Product details

Vin (Max) (V) 6 Vin (Min) (V) 2.95 Iout (Max) (A) 2 Features UVLO adjustable, Enable, Frequency synchronization, Power good, Adjustable soft start Regulated outputs (#) 1 Package type WQFN Rating Catalog
Vin (Max) (V) 6 Vin (Min) (V) 2.95 Iout (Max) (A) 2 Features UVLO adjustable, Enable, Frequency synchronization, Power good, Adjustable soft start Regulated outputs (#) 1 Package type WQFN Rating Catalog
WQFN (RTE) 16 9 mm² 3 x 3
  • 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
  • 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

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.

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.

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Design & development

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

Evaluation board

TPS55010EVM-009 — Evaluation Module for 2.95V to 6V Input, 200mA Isolated DC/DC Converter

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

TPS55010 TINA-TI Transient Reference Design

SLVM602.TSC (167 KB) - TINA-TI Reference Design
Simulation model

TPS55010 TINA-TI Transient Spice Model

SLVM601.ZIP (51 KB) - TINA-TI Spice Model
Simulation model

TPS55010 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM278A.ZIP (44 KB) - PSpice Model
Calculation tool

FLYBUCK-FLYBACK-DESIGN-CALC — Fly-Buck and Flyback Topology Selector

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.
Calculation tool

Fly-Buck Design Calculator Tool, TPS55010 (Rev. A)

SLVC363A.ZIP (436 KB)
Reference designs

TIDA-00300 — Isolated power architecture reference design for communication and analog input/output modules

This reference design provides a means to isolate I2C or SPI communication lines. This is often required in grid infrastructure applications such as protection relays and circuit breakers where high voltages are involved. This reference design provides both power isolation and signal isolation.
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00766 — Differential Pulse Train Output (PTO) Programmable Logic Controller (PLC) Module Reference Design

The differential pulse-train output (PTO) reference design illustrates the design of a differential high-speed digital output module using a RS-485 driver powered from the PLC backplane using isolated fly-buck power converter. The reference design is mainly used in positioning and motion control (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01333 — 8-ch Isolated High Voltage Analog Input Module with ISOW7841 Reference Design

The TIDA-01333 isolated high voltage analog input module reference design has eight channels supporting both, voltage and current measurement. In addition, 4 channels support common-mode voltages up to ±160V. Isolation of +5V line and the Serial Peripheral Interface  (SPI) (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00764 — 8-ch Isolated High Voltage Analog Input Module Reference Design

This reference design is a high-voltage analog input module with eight channels. Each channel can be used for both voltage and current measurement. The design uses 16-bit analog-to-digital converter (ADC) ADS8681 that can handle input voltage of up to ±12.288 V. This make any (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00128 — Low-Power, Low-Noise Analog Front End Design for Circuit Breakers (ACB/MCCB-ETU)

This reference design is intended for use in molded case circuit breakers (MCCB) electronic trip units.  The op amp based design acts as current monitoring for over-current earth fault relays. Utilizing a low cost op amp, this design provides a pick-up (A) accuracy ±10 % and time delay (...)
Design guide: PDF
Schematic: PDF
Reference designs

PMP4461 — 5Vin, Isolated +5Vout 1W DC/DC Module Reference Design

The PMP4461 is a 5Vin +5Vout, 1W reference design module. It includes a frequency-adjustable Flybuck controller TPS55010. This solution has high efficiency with 82% typically, good line, load regulation with 3,000V DC isolation. This power module was designed with minimized components and low cost (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP4440 — 5Vin, Isolated +5Vout 1W SIP DC/DC Module Reference Design

The PMP4440 is a 5Vin +5Vout, 1W reference design module which is implemented in an industry standard SIP pinout. It includes a frequency adjustable Flybuck controller TPS55010. The solution has high efficiency, good line, load regulation with 1,500V DC isolation. The power module was designed with (...)
Test report: PDF
Schematic: PDF
Reference designs

TIDA-00130 — Zero drift PGA based Analog Front End Design for Circuit Breakers (ACB/MCCB-ETU)

This reference design is intended for use in molded case circuit breakers (MCCB) electronic trip units.  The programmable gain amplifier based design acts as the current monitoring for over-current earth fault relays. Utilizing a zero drift programmable amplifier, this design provides a (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00191 — Analog Front End for Motor Electronic Overload Relays with Enhanced Current Range

This reference design is the analog front end (AFE) for an electronic overload relay, used for monitoring and protecting motors from overcurrent or undercurrent events. It is an ideal tool for developers creating overload relays for sensitive AC motors in industrial applications. This programmable (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00012 — High Efficiency Isolated CAN & Profibus Interface Reference Design

The high-efficiency isolated CAN and Profibus interface reference design is intended for use in industrial systems that require isolated power for CAN and/or Profibus transceivers. This design highlights the ability to completely shut off both the power converter and data transceivers with just one (...)
Test report: PDF
Schematic: PDF
Package Pins Download
WQFN (RTE) 16 View options

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