AC/DC & DC/DC controllers (external FET)

Optimize power conversion with our controller products, covering a wide range of isolated and non-isolated power topologies

parametric-filterView all products
We offer one of the world's largest comprehensive portfolios of high-performance AC/DC and DC/DC controllers with the widest range of power topology options. Our easy-to-use devices help you innovate and differentiate your power supply design to deliver high-efficiency, high-power density and high-performance power conversion.

Browse by category

Select an AC/DC and isolated DC/DC controller
LM51772
AC/DC & DC/DC controllers (external FET)

55V wide VIN four-switch buck-boost controller with I2C interface

Approx. price (USD) 1ku | 2.711

TPS61289
AC/DC & DC/DC controllers (external FET)

26-V 20-A bi-directional buck-boost converter

Approx. price (USD) 1ku | 0.84

UCC28750
AC/DC & DC/DC controllers (external FET)

Current-mode flyback controller with secondary-side regulation (SSR) for offline applications

Approx. price (USD) 1ku | 0.075

UCC25660
AC/DC & DC/DC controllers (external FET)

Wide VIN and VOUT 750kHz LLC controller

Approx. price (USD) 1ku | 0.9

LM25185-Q1
AC/DC & DC/DC controllers (external FET)

Automotive, 42-VIN primary side regulation flyback controller with low IQ and low EMI

Approx. price (USD) 1ku | 1.2

LM5185
AC/DC & DC/DC controllers (external FET)

100-VIN primary side regulation flyback controller with low IQ and low EMI

Approx. price (USD) 1ku | 1.2

Technical resources

Application note
Application note
UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers
Since their introduction in the mid-1980s, these PWM controllers have grown to be the most widely used control strategy in the power supply industry. Read more to find out why.
document-pdfAcrobat PDF
Application note
Application note
An Alternative Approach to Higher-Power Boost Converters
Read this application note to learn more about designing higher-power boost converters using the LM25037.
document-pdfAcrobat PDF
Application note
Application note
Modeling, Analysis and Compensation of the Current-Mode Converter
Learn how you can increase the performance of any current-mode converter while reducing and even eliminating problem areas.
document-pdfAcrobat PDF

Discover featured applications

Traction inverter & motor control
Enable traction inverter design flexibility with our multipurpose, automotive-grade PWM controllers, which facilitate the creation of reliable, high-performance powertrain solutions
Automotive heating & cooling
Design flexible, power-dense heating and cooling systems for electric vehicles (EVs) with our high-performance, automotive-grade PWM controllers
Telecom & server power
Maximize efficiency and increase power density in telecom and server power designs with our versatile high-performance PWM controllers
OBC & DC/DC converter
Realize highly efficient energy transfer and increased power density in onboard charger and DC/DC conversion applications with our multitopology automotive-grade PWM controllers
Motor drives
Meet stringent size, efficiency, EMI and regulation requirements in AC and servo drive power-stage modules with our multitopology PWM controller
Solar & energy storage systems
Handle solar inverter input voltages of up to 1500 V with our PWM controllers, which facilitate reliable, high-performance isolated power supply designs

Enable traction inverter design flexibility with our multipurpose, automotive-grade PWM controllers, which facilitate the creation of reliable, high-performance powertrain solutions

The implementation of high-voltage batteries in electric vehicles requires efficient power supplies that can generate low-voltage rails. These rails need to be generated from either low- (12 V to 48 V) or high-voltage (400 V to 800 V) batteries to ensure high traction inverter reliability.

Our PWM controllers:

  • Handle wide input-voltage ranges to support rail generation from low- and high- voltage batteries.
  • Support isolated (flyback, forward) and nonisolated (buck, boost, SEPIC) topologies for flexibility.
  • Can use either Si or SiC FETs for further powertrain efficiency and reliability.

Featured resources

REFERENCE DESIGNS
  • PMP23061 – Pre-regulated isolated driver bias supply reference design for traction-inverter applications
  • TIDA-01505 – Automotive 40-V to 1-kV input flyback reference design supporting regenerative braking test
PRODUCTS
  • UCC28C53-Q1 – Automotive, 30-V, low-power current-mode PWM controller, 8.4-V/7.6-V UVLO, 100% duty cycle
  • UCC2803-Q1 – automotive 12V VCC single ended 1MHz current mode PWM controller with 4.1V/3.6V UVLO 100% duty cycle
  • UCC2808A-2Q1 – Automotive 4.1V to 15V, 1A push-pull current mode PWM controller
HARDWARE DEVELOPMENT
  • UCC28C56EVM-066 – UCC28C56H-Q1 evaluation module for primary-side controlled (with AUX winding) flyback regulator

Design flexible, power-dense heating and cooling systems for electric vehicles (EVs) with our high-performance, automotive-grade PWM controllers

The automotive industry's transition away from combustion engines requires reworking heating, ventilation and air-conditioning systems to support high-voltage power. This necessitates isolated power supplies that maximize efficiency while maintaining low electromagnetic interference (EMI).

Our PWM Controllers:

  • Handle designs with wide input voltage ranges to feed off the low (12V – 48V) or high voltage (400 – 800V) battery.
  • Easily adjust rise/fall times to achieve EMI compliance.
  • Provide design flexibility with both isolated (flyback, forward) and nonisolated (buck, boost, SEPIC) topologies.

Featured resources

REFERENCE DESIGNS
  • TIDA-01505 – Automotive 40-V to 1-kV input flyback reference design supporting regenerative braking test
  • PMP20852 – 3W Isolated Triple Output Flyback Converter Reference Design
PRODUCTS
  • UCC28C51-Q1 – Automotive, 30-V, low-power current-mode PWM controller, 7-V/6.6-V UVLO, 50% duty cycle
  • UCC2813-5-Q1 – Automotive economy single ended 1MHz current mode PWM controller with 4.1V/3.6V UVLO 50% duty cycle
  • UCC2803-Q1 – automotive 12V VCC single ended 1MHz current mode PWM controller with 4.1V/3.6V UVLO 100% duty cycle
HARDWARE DEVELOPMENT
  • UCC28C56EVM-066 – UCC28C56H-Q1 evaluation module for primary-side controlled (with AUX winding) flyback regulator
TECHNICAL RESOURCES

Maximize efficiency and increase power density in telecom and server power designs with our versatile high-performance PWM controllers

Telecom and server power applications look to further push the boundaries of efficiency and power density. Design flexibility across the power stage and auxiliary power supplies with multipurpose PWM controllers support the creation of cost-optimized, high-performance solutions that reduce system size.

Our PWM controllers:

  • Support isolated topologies (half bridge, full bridge, push-pull, flyback, forward) topologies for high-efficiency, cost-optimized power-stage and auxiliary power-supply solutions.
  • Support nonisolated topologies (buck, boost, SEPIC) to provide regulated DC outputs.

Featured resources

REFERENCE DESIGNS
  • PMP11287 – Ultra-wide Input Range (10.8V to 264V) Bias Power Supply Reference Design
  • PMP7246 – 36-60Vin, 350W Slow Drain Modulation Power Converter with PSFB ZTE and HSHB Reference Design
PRODUCTS
  • UCC28C54 – Industrial, 30-V, low-power current-mode PWM controller, 14.5-V/9-V UVLO, 50% duty cycle
  • LM5036 – Half-bridge PWM controller with integrated auxiliary bias supply and regulated pre-biased start-up
  • LM5045 – Full-bridge PWM controller with Integrated MOSFET Drivers
HARDWARE DEVELOPMENT
  • UCC28C56EVM-066 – UCC28C56H-Q1 evaluation module for primary-side controlled (with AUX winding) flyback regulator
TECHNICAL RESOURCES

Realize highly efficient energy transfer and increased power density in onboard charger and DC/DC conversion applications with our multitopology automotive-grade PWM controllers

In onboard chargers and DC/DC converters, high-voltage battery implementations require power supplies that support wide-range voltage conversion. These supplies must support efficient energy transfer both to and from internal voltage rails from 12 V to 800 V.

Our PWM controllers:

  • Handle wide input-voltage range designs to support efficient energy conversion to and from electric vehicle batteries.
  • Provide design flexibility with both isolated (flyback, forward) and nonisolated (buck, boost, SEPIC) topologies.
  • Can use either Si or SiC FETs for further powertrain efficiency and reliability.

Featured resources

REFERENCE DESIGNS
  • PMP23061 – Pre-regulated isolated driver bias supply reference design for traction-inverter applications
  • TIDA-01505 – Automotive 40-V to 1-kV input flyback reference design supporting regenerative braking test
PRODUCTS
  • UCC28C56H-Q1 – Automotive, 30-V, low-power current-mode PWM controller, 18.8-V/15.5-V UVLO for SiC, 100% duty cycle
  • UCC28C51-Q1 – Automotive, 30-V, low-power current-mode PWM controller, 7-V/6.6-V UVLO, 50% duty cycle
  • UCC2803-Q1 – automotive 12V VCC single ended 1MHz current mode PWM controller with 4.1V/3.6V UVLO 100% duty cycle
HARDWARE DEVELOPMENT
  • UCC28C56EVM-066 – UCC28C56H-Q1 evaluation module for primary-side controlled (with AUX winding) flyback regulator

Meet stringent size, efficiency, EMI and regulation requirements in AC and servo drive power-stage modules with our multitopology PWM controller

Successfully designing motor-drive power-stage modules requires balancing size, efficiency, EMC and regulation requirements, which make design flexibility and ease of use all the more important in an effort to enable improved motor-control performance.

Our PWM controllers:

  • Support isolated (flyback, forward) and nonisolated (buck, boost, SEPIC) topologies for efficient generation of regulated voltage rails.
  • Have easily adjustable rise and fall times to minimize EMI noise between the power stage and control circuit.
  • Allow either Si or SiC FETs for power-supply design flexibility.

Featured resources

REFERENCE DESIGNS
  • PMP23061 – Pre-regulated isolated driver bias supply reference design for traction-inverter applications
  • PMP22899 – 24-W, 120-VAC to 24-VDC buck converter reference design
PRODUCTS
  • UCC28C52 – Industrial, 30-V, low-power current-mode PWM controller, 14.5-V/9-V UVLO, 100% duty cycle
  • UCC28C56H – Industrial, 30-V, low-power current-mode PWM controller, 18.8-V/15.5-V UVLO for SiC, 100% duty cycle
HARDWARE DEVELOPMENT
  • UCC28C56EVM-066 – UCC28C56H-Q1 evaluation module for primary-side controlled (with AUX winding) flyback regulator

Handle solar inverter input voltages of up to 1500 V with our PWM controllers, which facilitate reliable, high-performance isolated power supply designs

Modern solar inverter and power conversion systems require isolated power supplies that can handle wide input-voltage ranges from the solar array and battery energy storage systems to create internal DC voltages, while simultaneously enabling high reliability and conversion efficiency.

Our PWM controllers:

  • Can withstand operating maximum junction temperatures of up to 150°C for use in the harshest environments.
  • Allow either Si or SiC FETs for flexibility in design, performance and cost.
  • Support wide input-voltage range designs ideal for grid infrastructure applications.

Featured resources

REFERENCE DESIGNS
  • PMP11287 – Ultra-wide Input Range (10.8V to 264V) Bias Power Supply Reference Design
  • TIDA-01505 – Automotive 40-V to 1-kV input flyback reference design supporting regenerative braking test
PRODUCTS
  • UCC28C54 – Industrial, 30-V, low-power current-mode PWM controller, 14.5-V/9-V UVLO, 50% duty cycle
  • UCC28C56H – Industrial, 30-V, low-power current-mode PWM controller, 18.8-V/15.5-V UVLO for SiC, 100% duty cycle
HARDWARE DEVELOPMENT
  • UCC28C56EVM-066 – UCC28C56H-Q1 evaluation module for primary-side controlled (with AUX winding) flyback regulator

Design & development resources

Evaluation board
UCC28C56H-Q1 evaluation module for primary-side controlled (with AUX winding) flyback regulator

The UCC28C56EVM-066 is a highly efficient primary-side controlled (with AUX winding) flyback auxiliary power supply for EV and HEV automotive power trains. The design provides 15.2-VTYP, 40-W output for 800-V battery systems. It will deliver 40 W over the input voltage range from 125 V to 1000 V. (...)

Reference design
Pre-regulated isolated driver bias supply reference design for traction-inverter applications
This pre-regulated isolated open-loop LLC transformer driver converter reference design provides four 18-V outputs up to a total of 6 W for traction-inverter applications. The LLC topology allows the transformer to have significant leakage inductance, but a much smaller primary-secondary (...)
Reference design
Ultra-wide Input Range (10.8V to 264V) Bias Power Supply Reference Design
The PMP11287 can handle 10.8VDC to 264VDC or 15VAC to 264VAC input voltage range and generate 12V/55mA output. With the use of UCC2813 PWM controller (up to 100% duty cycle) and Buck-boost topology, this ultra-wide input range power supply is made possible. Dimension of this board is 20mm (W) x (...)

Reference designs related to AC/DC & DC/DC controllers (external FET)

Use our reference design selection tool to find designs that best match your application and parameters.