Flyback controllers
Achieve enhanced efficiency, low EMI and low standby power
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Active-clamp and ZVS flyback controllers
Our flyback controllers feature a dissipative clamp replaced with a lossless active clamp, which is used to achieve zero-voltage switching (ZVS).
PWM and flyback controllers
Our fixed-frequency flyback controllers are simple, fixed-frequency control integrated circuits that can control almost any power topology, including flyback, boost, push-pull, forward and buck.
Offline flyback converters
Our offline flyback converters have a 700-V integrated field-effect transistor configurable as a flyback or a high-voltage buck converter.
New products
Current-mode flyback controller with secondary-side regulation (SSR) for offline applications
Approx. price (USD) 1ku | 0.12
Automotive, 42-VIN primary side regulation flyback controller with low IQ and low EMI
Approx. price (USD) 1ku | 1.2
42-VIN primary side regulation flyback controller with low IQ and low EMI
Approx. price (USD) 1ku | 1.1
100-VIN primary side regulation flyback controller with low IQ and low EMI
Approx. price (USD) 1ku | 1.2
Automotive, 100-VIN primary-side regulation flyback controller with low IQ and low EMI
Approx. price (USD) 1ku | 1.4
Power trends
Minimize your solution size while maximizing your efficiency
Our latest flyback controllers enable zero-voltage switching (ZVS) and active clamp flyback (ACF) topologies which achieve improved efficiency while increasing power density and shrinking the size of the power supply. ZVS drastically reduces switching losses which in turn enables higher switching frequency capability and reduces the size of the magnetics. ACF also improves on efficiency by replacing the passive clamp with an active clamp, recovering the leakage energy, and delivering it to the output. Finally, integrated features further help reduce the external component count and simplify power supply design.
Ultra-low standby power for low power consumption
Our solutions are capable of offering ultra-low standby power (< 5 mW at no load). This not only achieves but surpasses energy efficiency requirements from the Code of Conduct (CoC) and Department of Energy (DoE) in household goods and appliances. Additionally, ultra-low standby power helps reduce power consumption and extend battery life in HV battery applications such as HEV/EV and battery-back up units.
Technical resources
Understanding flyback basics
Designing a Robust Traction Inverter Redundant Power Supply From 800 V Battery (Rev. C)
Troubleshooting TI PSR controllers
Discover featured applications
Reduce solution size and standby power while maximizing efficiency in appliance applications with our flyback controllers
Our flyback controllers and converters help achieve high power density and efficiency in appliance applications, while also passing electromagnetic interference (EMI) compliance tests.
Benefits:
- Valley switching to reduce switching losses and minimize current spikes when turning on the metal-oxide semiconductor field-effect transistor.
- Frequency dithering to reduce EMI filter costs and measured EMI noise.
- Isolated (flyback) and nonisolated (buck) topologies.
- FET-integrated features to further reduce external components, simplify power-supply designs and increase power density.
Featured resources
- Troubleshooting TI PSR controllers – Application note
- Flyback Aux Winding OVP and UVLO Fault Sensing Design and Troubleshooting Tips – Application note
Support wide-input-voltage hybrid electric vehicle (HEV)/EV inverter applications with our flyback controllers
Our primary-side-regulated flyback controllers include a redundant power supply that operates directly off of a high-voltage battery supply.
Benefits:
- A 700-V internal startup switch supports rail generation from low- and high-voltage batteries.
- 5-mW standby power extends high-voltage battery life and reduces overall power consumption.
Featured resources
- UCC28730-Q1 – Zero-power standby PSR flyback controller for automotive
- UCC28700-Q1 – Compact primary-side regulation PWM controller with automotive grade
- LM5021-Q1 – Automotive 30V, 1MHz current mode PWM controller
- Designing a Robust Traction Inverter Redundant Power Supply From 800 V Battery (Rev. C) – Application brief
- Minimize Standby Consumption for UCC287XX Family – Application note
Minimize solution size while maximizing efficiency with our flyback controllers
Our low-cost, high-efficiency flyback controllers enable high power density in grid infrastructures, even those in harsh environments.
Benefits:
- Valley switching to reduce switching losses and provide up to 1% output regulation accuracy.
- Support for wide input-voltage-range designs (with a 700-V internal startup switch) to address different application needs, reduce the number of external components, and increase power density.
- Isolated (flyback) and nonisolated (buck) topologies.
Featured resources
- Flyback Aux Winding OVP and UVLO Fault Sensing Design and Troubleshooting Tips – Application note
- Minimize Standby Consumption for UCC287XX Family – Application note
Design & development resources
UCC28782 active clamp flyback converter 65-W USB-C PD EVM with LMG2610 integrated GaN half-bridge
UCC28782EVM-030 demonstrates high-efficiency and high-density for a 65-W USB Type-C™ power delivery (PD) off-line adapter using the UCC28782 active-clamp flyback controller. The input supports a universal 90 Vac to 264 Vac and the single output can be set to 5 V, 9 V and 15 V all at 3-A (...)