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TPS548D21

ACTIVE

1.5-V to 16-V, 40-A synchronous SWIFT™ buck converter with AVSO and differential remote sense

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Data sheet

TPS548D21

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 40 Vin (min) (V) 1.5 Vin (max) (V) 16 Switching frequency (min) (kHz) 425 Switching frequency (max) (kHz) 1050 Features Adaptive/Dynamic Voltage Scaling, 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 adjustable, Voltage Margining Control mode D-CAP3 Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (µA) 2000 Duty cycle (max) (%) 80
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 40 Vin (min) (V) 1.5 Vin (max) (V) 16 Switching frequency (min) (kHz) 425 Switching frequency (max) (kHz) 1050 Features Adaptive/Dynamic Voltage Scaling, 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 adjustable, Voltage Margining Control mode D-CAP3 Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (µA) 2000 Duty cycle (max) (%) 80
LQFN-CLIP (RVF) 40 35 mm² 7 x 5
  • Conversion Input Voltage Range (PVIN): 1.5 V to 16 V
  • Input Bias Voltage (VDD) Range: 4.5 V to 22 V
  • Output Voltage Range: 0.6 V to 5.5 V
  • Integrated, 2.9-mΩ and 1.2-mΩ Power MOSFETs With 40-A Continuous Output Current
  • Voltage Reference 0.6 V to 1.2 V in 50-mV Steps Using VSEL Pin
  • ±0.5%, 0.9-VREF Tolerance Range: –40°C to +125°C Junction Temperature
  • True Differential Remote Sense Amplifier
  • D-CAP3™ Control Loop
  • Analog AVS Optimization via REFIN_TRK Pin
  • Adaptive On-Time Control with 4 Selectable Frequency Settings: 425 kHz, 650 kHz, 875 kHz, and 1.05 MHz
  • Temperature Compensated and Programmable Current Limit with RILIM and OC Clamp
  • Choice of Hiccup or Latch-Off OVP or UVP
  • VDD UVLO External Adjustment by Precision EN Hysteresis
  • Prebias Start-up Support
  • FCCM Mode During All Operation
  • Full Suite of Fault Protection and PGOOD
  • 7 mm × 5 mm × 1.5 mm, 40-Pin, Stack Clipped LQFN-CLIP Package
  • Create a Custom Design Using the TPS548D21 With the WEBENCH® Power Designer
  • Conversion Input Voltage Range (PVIN): 1.5 V to 16 V
  • Input Bias Voltage (VDD) Range: 4.5 V to 22 V
  • Output Voltage Range: 0.6 V to 5.5 V
  • Integrated, 2.9-mΩ and 1.2-mΩ Power MOSFETs With 40-A Continuous Output Current
  • Voltage Reference 0.6 V to 1.2 V in 50-mV Steps Using VSEL Pin
  • ±0.5%, 0.9-VREF Tolerance Range: –40°C to +125°C Junction Temperature
  • True Differential Remote Sense Amplifier
  • D-CAP3™ Control Loop
  • Analog AVS Optimization via REFIN_TRK Pin
  • Adaptive On-Time Control with 4 Selectable Frequency Settings: 425 kHz, 650 kHz, 875 kHz, and 1.05 MHz
  • Temperature Compensated and Programmable Current Limit with RILIM and OC Clamp
  • Choice of Hiccup or Latch-Off OVP or UVP
  • VDD UVLO External Adjustment by Precision EN Hysteresis
  • Prebias Start-up Support
  • FCCM Mode During All Operation
  • Full Suite of Fault Protection and PGOOD
  • 7 mm × 5 mm × 1.5 mm, 40-Pin, Stack Clipped LQFN-CLIP Package
  • Create a Custom Design Using the TPS548D21 With the WEBENCH® Power Designer

The TPS548D21 device is a compact single buck converter with adaptive on-time, D-CAP3 mode control. It is designed for high accuracy, high efficiency, fast transient response, ease-of-use, low external component count and space-conscious power systems.

This device features full differential sense, TI integrated FETs with a high-side on-resistance of 2.9 mΩ and a low-side on-resistance of 1.2 mΩ. The device also features accurate 0.5%, 0.9-V reference with an ambient temperature range between –40°C and +125°C. Competitive features include: very low external component count, accurate load regulation and line regulation, FCCM mode operation, and internal soft-start control.

The TPS548D21 device is available in 7-mm × 5-mm, 40-pin, LQFN-CLIP (RVF) package (RoHs exempt).

The TPS548D21 device is a compact single buck converter with adaptive on-time, D-CAP3 mode control. It is designed for high accuracy, high efficiency, fast transient response, ease-of-use, low external component count and space-conscious power systems.

This device features full differential sense, TI integrated FETs with a high-side on-resistance of 2.9 mΩ and a low-side on-resistance of 1.2 mΩ. The device also features accurate 0.5%, 0.9-V reference with an ambient temperature range between –40°C and +125°C. Competitive features include: very low external component count, accurate load regulation and line regulation, FCCM mode operation, and internal soft-start control.

The TPS548D21 device is available in 7-mm × 5-mm, 40-pin, LQFN-CLIP (RVF) package (RoHs exempt).
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TPS548D22 ACTIVE 1.5-V to 16-V, 40-A synchronous SWIFT™ buck converter with differential remote sense Does not have AVS.

Technical documentation

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Type Title Date
* Data sheet TPS548D21 1.5-V to 16-V VIN, 4.5-V to 22-V VDD, 40-A SWIFT™ Synchronous Step-Down Converter Supporting AVSO and Full Differential Sense datasheet (Rev. A) PDF | HTML 29 Aug 2017
EVM User's guide TPS548D21 SWIFT™ Step-Down Converter Evaluation Module User's Guide (Rev. B) PDF | HTML 03 Aug 2021
Application note Calculating Output Capacitance to Meet Transient and Ripple Requirements 02 May 2017
Technical article Managing power scaling and sequencing the analog way PDF | HTML 07 Apr 2017
Application note Unified Ground Connection Recommendation on TPS53K- Integrated FET-Converter Dev 25 Jan 2017

Design & development

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

Evaluation board

TPS548D21EVM-784 — TPS548D21 DCAP3 High Performance, 40-A Single Step-Down Converter Evaluation Module

The TPS548D21EVM-784 evaluation module (EVM) uses the TPS548D21. The TPS548D21 is a D-CAP3™ mode, 40A synchronous buck converter with integrated MOSFETs supporting AVSO. It provides a fixed 1.0V output at up to 40A from a 12V input bus.
User guide: PDF | HTML
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Simulation model

TPS548D21 PSpice Transient Model

SLUM542.ZIP (157 KB) - PSpice Model
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Package Pins CAD symbols, footprints & 3D models
LQFN-CLIP (RVF) 40 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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