Title:
SWITCHING METHOD AND DEVICE THEREFOR
Document Type and Number:
WIPO Patent Application WO/2014/034264
Kind Code:
A1
Abstract:
Although an FET (2) turns off when an external switch (11) is turned off, and an FET (1) of a drive circuit unit (7) turns on as the gate thereof is biased, no electricity from a power source (B) is supplied to a load (3) because the external switch (11) is off. When the external switch (11) is turned on, a controller (9a) of a control circuit unit (9) outputs a PMW signal to the gate of FET (2), and FET (2) turns on during an off-period of the PMW signal. Consequently, FET (1) performs on/off operations (off during an on-period and on during the off-period of the PMW signal) in synchronization with changes in signal level of the PMW signal. In addition, if FET (2) of the control circuit unit (9) becomes unable to turn on while the external switch (11) is on, the gate of FET (1) of the drive circuit unit (7) is kept at the bias potential, and FET (1) stays on.
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Inventors:
MORIMOTO MITSUAKI (JP)
OISHI EIICHIRO (JP)
OISHI EIICHIRO (JP)
Application Number:
PCT/JP2013/068355
Publication Date:
March 06, 2014
Filing Date:
July 04, 2013
Export Citation:
Assignee:
YAZAKI CORP (JP)
International Classes:
H01H47/32; H01H9/54; H03K17/695
Foreign References:
| JP2009289689A | 2009-12-10 | |||
| JPH1140028A | 1999-02-12 | |||
| JP2006114446A | 2006-04-27 | |||
| JP2006114446A | 2006-04-27 |
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (JP)
Hidekazu Miyoshi (JP)
Hidekazu Miyoshi (JP)
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