UCC28070A
Overview
The UCC28070A device is an extended frequency range derivative of the UCC28070 device, capable of operating at low switching frequencies desired for IGBT power-switch based PFC converters in highpower applications. The UCC28070A device is capable of operating at frequencies from 10 kHz to 300 kHz, thus extending the range of operation compared to the UCC28070 device whose minimum operating frequency was limited to 30 kHz.
- 1 Interleaved Average Current-Mode PWM Control With Inherent Current Matching
- Advanced Current Synthesizer Current Sensing for Superior Efficiency
- Highly-Linear Multiplier Output With Internal Quantized Voltage Feed-Forward Correction for Near-Unity PF
- Extended Range Programmable Frequency (10 kHz to 300 kHz)
- Programmable Maximum Duty-Cycle Clamp
- Programmable Frequency Dithering Rate and Magnitude for Enhanced EMI Reduction - Magnitude: 3 kHz to 30 kHz - Rate: Up to 30 kHz
- External Clock Synchronization Capability
- Enhanced Load and Line Transient Response through Voltage Amplifier Output Slew-Rate Correction
- Programmable Peak Current Limiting
- Bias-Supply UVLO, Overvoltage Protection, Open‑Loop Detection, and PFC-Enable Monitoring
