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TPS54061

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4.7V to 60V Input, 200mA Synchronous Step-Down Converter with Low IQ

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Data sheet

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LMR36503 ACTIVE 3-V to 65-V, 0.3-A ultra-small synchronous buck converter with 6 μA IQ Smaller footprint, lower IQ and lower EMI.

TPS54061

ACTIVE
Data sheet Order now

Product details

Vin (min) (V) 4.7 Vin (max) (V) 60 Vout (min) (V) 0.8 Vout (max) (V) 58 Iout (max) (A) 0.2 Iq (typ) (mA) 0.09 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 1100 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Synchronous Rectification, UVLO adjustable Operating temperature range (°C) -40 to 150 Rating Catalog Regulated outputs (#) 1 Control mode current mode Duty cycle (max) (%) 98 Type Converter
Vin (min) (V) 4.7 Vin (max) (V) 60 Vout (min) (V) 0.8 Vout (max) (V) 58 Iout (max) (A) 0.2 Iq (typ) (mA) 0.09 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 1100 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Synchronous Rectification, UVLO adjustable Operating temperature range (°C) -40 to 150 Rating Catalog Regulated outputs (#) 1 Control mode current mode Duty cycle (max) (%) 98 Type Converter
VSON (DRB) 8 9 mm² 3 x 3
  • Integrated High-Side and Low-Side MOSFET
  • Diode Emulation for Improved Light Load
    Efficiency
  • Peak Current Mode Control
  • 90-µA Operating Quiescent Current
  • 1.4-µA Shutdown Supply Current
  • 50-kHz to 1100-kHz Adjustable Switching
    Frequency
  • Synchronizes to External Clock
  • Internal Slow-Start
  • 0.8 V ±1% Voltage Reference
  • Stable With Ceramic Output Capacitors or Low-
    Cost Aluminum Electrolytic
  • Cycle-by-Cycle Current Limit, Thermal, OVP and
    Frequency Foldback Protection
  • VSON-8 Package, 3 mm × 3 mm With Thermal
    Pad
  • –40°C to 150°C Operating Junction Temperature
  • Integrated High-Side and Low-Side MOSFET
  • Diode Emulation for Improved Light Load
    Efficiency
  • Peak Current Mode Control
  • 90-µA Operating Quiescent Current
  • 1.4-µA Shutdown Supply Current
  • 50-kHz to 1100-kHz Adjustable Switching
    Frequency
  • Synchronizes to External Clock
  • Internal Slow-Start
  • 0.8 V ±1% Voltage Reference
  • Stable With Ceramic Output Capacitors or Low-
    Cost Aluminum Electrolytic
  • Cycle-by-Cycle Current Limit, Thermal, OVP and
    Frequency Foldback Protection
  • VSON-8 Package, 3 mm × 3 mm With Thermal
    Pad
  • –40°C to 150°C Operating Junction Temperature

The TPS54061 device is a 60-V, 200-mA, synchronous step-down DC-DC converter with integrated high-side and low-side MOSFETs. Current mode control provides simple external compensation and flexible component selection. The non-switching supply current is 90 µA. Using the enable pin, shutdown supply current is reduced to 1.4 µA.

To increase light load efficiency the low-side MOSFET emulates a diode when the inductor current reaches zero.

Under voltage lockout is internally set at 4.5 V, but can be increased using two resistors on the enable pin. The output voltage startup ramp is controlled by the internal slow-start time.

The adjustable switching frequency range allows efficiency and external component size to be optimized. Frequency foldback and thermal shutdown protects the part during an overload condition.

The TPS54061 enables small designs by integrating the MOSFETs, boot recharge diode, and minimizing the IC footprint with a small 3.00 mm × 3.00 mm thermally enhanced VSON package.

The TPS54061 is supported in the WEBENCH™ Designer at www.ti.com.

The TPS54061 device is a 60-V, 200-mA, synchronous step-down DC-DC converter with integrated high-side and low-side MOSFETs. Current mode control provides simple external compensation and flexible component selection. The non-switching supply current is 90 µA. Using the enable pin, shutdown supply current is reduced to 1.4 µA.

To increase light load efficiency the low-side MOSFET emulates a diode when the inductor current reaches zero.

Under voltage lockout is internally set at 4.5 V, but can be increased using two resistors on the enable pin. The output voltage startup ramp is controlled by the internal slow-start time.

The adjustable switching frequency range allows efficiency and external component size to be optimized. Frequency foldback and thermal shutdown protects the part during an overload condition.

The TPS54061 enables small designs by integrating the MOSFETs, boot recharge diode, and minimizing the IC footprint with a small 3.00 mm × 3.00 mm thermally enhanced VSON package.

The TPS54061 is supported in the WEBENCH™ Designer at www.ti.com.
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Technical documentation

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Type Title Date
* Data sheet TPS54061 Wide Input 60-V, 200-mA Synchronous Step-Down DC-DC Converter With Low IQ datasheet (Rev. E) PDF | HTML 04 Nov 2015
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Technical article It’s on – TPS54061 switching regulator vs. LM317 linear regulator 22 Aug 2013
Analog Design Journal Linear versus switching regulators in industrial applications with a 24-V bus 25 Jul 2013
Technical article How to choose an LDO or switching regulator 08 May 2013
Application note Using the TPS54061 to Create an Inverting Power Supply 17 Jul 2012
EVM User's guide Evaluation Module for TPS54061 Synchronous Step-Down SWIFT Converter 12 Apr 2012

Design & development

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

Evaluation board

TPS54061EVM-142 — TPS54061 Evaluation Module

The Texas Instruments TPS54061EVM-142 evaluation module (EVM) helps designers evaluate the performance of the TPS54061 Synchronous Step-Down SWIFT™ Converter. The EVM operates from an 8V to 60V input (24V nominal) and provides a 3.3V output at 200mA.
User guide: PDF
Not available on TI.com
Simulation model

TPS54061 PSpice Transient Model

SLVM599.ZIP (49 KB) - PSpice Model
Download
Simulation model

TPS54061 Unencrypted PSpice Transient Model

SLVMCZ5.ZIP (6 KB) - PSpice Model
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Calculation tool

TPS54061 Design Excel Spreadsheet Tool (Rev. A)

SLVC431A.ZIP (198 KB)
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Calculation tool

Synchronous Inverting Buck Boost Design Calculator (Rev. A)

SLVC439A.ZIP (101 KB)
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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 (...)
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Reference designs

PMP10977 — 4-20 mA Loop Sensor Isolated Power Supply

The TPS54061 is used in a buck topology with an auxillary winding providing power to the primary side and isolated side of a isolated system. The high efficiency of this topology provides more output current from a system powered from a current limited input source. The isolated output is post (...)
Test report: PDF
Schematic: PDF
Reference designs

TIDA-00774 — 18V/1kW, 160A Peak, >98% Efficient, High Power Density Brushless Motor Drive Reference Design

The TIDA-00774 is a 1kW drive for a three-phase brushless DC (BLDC) motor in power tools operating from a 5-cell Li-ion battery with a voltage up to 21 V. The design is a 65mm x 60mm compact drive, implementing sensor-based trapezoidal control. The design takes advantage of TI's MOSFET Power Block (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00436 — 36V/1kW Brushless DC Motor Drive with Stall Current Limit of <1us Response Time Reference Design

This reference design is a power stage for brushless motors in battery-powered garden and power tools rated up to 1 kW, operating from a 10-cell lithium-ion battery with a voltage range from 36 to 42 V. The design uses 60V, N-channel NexFETsTM featuring a very low drain-to-source resistance (RDS_ON (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00179 — Universal Digital Interface to Absolute Position Encoders Reference Design

TIDA-00179 is an EMC-compliant universal digital interface to connect to absolute position encoders like EnDat 2.2, BiSS®, SSI or HIPERFACE DSL®. This reference design supports a wide-input voltage range from 15 V to 60 V (24-V nom). A connector with 3.3-V logic I/O signals allows for (...)
Design guide: PDF
Schematic: PDF
Reference designs

PMP10182 — Wide Input Automotive Buck Reference Design

This automotive reference design has an input voltage range of 10V to 45V and provides an output voltage of 9.0V @ 150mA. It's using only ceramic capacitors on the output as well as on the input which enables the use for a wide temperature range.
Test report: PDF
Schematic: PDF
Reference designs

PMP9535 — 36-57Vin 5.4Vout 150mA Uses TPS54061 Features Light-load Efficiency Telecom Voltage Reference Design

This design uses a synchronous buck converter to provide light load efficiency with predictable ripple off "Telecom" voltage range. This approach is described in the TPS54061 datasheet from page 23 onwards. A low fixed frequency of 50kHz with operation in the discontinuous mode at all, but the (...)
Test report: PDF
Package Pins Download
VSON (DRB) 8 View options
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