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公开(公告)号：US10176913B2
公开(公告)日：2019-01-08
申请号：US15071034
申请日：2016-03-15
Applicant: Renesas Electronics Corporation
Inventor： Satoshi Kondo , Kazuaki Kubo , Noriyuki Itano
Abstract: An output driving circuit outputs an output current to a solenoid incorporated in a vehicle through an output terminal. A detection resistor connected between the output terminal and the output driving circuit. An amplification unit configured to output an analog detection signal generated by amplifying a voltage between both ends of the detection resistor. A current generation circuit configured to output a reference current. A reference resistor connected between the current generation circuit and a ground and configured to output a reference voltage according to the reference current. An A/D converter configured to convert the analog detection signal into a digital detection signal using the reference voltage as a reference. A control circuit configured to control the output current output from the output driving circuit according to the digital detection signal.
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公开(公告)号：US20190080830A1
公开(公告)日：2019-03-14
申请号：US16185194
申请日：2018-11-09
Applicant: Renesas Electronics Corporation
Inventor： Satoshi Kondo , Kazuaki Kubo , Noriyuki Itano
Abstract: A semiconductor device includes an output driving circuit configured to output an output current to an output terminal; a detection resistor connected between the output terminal and the output driving circuit; an amplification unit configured to output an analog detection signal generated by amplifying a voltage between both ends of the detection resistor; a current generation circuit configured to output a reference current; a reference resistor connected between the current generation circuit and a ground and configured to output a reference voltage according to the reference current; an A/D converter configured to convert the analog detection signal into a digital detection signal using the reference voltage as a reference; and a control circuit configured to control the output current output from the output driving circuit according to the digital detection signal. The detection resistor has a same temperature characteristics as the reference resistor.
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公开(公告)号：US10910136B2
公开(公告)日：2021-02-02
申请号：US16185194
申请日：2018-11-09
Applicant: Renesas Electronics Corporation
Inventor： Satoshi Kondo , Kazuaki Kubo , Noriyuki Itano
Abstract: A semiconductor device includes an output driving circuit configured to output an output current to an output terminal; a detection resistor connected between the output terminal and the output driving circuit; an amplification unit configured to output an analog detection signal generated by amplifying a voltage between both ends of the detection resistor; a current generation circuit configured to output a reference current; a reference resistor connected between the current generation circuit and a ground and configured to output a reference voltage according to the reference current; an A/D converter configured to convert the analog detection signal into a digital detection signal using the reference voltage as a reference; and a control circuit configured to control the output current output from the output driving circuit according to the digital detection signal. The detection resistor has a same temperature characteristics as the reference resistor.
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