Product details

Vin (Min) (V) 4.5 Vin (Max) (V) 60 Vout (Min) (V) 0.8 Vout (Max) (V) 59 Iout (Max) (A) 5 Iq (Typ) (uA) 152 Switching frequency (Min) (kHz) 100 Switching frequency (Max) (kHz) 2500 Features Enable, Frequency Synchronization, Light Load Efficiency, Over Current Protection, Power Good, Tracking, UVLO Adjustable Rating Catalog Regulated outputs (#) 1 Control mode Current Mode Duty cycle (Max) (%) 98
Vin (Min) (V) 4.5 Vin (Max) (V) 60 Vout (Min) (V) 0.8 Vout (Max) (V) 59 Iout (Max) (A) 5 Iq (Typ) (uA) 152 Switching frequency (Min) (kHz) 100 Switching frequency (Max) (kHz) 2500 Features Enable, Frequency Synchronization, Light Load Efficiency, Over Current Protection, Power Good, Tracking, UVLO Adjustable Rating Catalog Regulated outputs (#) 1 Control mode Current Mode Duty cycle (Max) (%) 98
WSON (DPR) 10 16 mm² 4 x 4
  • High efficiency at light loads with pulse skipping Eco-mode™
  • 87-mΩ high-side MOSFET
  • 152-µA operating quiescent current and 2-µA shutdown current
  • 100-kHz to 2.5-MHz adjustable switching frequency
  • Synchronizes to external clock
  • Low dropout at light loads with integrated BOOT recharge FET
  • Adjustable UVLO voltage and hysteresis
  • UV and OV power-good output
  • Adjustable soft start and sequencing
  • 0.8-V 1% internal voltage reference
  • 10-pin WSON with thermal pad package
  • –40°C to 150°C TJ operating range
  • Create a custom design using the TPS54561 with the WEBENCH® Power Designer
  • High efficiency at light loads with pulse skipping Eco-mode™
  • 87-mΩ high-side MOSFET
  • 152-µA operating quiescent current and 2-µA shutdown current
  • 100-kHz to 2.5-MHz adjustable switching frequency
  • Synchronizes to external clock
  • Low dropout at light loads with integrated BOOT recharge FET
  • Adjustable UVLO voltage and hysteresis
  • UV and OV power-good output
  • Adjustable soft start and sequencing
  • 0.8-V 1% internal voltage reference
  • 10-pin WSON with thermal pad package
  • –40°C to 150°C TJ operating range
  • Create a custom design using the TPS54561 with the WEBENCH® Power Designer

The TPS54561 is a 60-V, 5-A, step down regulator with an integrated high side MOSFET. The device survives load dump pulses up to 65V per ISO 7637. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load supply current to 152 µA. Shutdown supply current is reduced to 2 µA when the enable pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can increase using an external resistor divider at the enable pin. The output voltage start up ramp is controlled by the soft start pin that can also be configured for sequencing/tracking. An open drain power good signal indicates the output is within 93% to 106% of its nominal voltage.

A wide adjustable switching-frequency range allows for optimization of either efficiency or external component size. Cycle-by-cycle current limit, frequency foldback and thermal shutdown protects internal and external components during an overload condition.

The TPS54561 is available in an 10-pin 4-mm × 4-mm WSON package.

The TPS54561 is a 60-V, 5-A, step down regulator with an integrated high side MOSFET. The device survives load dump pulses up to 65V per ISO 7637. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load supply current to 152 µA. Shutdown supply current is reduced to 2 µA when the enable pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can increase using an external resistor divider at the enable pin. The output voltage start up ramp is controlled by the soft start pin that can also be configured for sequencing/tracking. An open drain power good signal indicates the output is within 93% to 106% of its nominal voltage.

A wide adjustable switching-frequency range allows for optimization of either efficiency or external component size. Cycle-by-cycle current limit, frequency foldback and thermal shutdown protects internal and external components during an overload condition.

The TPS54561 is available in an 10-pin 4-mm × 4-mm WSON package.

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Technical documentation

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Type Title Date
* Data sheet TPS54561 4.5-V to 60-V Input, 5-A, Step-Down DC-DC Converter with Soft-Start and Eco-mode™ datasheet (Rev. G) PDF | HTML 02 Jun 2021
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
EVM User's guide Evaluation Module for the TPS54561 Step-Down Converter 30 Oct 2013
Application note Creating a Universal Car Charger for USB Devices From the TPS54240 and TPS2511 (Rev. E) 16 Sep 2013
Application note Create a Split-Rail Power Supply with a Wide Input Voltage Buck Regulator (Rev. A) 26 Oct 2012
Application note Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) 26 Oct 2012

Design & development

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

Evaluation board

TPS54561EVM-555 — TPS54561EVM-555 - 60 V Input, 5A, Step Down DC-DC Converter Evaluation Module

The TPS54561EVM-555 is a fully assembled and tested circuit for evaluating the TPS54561 Step-Down Converter. The TPS54561EVM-555 operates from a 7.0V to 60V input (12V nominal) and provides a 5.0V output at 5.0A.

User guide: PDF
Not available on TI.com
Simulation model

TPS54561 PSpice Transient Model

SLVM982.ZIP (677 KB) - PSpice Model
Simulation model

TPS54561 TINA-TI Reference Design

SLVMA92.TSC (239 KB) - TINA-TI Reference Design
Simulation model

TPS54561 TINA-TI Transient Spice Model

SLVMA93.ZIP (56 KB) - TINA-TI Spice Model
Simulation model

TPS54561 Unencrypted PSpice Transient Model

SLVMCU3.ZIP (6 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs

PMP10357 — 12V@4.2A Buck Converter Radio Reference Design

This current-mode control buck converter provides 12V @ 4.2A over a wide 14V - 36V input voltage range. It uses minimal component count and a 500KHz switching frequency to occupy approximately 1 sq-inch of board area. It achieves a peak efficiency of 95.7% at 24Vin and 2A load.
Schematic: PDF
Package Pins Download
WSON (DPR) 10 View options

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