 3.0-mm HotRod™ QFN

Package

• Available in WEBENCH® Power Designer to

create custom designs

2 Applications

• Enterprise systems: multifunction printers, storage

• Personal electronics: TVs, speakers, set-top box,

portable electronics

• Industrial applications: electronic point of sale,

factory automation and control, motor drives

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

supply

3 Description

The TPS56637 is a high efficiency, high-voltage

input, easy-to-use synchronous buck converter with

integrated MOSFETs.

With the wide operating input voltage range of 4.5 V

to 28 V, the TPS56637 is ideally suited for systems

powered from 12-V, 19-V, 24-V power-bus rails. It

supports up to 6-A continuous output current at

output voltages between 0.6 V and 13 V.

The TPS56637 uses DCAP3™ 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 such as POSCAP and MLCC.

The TPS56637 has both FCCM and Eco-mode™

operation modes for selection at light-load condition

through configuration of MODE pin. To attain high

efficiency at light load, Eco-mode™ could be

selected. To support tight output voltage ripple

requirement, FCCM could be selected.

The TPS56637 provides complete non-latched OV

(Over-voltage), UV (Under-voltage), OC (Overcurrent),

OT (Over-temperature) and UVLO (Undervoltage

lock-out) protections combined with power

good indicator and output discharge function features.

The TPS56637 is available in a 10-pin 3.0-mm x 3.0-

mm HotRod™ QFN package and the junction

temperature is specified from –40°C to 150°C.