Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Current driver
Reexamination Certificate
2007-10-23
2007-10-23
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Current driver
C327S110000, C323S285000
Reexamination Certificate
active
11258128
ABSTRACT:
A semiconductor device for controlling a switching power supply is provided, which can reduce power consumption at a light load of the switching power supply and improve the efficiency of the power supply. During the intermittent switching operation of a switching element, when a return signal is outputted from a light load detection circuit within the set time of a transformer reset detection time setting circuit during intermittent stop, the switching operation of the switching element is restarted in response to a transformer reset signal from the transformer reset detection circuit after the return signal is outputted. When the return signal is outputted from the light load detection circuit during the intermittent stop after the set time of the transformer reset detection time setting circuit, the switching operation of the switching element is restarted regardless of the transformer reset signal only in response to the output of the return signal.
REFERENCES:
patent: 6134123 (2000-10-01), Yamada
patent: 6320763 (2001-11-01), Hosotani
patent: 6812682 (2004-11-01), Hachiya
patent: 6960906 (2005-11-01), Yamashita
patent: 7208985 (2007-04-01), Yamashita
patent: 08289542 (1996-11-01), None
Matsushita Electric - Industrial Co., Ltd.
Nguyen Hai L.
Steptoe & Johnson LLP
Wells Kenneth B.
LandOfFree
Semiconductor device for controlling switching power supply... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Semiconductor device for controlling switching power supply..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor device for controlling switching power supply... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3866011