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Balanced auxiliary on time generator for multiphase stackable constant on time control architecture
Balanced auxiliary on time generator for multiphase stackable constant on time control architecture
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机译:用于多相可堆叠恒定导通时间控制架构的平衡辅助导通时间发生器
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摘要
A control circuit configured to control a switching power supply including a ramp generator configured to generate a triangular waveform. A comparator is configured to generate a series of pulse width modulated (PWM) pulses at a first frequency and to regulate the switching power supply. The ramp generator includes a capacitor, a charging current source configured to provide a charging current to charge the capacitor, and a discharging current source configured to provide a discharging current to discharge the capacitor. The ramp generator also includes a closed loop current balancing current source configured to balance the currents from the charging and discharging current sources to establish a substantially zero direct current (DC) bias across the capacitor. The controller also includes a multi-phase configuration to provide a stackable multi-channel architecture.
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