1 Features

• 4V to 16V input voltage range

• 3.13V to 5.3V external VCC bias support

• 10mΩ and 3.3mΩ MOSFETs (VVCC = 3.3V)

• 20A continuous output current

• Optimized 19-pin WQFN-HR package for efficiency

and thermal performance

• ±1.0% reference (VREF) for TJ = –40°C to +125°C

• 0.5V to 5.5V output voltage range

• Differential remote sense

• D-CAP4 with ultra fast load-step response

• Supports all ceramic output capacitors

• Selectable auto-skip Eco-mode for high light-load

efficiency

• Programmable valley current limit

• 600kHz, 800kHz, 1.0MHz, 1.2MHz selectable

switching frequency:

• Programmable soft-start time

• Prebiased start-up capability

• Open-drain power-good output

• Overvoltage and undervoltage fault protection

• 3mm × 3mm (0.4mm pin pitch), 19-pin QFN

package

• Pin-to-pin compatible with 12A TPS548A23 and

6A TPS548623

2 Applications

• Rack server and blade server

• Data center switches

3 Description

The TPS548B23 device is a small, high-efficiency,

synchronous buck converter with an adaptive ontime

D-CAP4 control mode. The control method

provides low minimum on-time and fast load-transient

response across the entire output voltage range

without requiring an external compensation network.

Because external compensation is not required, the

device is easy to use and requires few external

components. The device is well-designed for spaceconstrained

data center applications.

The TPS548B23 device has differential remote

sense, high-performance integrated MOSFETs, and

an accurate ±1.0% internal reference. The device

features accurate load and line regulation and Ecomode

or Forced Continous Conduction Mode (FCCM)

operation. Pinstrap options allow for configuration

of the overcurrent limit, fault response, internal or

external feedback , output voltage selection, switching

frequency, and soft-start time..

The internal 3.0V LDO can be over-driven with an

external 3.3V to 5V supply through the VCC pin to

improve efficiency and reduce power dissipation.

The TPS548B23 device is a lead-free device. The

device is RoHS compliant without exemption.