| 摘要 |
The present invention relates to a control method of a synchronous rectification type low voltage DC-DC converter (LDC). The control method includes: a parameter input step where a PWM generator receives a parameter of a direct current power supplier; an inner parameter calculation step where the PWM generator calculates an internal parameter by using the parameter of the direct current power supplier; an operating mode selection step where the PWM generator calculates a PWM output signal by using the internal parameter and selecting an operating mode of a synchronous rectifier switching device; and a signal output step where the PWM generator outputs a PWM signal controlling power switching devices (Q1, Q2, Q3, Q4) and a PWM signal controlling the synchronous rectifier switching devices (SR1, SR2) according to the operating mode. |
