发明名称 |
ADAPTIVE DELAY CONTROL CIRCUIT FOR SWITCHED MODE POWER SUPPLY |
摘要 |
A switched mode power supply comprises a first switch coupled to an input power source, a second switch coupled to ground, and an output filter coupled to a phase node defined between the first and second switches. The first and second switches are responsive to a pulse width modulated signal to thereby regulate power provided to the output filter. A controller is provided in a feedback loop that monitors operation of the first and second switches and delays activation of one of the first and second switches to preclude simultaneous conduction. The controller comprises at least one delay control circuit adapted to delay delivery of the pulse width modulated signal to at least one of the first and second switches. The delay control circuit detects a phase difference between state transitions of the first and second switches and provides a delay corresponding to a magnitude of the phase difference. |
申请公布号 |
WO2005055404(A3) |
申请公布日期 |
2005.12.22 |
申请号 |
WO2004US37765 |
申请日期 |
2004.11.12 |
申请人 |
POWER-ONE LIMITED;CHAPUIS, ALAIN |
发明人 |
CHAPUIS, ALAIN |
分类号 |
G05F1/40;H02M;H02M1/38;H02M3/158 |
主分类号 |
G05F1/40 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|