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TPS548B23
  • TPS548B23
  • TPS548B23

TPS548B23

ACTIVE

4V to 16V, 20A synchronous step-down converter

Texas Instruments TPS548B23 Product Info

1 April 2026 3

Parameters

Rating

Catalog

Topology

Buck

Iout (max) (A)

20

Vin (max) (V)

16

Vin (min) (V)

4

Vout (max) (V)

5.5

Vout (min) (V)

0.5

Features

Adjustable soft start, Differential Remote Sense, Hiccup mode protection, Light-load efficiency, Overcurrent protection, Overvoltage protection, Power good, Prebias startup, Under Voltage Protection, Undervoltage protection

Control mode

D-CAP4

Operating temperature range (°C)

-40 to 150

Iq (typ) (A)

0.001

Duty cycle (max) (%)

30

Package

WQFN-HR (VAN)-19-9 mm² 3 x 3

Features

  • 4V to 16V input voltage range
  • 3.1V to 5.3V external VCC bias support
  • 8.4mΩ and 3.3mΩ MOSFETs (VVCC = 3.3V)
  • 20A continuous output current
  • Optimized 19-pin WQFN-HR package for efficiency and thermal performance
  • ±1.25% output voltage accuracy with internal feedback, TJ = –40°C to +150°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
  • 4V to 16V input voltage range
  • 3.1V to 5.3V external VCC bias support
  • 8.4mΩ and 3.3mΩ MOSFETs (VVCC = 3.3V)
  • 20A continuous output current
  • Optimized 19-pin WQFN-HR package for efficiency and thermal performance
  • ±1.25% output voltage accuracy with internal feedback, TJ = –40°C to +150°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

Description

The TPS548B23 device is a small, high-efficiency, synchronous buck converter with an adaptive on-time 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 space-constrained data center applications.

The TPS548B23 device has differential remote sense, high-performance integrated MOSFETs, a ±1.0% reference voltage for external feedback, and supports ±1.25% output voltage accuracy with internal reference. The device features accurate load and line regulation and Eco-mode or Forced Continuous Conduction Mode (FCCM) operation. Pin strap 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 3.1V to 5.3V 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.

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