A control circuit for staggered parallel switching power supply

The present invention provides a control circuit staggered parallel switching power supply, said switching power supply comprises two interleaved voltage regulating circuit, said input termination interleaved parallel switching power supply input, the voltage adjustment circuit for lifting or lowering the voltage of the input power source, and by interleaving said higher-quality output terminal DC voltage in parallel switching power supply, the control circuit includes a feedback compensation signal generation circuit, and a first path switch control circuit a second path switch control circuit. The present invention provides a control circuit for parallel switching power supply can be interleaved two phase voltage adjustment circuit in the main switch to force the modulation is 180 °, the solution of the control constant on-time switching power supply used in staggered parallel , the problem is difficult to achieve two voltages staggered in parallel between the circuit adjustment.