UCC28070-Q1

illustrate

UCC28070 is an advanced power factor correction device that integrates two pulse-width modulators (PWM) operating 180°. The input and output ripple currents generated during this interleaved PWM operation are drastically reduced, and EMI filtering becomes easier and cheaper to perform. A significantly improved multiplier design provides a common reference current to ensure that two independent two PWM outputs match the average current mode control current amplifier while maintaining a stable, low-distortion sinusoidal input current.

Includes current UCC28070 containing multiple innovations in synthesizing and quantizing voltage feed-forward to facilitate performance enhancements in PF, efficiency, total harmonic distortion, and transient response.

characteristic

• Qualified automotive applications
• Interleaved average current mode PWM control
  Intrinsic current matching
• Advanced current synthesis current sensing
  Excellent efficiency
• High linear multiplier output with internal quantization
  Voltage feed-forward correction is close to the unified provident fund
• Programmable frequency (30 kHz to 300 kHz)
• Programmable maximum duty cycle clamp
• Programmable frequency jitter and magnitude
  Enhanced EMI reduction
  • Magnitude: 3 kHz to 30 kHz
  • Rate: up to 30 kHz
• External clock synchronization capability
• Enhanced load and line transient response pass
  Amplifier output voltage slew rate correction
• Programmable peak current limit
• Bias power supply undervoltage lockout, overvoltage protection, open loop
  Detection, and PFC, enable monitoring
• External PFC - Disable interface
• Open circuit protection and VNAC on VSENSE feet
• Programmable soft-start
• 20-pin TSSOP package