专利名称：DC/DC converter, control circuit and control
method thereof, power supply, poweradapter and electronic apparatus using thesame
发明人：Yoshinori Sato,Satoru Nate申请号：US14023983申请日：20130911公开号：US09190916B2公开日：20151117
专利附图：
摘要：A control circuit of a DC/DC converter includes: a pulse modulator configured
to generate a pulse signal; and a driver configured to switch a switching transistor basedon the pulse signal. The pulse modulator includes an on signal generator to generate anon signal. The on signal generator includes: a bottom detection comparator configuredto compare a voltage of one end of an auxiliary winding with a predetermined thresholdvoltage and generate a bottom detection signal; a first time-out circuit configured togenerate a first time-out signal asserted when the bottom detection signal is notasserted; a second time-out circuit configured to generate a second time-out signalasserted when the bottom detection signal is not asserted; and a logic part configured togenerate the on signal based on the bottom detection signal, the first time-out signaland the second time-out signal.
申请人：ROHM CO., LTD.
地址：Kyoto JP
国籍：JP
代理机构：Cantor Colburn LLP
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