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Data Sheet
UCC28070A Extended Frequency Range (10kHz to 300kHz), Interleaving Continuous Conduction
Mode PFC Controller
1 Features
- 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
(10kHz to 300kHz) - Programmable maximum duty-cycle clamp
- Programmable frequency dithering rate and
magnitude for enhanced EMI reduction
- Magnitude: 3kHz to 30kHz
- Rate: Up to 30kHz
- External clock synchronization capability
- Enhanced load and line transient response through
slew-rate correction of voltage amplifier output
current
- Programmable peak current limiting
- Bias-supply UVLO, overvoltage protection,
open‑loop detection, and PFC-enable
monitoring
- External PFC-disable interface
- Open-circuit protection on VSENSE and
VINAC pins - Programmable soft-start
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