Title: Load driving device
Application Number: 200610143943 Application Date: 2006.11.07
Publication Number: 1964191 Publication Date: 2007.05.16
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H03K17/687;H03K17/08;H03K17/0814
Applicant(s) Name: Yazaki Corp. Address:
Inventor(s) Name: Ohshima Shunzou
Attorney & Agent: xiakai zhongqiang
Abstract:
    A load driving device for controlling a driving and a stop of a load through on/off switching of a semiconductor device under the control of a driving circuit, includes an overcurrent detecting unit that compares with a prescribed judgment voltage, an inter-electrode voltage which is generated when a current flows between a first electrode and a second electrode of the semiconductor device, and judges that an overcurrent is flowing through the semiconductor device when the inter-electrode voltage is higher than the judgment voltage, and a diagnosing unit that performs a diagnosis as to whether the overcurrent detecting unit is operating normally in a state that the semiconductor device is a on-state. When the diagnosing unit judges that the overcurrent detecting unit is not operating normally, the diagnosing unit outputs an instruction signal for turning off the semiconductor device, to the driving circuit.
Time: 8
<- Previous Patent:Capacitive touch-sensitive switch   |  Next Patent:Circuit arrangement and method to... ->