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It is well known from control theory that 2nd-order boundary control is able to achieve a faster transient response over the conventional hysteretic control. However, no available monolithic 2nd-order boundary controller for buck converter has not been found. The main challenges of designing this controller are the implementation of the non-invasion output capacitor current sensor and the hardware...
Monolithic PWM voltage-mode buck converters with a novel Pseudo-Type III (PT3) compensation are presented. The proposed compensation maintains the fast load transient response of the conventional Type III compensator; while the Type III compensator response is synthesized by adding a high-gain low-frequency path (via error amplifier) with a moderate-gain high-frequency path (via bandpass filter) at...
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