发明名称 |
Power management system for Universal Serial Bus |
摘要 |
A power management system (20) adjusts a first output voltage (201) delivered to a load (19) and adjusts a second output voltage (202) delivered to a battery (18). The power management system includes an error amplifier (223) for comparing the first output voltage (201) with a first voltage reference (V RBUS_min ) indicative of an operating voltage of the load and for accordingly generating a first error signal (226). The power management system further includes a DC/DC converter (230) for adjusting the first output voltage and the second output voltage by adjusting a duty cycle of the DC/DC converter (230) and an error generator (227) for controlling the duty cycle based on the first error signal (226). If the first output voltage is lower than the first voltage reference, the error generator reduces the duty cycle and a charging current of the battery (18)based on the first error signal. |
申请公布号 |
EP2602922(A3) |
申请公布日期 |
2014.07.09 |
申请号 |
EP20120195782 |
申请日期 |
2012.12.06 |
申请人 |
O2 MICRO, INC. |
发明人 |
POPESCU-STANESTI, VLAD MIHAIL DAN;KOBILDJANOV, OLEG;PATRU, CLAUDIU;ROMAN, ANDREI-GEORGE |
分类号 |
H02M1/32;H02J7/00;H02M3/156 |
主分类号 |
H02M1/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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