TPS55010

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2.95V To 6V Input, 2W, Isolated DC/DC Converter with Integrated FETS

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Product details

Parameters

Vin (Min) (V) 2.95 Vin (Max) (V) 6 Switching frequency (Max) (kHz) 2000 Soft start Adjustable Features Adjustable UVLO, Enable, Frequency Synchronization, Power Good Operating temperature range (C) -40 to 150 Iout (A) 0.4 Product type Converter (Integrated switch) Topology Buck, Flybuck open-in-new Find other Flybuck converters

Package | Pins | Size

WQFN (RTE) 16 9 mm² 3 x 3 open-in-new Find other Flybuck converters

Features

  • Isolated Fly-Buck™ Topology
  • Primary Side Feedback
  • 100 kHz to 2000 kHz Switching
    Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start
  • Adjustable Input Voltage UVLO
  • Open Drain Fault Output
  • Cycle-by-Cycle Current Limit
  • Thermal Shutdown Protection
  • 3 mm × 3 mm 16 Pin QFN Package
open-in-new Find other Flybuck converters

Description

The TPS55010 is a transformer driver designed to provide isolated power for isolated interfaces, such as RS-485 and RS-232, from 3.3 V or 5 V input supply.

The device uses fixed frequency current mode control and half bridge power stage with primary side feedback to regulate the output voltage for power levels up to 2W. The switching frequency is adjustable from 100 kHz to 2000 kHz so solution size, efficiency and noise can be optimized. The switching frequency is set with a resistor or is synchronized to external clock using the RT/CLK pin. To minimize inrush currents, a small capacitor can be connected to the SS pin. The EN pin can be used as an enable pin or to increase the default input UVLO voltage from 2.6V.

With the same transformer the TPS55010 can provide a solution for different input and output voltage combinations by adjusting the primary side voltage. Off the shelf transformers are available to provide single positive, or dual positive and negative output voltages.

The TPS55010 is available in a 3mm x 3mm 16 pin QFN package with thermal pad.

open-in-new Find other Flybuck converters
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Technical documentation

Design & development

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

Hardware development

EVALUATION BOARD Download
25
Description
The TPS55010EVM-009 is a fully assembled and tested circuit for evaluating the TPS55010 Isolated DC/DC Converter with Integrated FETs. The TPS55010EVM-009 uses fixed frequency current mode control and a half bridge power stage with primary side feedback to regulate the output voltage for power (...)
Features
  • Isolated Flybuck Topology
  • Primary Side Feedback
  • 100 kHz to 2000 kHz Switching Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start
  • Adjustable Input Voltage UVLO
  • Open Drain Fault Output
  • Cycle-by-Cycle Current Limit
  • Thermal Shutdown Protection
  • 3mm×3mm 16-Pin QFN Package
EVALUATION BOARD Download
25
Description
The TPS55010EVM-051 is a fully assembled and tested circuit for evaluating the TPS55010 Isolated DC/DC Converter with Integrated FETs. The TPS55010EVM-051 uses fixed frequency current mode control and a half bridge power stage with primary side feedback to regulate the dual, 600mW output voltages.
Features
  • Isolated Fly-Buck Topology
  • Primary Side Feedback
  • 100 kHz to 2000 kHz Switching Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start
  • Adjustable Input Voltage UVLO
  • Open Drain Fault Output
  • Cycle-by-Cycle Current Limit
  • Thermal Shutdown Protection
  • 3mm×3mm 16-Pin QFN Package

Design tools & simulation

SIMULATION MODEL Download
SLVM278A.ZIP (44 KB) - PSpice Model
SIMULATION MODEL Download
SLVM601.ZIP (51 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SLVM602.TSC (167 KB) - TINA-TI Reference Design
CALCULATION TOOL Download
Fly-Buck and Flyback Topology Selector
FLYBUCK-FLYBACK-DESIGN-CALC This tool helps a power supply engineer to select the right isolated DC-DC topology based on the specifications. Depending on the topology chosen, the calculator also recommends the right IC for the design.
Features
  • Features isolated topologies like Fly-Buck™, Fly-Buck-Boost, DCM and CCM Flyback
  • Capability to design up to 6 isolated outputs
  • Recommends ICs for desired application design
  • Incorporates loop compensation in designs
  • Compares efficiency, external component count and transformer currents for every topology (...)
CALCULATION TOOL Download
SLVC363A.ZIP (436 KB)
DESIGN TOOL Download
Fly-buck design calculator tool
FLYBUCK-DESIGNER — The Fly-Buck Design Calculator Tool assists designers with routine calculations for the 2W TPS55010 isolated DC/DC Converter. Two versions are available to support a single or a dual output configuration. The tool helps the user select a transformer, the sense resistors, and the power diode as well (...)

Reference designs

Many TI reference designs include the TPS55010 Use our reference design selection tool to review and identify designs that best match your application and parameters.

CAD/CAE symbols

Package Pins Download
WQFN (RTE) 16 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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