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TPS54286

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4.5V to 28V Input, Dual 2A Output, 600kHz Step-Down Converter with Internal Compensation

Product details

Vin (min) (V) 4.5 Vin (max) (V) 28 Vout (min) (V) 0.8 Vout (max) (V) 25.2 Iout (max) (A) 2 Iq (typ) (mA) 1.8 Switching frequency (min) (kHz) 600 Switching frequency (max) (kHz) 600 Features Enable, Phase Interleaving Operating temperature range (°C) -40 to 85 Rating Catalog Regulated outputs (#) 2 Control mode current mode Duty cycle (max) (%) 85 Type Converter
Vin (min) (V) 4.5 Vin (max) (V) 28 Vout (min) (V) 0.8 Vout (max) (V) 25.2 Iout (max) (A) 2 Iq (typ) (mA) 1.8 Switching frequency (min) (kHz) 600 Switching frequency (max) (kHz) 600 Features Enable, Phase Interleaving Operating temperature range (°C) -40 to 85 Rating Catalog Regulated outputs (#) 2 Control mode current mode Duty cycle (max) (%) 85 Type Converter
HTSSOP (PWP) 14 32 mm² 5 x 6.4
  • 4.5-V to 28-V Input Range
  • Output Voltage Range 0.8 V to 90% of Input Voltage
  • Output Current Up to 2 A
  • Two Fixed Switching Frequency Versions:
    • TPS54283: 300 kHz
    • TPS54286: 600 kHz
  • Two Selectable Levels of Overcurrent Protection (Output 2)
  • 0.8-V 1.5% Voltage Reference
  • 2.1-ms Internal Soft Start
  • Dual PWM Outputs 180° Out-of-Phase
  • Ratiometric or Sequential Startup Modes Selectable by a Single Pin
  • 100-m Internal High-Side MOSFETs
  • Current Mode Control
  • Internal Compensation (See Page 16)
  • Pulse-by-Pulse Overcurrent Protection
  • Thermal Shutdown Protection at 148°C
  • 14-Pin PowerPAD™ HTSSOP package
  • APPLICATIONS
    • Set Top Box
    • Digital TV
    • Power for DSP
    • Consumer Electronics

PowerPAD Is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.

  • 4.5-V to 28-V Input Range
  • Output Voltage Range 0.8 V to 90% of Input Voltage
  • Output Current Up to 2 A
  • Two Fixed Switching Frequency Versions:
    • TPS54283: 300 kHz
    • TPS54286: 600 kHz
  • Two Selectable Levels of Overcurrent Protection (Output 2)
  • 0.8-V 1.5% Voltage Reference
  • 2.1-ms Internal Soft Start
  • Dual PWM Outputs 180° Out-of-Phase
  • Ratiometric or Sequential Startup Modes Selectable by a Single Pin
  • 100-m Internal High-Side MOSFETs
  • Current Mode Control
  • Internal Compensation (See Page 16)
  • Pulse-by-Pulse Overcurrent Protection
  • Thermal Shutdown Protection at 148°C
  • 14-Pin PowerPAD™ HTSSOP package
  • APPLICATIONS
    • Set Top Box
    • Digital TV
    • Power for DSP
    • Consumer Electronics

PowerPAD Is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.

TPS54283 and TPS54286 are dual output non-synchronous buck converters capable of supporting 2-A output applications that operate from a 4.5-V to 28-V input supply voltage, and require output voltages between 0.8 V and 90% of the input voltage.

With internally-determined operating frequency, soft start time, and control loop compensation, these converters provide many features with a minimum of external components. Channel 1 overcurrent protection is set at 3 A, while Channel 2 overcurrent protection level is selected by connecting a pin to ground, to BP, or left floating. The setting levels are used to allow for scaling of external components for applications not needing the full load capability of both outputs.

The outputs may be enabled independently, or may be configured to allow either ratiometric or sequential startup sequencing. Additionally, the two outputs may also be powered from different sources.

TPS54283 and TPS54286 are dual output non-synchronous buck converters capable of supporting 2-A output applications that operate from a 4.5-V to 28-V input supply voltage, and require output voltages between 0.8 V and 90% of the input voltage.

With internally-determined operating frequency, soft start time, and control loop compensation, these converters provide many features with a minimum of external components. Channel 1 overcurrent protection is set at 3 A, while Channel 2 overcurrent protection level is selected by connecting a pin to ground, to BP, or left floating. The setting levels are used to allow for scaling of external components for applications not needing the full load capability of both outputs.

The outputs may be enabled independently, or may be configured to allow either ratiometric or sequential startup sequencing. Additionally, the two outputs may also be powered from different sources.

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Technical documentation

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Type Title Date
* Data sheet 2-A DUAL NON-SYNCHRONOUS CONVERTER WITH INTEGRATED HIGH SIDE MOSFET datasheet (Rev. C) 16 Oct 2007
User guide TPS54383 Step-Down Converter Evaluation Module User's Guide (Rev. D) PDF | HTML 13 Oct 2021
User guide TPS54x86 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 13 Oct 2021
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018

Design & development

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

Evaluation board

TPS54386EVM — TPS54386 13.2V Input, Dual 5V and 3.3V Output, 2A Evaluation Module

The TPS54386EVM evaluation module (EVM) is a dual non-synchronous buck converter providing fixed 5.0-V and 3.3-V output at up to 2 A each from a 12-V input bus. The EVM is designed to start up from a single supply, so no additional bias voltage is required for start-up. The module uses the (...)
User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS54286 TINA-TI Average 3.3V Reference Design

SLUM039.ZIP (165 KB) - TINA-TI Reference Design
Simulation model

TPS54286 TINA-TI Average 5V Reference Design

SLUM040.ZIP (165 KB) - TINA-TI Reference Design
Simulation model

TPS54286 TINA-TI Average Spice Model

SLUM041.ZIP (4 KB) - TINA-TI Spice Model
Simulation model

TPS54286 TINA-TI Transient Reference Design

SLUM075.TSC (2104 KB) - TINA-TI Reference Design
Simulation model

TPS54286 TINA-TI Transient Spice Model

SLUM076.TSM (25 KB) - TINA-TI Spice Model
Simulation model

TPS54286 Unencrypted PSpice Average Model Package (Rev. A)

SLUM091A.ZIP (115 KB) - PSpice Model
Simulation model

TPS54286 Unencrypted PSpice Transient Model Package (Rev. A)

SLIM110A.ZIP (134 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

TIDA-00195 — Isolated IGBT Gate Driver Evaluation Platform for 3-Phase Inverter System Reference Design

The TIDA-00195 reference design consists of a 22kW power stage with TI’s new reinforced isolated IGBT gate driver ISO5852S intended for motor control in various applications. This design allows performance evaluation of the ISO5852S in 3-phase inverter incorporating 1200V rated IGBT modules (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
HTSSOP (PWP) 14 View options

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