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.