DC-DC CONVERTER SYSTEM USING TWO-CHANNEL PWM IC HAVING OUTPUT VOLTAGE SEQUENCE CONTROL CIRCUIT

摘要

PURPOSE: A DC-DC converter system using a two-channel PWM(Pulse Width Modulation) IC having an output voltage sequence control circuit is provided to control the output delay time of the two-channel PWM IC by using an additional output voltage sequence control circuit. CONSTITUTION: A DC-DC converter system using a two-channel PWM IC having an output voltage sequence control circuit includes a two-channel PWM IC(11) and a DC-DC converter(12). The two-channel PWM IC(11) is used for outputting a two-channel voltage. The DC-DC converter(12) is used for outputting a DC voltage by using the two-channel voltage. The DC-DC converter system using a two-channel PWM IC having an output voltage sequence control circuit further includes an output voltage sequence control circuit(100). The output voltage sequence control circuit(100) is connected to a DTC(Dead Time Control) terminal of the second channel of the two-channel PWM IC in order to output an output voltage from the second channel of the two-channel PWM IC by varying the DTC terminal to a low level.