Title:
PROTECTIVE CIRCUIT FOR REVERSE CONNECTED BATTERY
Document Type and Number:
Japanese Patent JP3387631
Kind Code:
B2
Abstract:
PURPOSE: To prevent it from being damaged by a reversely connected battery biasing a MOSFET into nonconductive condition, when the battery is reverse connected.
CONSTITUTION: When a battery 11 is connected normal, a MOSFET 1 is turned off, with its source connected to a positive electrode and its gate connected to a ground. Therefore, the MOSFET 10 is turned on, and a current is supplied to load 12. When the battery 12 is reverse connected, the gate voltage of the MOSFET 1 becomes a positive voltage, so that the MOSFET 1 is turned on. Hereby, the MOSFET 10 is turned off to prevent the current from flowing to load 12. Therefore, it is prevented from being damaged by the reverse connected battery.
Inventors:
Richard Kay Williams
Lorimar Kay Hill
Lorimar Kay Hill
Application Number:
JP13494294A
Publication Date:
March 17, 2003
Filing Date:
May 24, 1994
Export Citation:
Assignee:
SILICONIX INCORPORATED
International Classes:
H01L27/04; H01L21/822; H01M2/34; H01M10/42; H02H7/18; H02H11/00; H02J7/00; (IPC1-7): H02H11/00
Domestic Patent References:
| JP5579625A | ||||
| JP63121483A | ||||
| JP63312665A | ||||
| JP142565A | ||||
| JP191625A | ||||
| JP213115A | ||||
| JP2179223A |
Other References:
【文献】米国特許4835649(US,A)
【文献】米国特許4862310(US,A)
【文献】米国特許4992683(US,A)
【文献】米国特許5109162(US,A)
【文献】米国特許5156989(US,A)
【文献】西独国特許出願公開3535788(DE,A1)
【文献】西独国特許出願公開3930091(DE,A1)
【文献】欧州特許出願公開495142(EP,A1)
【文献】米国特許4862310(US,A)
【文献】米国特許4992683(US,A)
【文献】米国特許5109162(US,A)
【文献】米国特許5156989(US,A)
【文献】西独国特許出願公開3535788(DE,A1)
【文献】西独国特許出願公開3930091(DE,A1)
【文献】欧州特許出願公開495142(EP,A1)
Attorney, Agent or Firm:
Youichi Ohshima
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