Frequency Compensation Based on Dual Signal Paths for Voltage-Mode Switching Regulators
A frequency compensation method for voltage-mode switching regulators is disclosed. A lowpass filter and a bandpass filter are employed in the two signal paths into the dual inputs of PWM comparators. In one embodiment, two zeros are generated to compensate for the L-C output filter poles. Stable operation, low output voltage ripple and fast load transient response are achieved; while the power consumption of error amplifier and the area for implementing on-chip passive components are greatly reduced.
Countries or Regions:
USA
Invention Code:
TTC.PA.363
Contact Us:
okt@ust.hk
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Category:
TAP - Microelectronics
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