19 High-Speed Analog Comparator with Slope Compensation DAC

The High-Speed Analog Comparator with Slope Compensation Digital to Analog Converter (DAC) provides a method to monitor voltage, current and other critical signals in a power conversion application that may be too fast for the CPU and ADC to capture. The analog comparator module can be used to implement Peak Current mode control, Critical Conduction mode (variable frequency) and Hysteretic Control mode.

The High-Speed Analog Comparator with Slope Compensation DAC consists of the following key features:

  • Rail-to-Rail Analog Comparator
  • Programmable Comparator Hysteresis
  • Programmable Output Polarity
  • Interrupt Generation Capability
  • Dedicated 12-bit Resolution Pulse Density Modulation (PDM) Digital-to-Analog Converter (DAC) for each Analog Comparator
  • Multimode Multipole RC Output Filter:
    • Transition mode: provides the fastest response
    • Fast mode: for tracking DAC slopes
    • Steady-State mode: provides 12-bit resolution
  • Dedicated Support for the Following Modes:
    • Slope Generation
    • Hysteretic Control
    • Triangular Wave
  • Functional Support for the High-Speed PWM Module Which Includes:
    • PWM duty cycle control
    • PWM period control
    • PWM Fault detect