UCC28710D

AC DC Converters, Offline Switchers Overview

The UCC28710D is a constant-voltage, constant-current PWM controller for isolated flyback converters. It operates within a supply voltage range of 9 V to 35 V and supports a maximum switching frequency of 106 kHz. The device features a SOIC-7 package with a maximum duty cycle of 42.5%. It provides an output drive current of 25 mA and functions across a temperature range from -40°C to +125°C. The controller utilizes primary-side regulation to eliminate optocouplers.

AC DC Converters, Offline Switchers Feature Summary

• Primary-side regulation eliminates the need for optocouplers and secondary feedback components
• Valley-switching operation in discontinuous conduction mode reduces switching losses
• Programmable cable compensation allows precise output voltage adjustment at the load
• Integrated 700 V startup switch enables high-voltage direct connection

AC DC Converters, Offline Switchers Applications

• USB chargers and adapters
• Low standby power AC/DC converters
• High power density charger designs

AC DC Converters, Offline Switchers Procurement Notes

Verify the suffix 'D' indicates the tube packaging variant rather than the tape-and-reel configuration. Confirm the specific revision level matches design requirements. Ensure thermal management aligns with the SOIC-7 package limitations. Cross-reference the datasheet version for any pinout or electrical parameter updates before finalizing procurement orders.

AC DC Converters, Offline Switchers Selection Notes

Select this component when primary-side regulation is required to reduce bill-of-materials cost. The programmable cable compensation distinguishes it from variants with fixed compensation or NTC interfaces. Verify that the 106 kHz maximum frequency meets EMI constraints. Ensure the 25 mA drive current suffices for the target MOSFET gate capacitance.

AC DC Converters, Offline Switchers Part Context

This part belongs to the UCC2871x family of primary-side regulated controllers. It shares core architecture with UCC28711, UCC28712, and UCC28713. The key differentiator is the user-programmable cable compensation feature. Other family members offer fixed compensation or NTC temperature sensing options instead.

AC DC Converters, Offline Switchers Replacement Considerations

UCC28710DR serves as the identical functional alternative in tape-and-reel packaging. UCC28711, UCC28712, and UCC28713 are compatible but feature fixed cable compensation and NTC interfaces. Verify pin compatibility and compensation settings when substituting.