| 摘要 |
The invention relates to a synchronous rectifier circuit (30) working as a high-efficiency DC/DC converter for mixed step-up/step-down applications, the circuit having a loop regulating structure and comprising a circuit portion (15) adapted to drive a power switch (Q7), and a comparator (25) adapted to enable the driving portion (15). Advantageously, the comparator has a wide pass-band for forcing prompt triggering of the regulation loop of the rectifier. <IMAGE>
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