TPS548B28

ACTIVE

2.7-V to 16-V input, 20-A synchronous step-down converter with remote sense and hiccup current limit

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 20 Vin (min) (V) 2.7 Vin (max) (V) 16 Switching frequency (min) (kHz) 600 Switching frequency (max) (kHz) 1000 Features Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO Fixed Control mode D-CAP3 Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (µA) 680 Duty cycle (max) (%) 86
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 20 Vin (min) (V) 2.7 Vin (max) (V) 16 Switching frequency (min) (kHz) 600 Switching frequency (max) (kHz) 1000 Features Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO Fixed Control mode D-CAP3 Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (µA) 680 Duty cycle (max) (%) 86
VQFN-HR (RWW) 21 12 mm² 4 x 3
  • 4-V to 16-V input range up to 20-A without external bias
  • 2.7-V to 16-V input range up to 20-A with external bias ranging from 3.13-V to 3.6-V
  • Output voltage range: 0.6-V to 5.5-V
  • Integrated 7.7-mΩ and 2.4-mΩ MOSFETs support 20-A continuous output current
  • D-CAP3™ control mode with ultra fast load-step response
  • Supports all ceramic output capacitors
  • Differential remote sense with 0.6-V ±1% VREF for –40°C to +125°C junction temperature
  • Selectable FCCM or auto-skipping Eco-mode™ for high light-load efficiency
  • Programmable current limit with RTRIP
  • Pin-selectable switching frequency: 600 kHz, 800 kHz, 1 MHz
  • Differential remote sense for high output accuracy
  • Programmable soft-start time
  • External reference input for tracking
  • Prebiased start-up capability
  • Open-drain power-good output
  • Hiccup for OC and UV faults, latch-off for OV Fault
  • 4-mm × 3-mm, 21-pin QFN package
  • Pin compatible with 15-A TPS548A28
  • Fully RoHS-compliant without exemption
  • 4-V to 16-V input range up to 20-A without external bias
  • 2.7-V to 16-V input range up to 20-A with external bias ranging from 3.13-V to 3.6-V
  • Output voltage range: 0.6-V to 5.5-V
  • Integrated 7.7-mΩ and 2.4-mΩ MOSFETs support 20-A continuous output current
  • D-CAP3™ control mode with ultra fast load-step response
  • Supports all ceramic output capacitors
  • Differential remote sense with 0.6-V ±1% VREF for –40°C to +125°C junction temperature
  • Selectable FCCM or auto-skipping Eco-mode™ for high light-load efficiency
  • Programmable current limit with RTRIP
  • Pin-selectable switching frequency: 600 kHz, 800 kHz, 1 MHz
  • Differential remote sense for high output accuracy
  • Programmable soft-start time
  • External reference input for tracking
  • Prebiased start-up capability
  • Open-drain power-good output
  • Hiccup for OC and UV faults, latch-off for OV Fault
  • 4-mm × 3-mm, 21-pin QFN package
  • Pin compatible with 15-A TPS548A28
  • Fully RoHS-compliant without exemption

The TPS548B28 device is a small high-efficiency synchronous buck converter with an adaptive on-time D-CAP3 control mode. Because external compensation is not required, the device is easy to use and requires few external components. The device is well-suited for space-constrained data center applications.

The TPS548B28 device has differential remote sense, high-performance integrated MOSFETs, and an accurate ±1%, 0.6-V reference over the full operating junction temperature range. The device features fast load-transient response, accurate load regulation and line regulation, Skip-mode or FCCM operation, and programmable soft start.

The TPS548B28 is a lead-free device. The device is fully RoHS compliant without exemption.

The TPS548B28 device is a small high-efficiency synchronous buck converter with an adaptive on-time D-CAP3 control mode. Because external compensation is not required, the device is easy to use and requires few external components. The device is well-suited for space-constrained data center applications.

The TPS548B28 device has differential remote sense, high-performance integrated MOSFETs, and an accurate ±1%, 0.6-V reference over the full operating junction temperature range. The device features fast load-transient response, accurate load regulation and line regulation, Skip-mode or FCCM operation, and programmable soft start.

The TPS548B28 is a lead-free device. The device is fully RoHS compliant without exemption.

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Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS548B28EVM — 20-A DC-DC buck converter evaluation module with 0.6-Vref and internal 3-V LDO

The TPS548B28 is a D-CAP3™ synchronous buck converter designed for 20-A output current, and the TPS548B28EVM evaluation module (EVM) is designed to demonstrate the small printed-circuit-board areas that may be achieved when designing with the device. The high-side and low-side switching (...)
User guide: PDF
Not available on TI.com
Evaluation board

TPS54JB20EVM — 16-V, 20-A step-down converter with differential remote sense evaluation module

The TPS54JB20EVM is an evaluation module (EVM) designed to demonstrate the small printed circuit board are that may be achieved when designing with the TPS54JB20 device, a D-CAP3 synchronous buck converter designed for up to 20-A output current. The TPS54JB20 device has integrated (...)
User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS548B28 PSpice Transient Model

SNVMC07.ZIP (191 KB) - PSpice Model
Simulation model

TPS548B28 SIMPLIS Transient and Average Model

SNVMC08.ZIP (562 KB) - SIMPLIS Model
Calculation tool

SLVRBH6 TPS54J06x TPS54Jx20 TPS548x28-9 Excel Calculator Tool

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
TPS548A28 2.7-V to 16-V, 15-A synchronous buck converter with remote sense and 3-V LDO TPS548A29 2.7-V to 16-V, 15-A synchronous buck converter with remote sense and 4.5-V LDO TPS548B27 2.7-V to 16-V, 20-A synchronous step-down converter with differential remote sense TPS548B28 2.7-V to 16-V input, 20-A synchronous step-down converter with remote sense and hiccup current limit TPS54J060 4-V to 16-V input, 6-A synchronous buck converter, 900-mV reference voltage, latch-off current limit TPS54J061 4-V to 16-V input, 6-A synchronous buck converter, 600-mV reference voltage and hiccup current limit TPS54JA20 2.7-V to 16-V input, 12-A synchronous buck converter with remote sense and latch-off current limit TPS54JB20 2.7-V to 16-V input, 20-A synchronous buck converter with remote sense and latch-off current limit
Package Pins CAD symbols, footprints & 3D models
VQFN-HR (RWW) 21 Ultra Librarian

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

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