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Data Sheet
UCC28063 Natural Interleaving™ Transition-Mode PFC Controller With Improved Audible Noise Immunity
1 Features
- Input filter and output capacitor
ripple-current cancellation
- Reduced current ripple
for higher system reliability and smaller bulk capacitor
- Reduced EMI filter
size
- Phase management capability
- Fail-safe OVP with dual paths
prevents output overvoltage conditions by voltage-sensing failures
- Sensorless current-shaping
simplifies board layout and improves efficiency
- Advanced audible noise
performance
- Non-linear error-amplifier
gain
- Soft recovery on overvoltage
- Integrated brownout and dropout
handling
- Reduced bias currents
- Improved efficiency and design
flexibility over traditional single-phase continuous conduction mode (CCM)
- Inrush-safe current limiting:
- Prevents MOSFET
conduction during inrush
- Eliminates reverse
recovery events in output rectifiers
- Enables use of low-cost diodes
without extensive snubber circuitry
- Improved light-load
efficiency
- Fast, smooth transient
response
- Expanded system-level
protections
- 1A Source/1.8A sink gate
drivers
- –40°C to 125°C Operating
Temperature Range in a 16-Lead SOIC Package
2 Applications
- 100-W to 800-W power
supplies
- Gaming
- D-to-A set-top boxes
- Adapters
- LCD, Plasma and DLP™ TVs
- Home audio systems
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