Title:
SHORTING PROTECTION CIRCUIT FOR POWER SWITCH
Document Type and Number:
WIPO Patent Application WO/2021/040153
Kind Code:
A1
Abstract:
The present invention relates to a shorting protection circuit for a power switch, comprising: a desaturation detection unit, which senses the voltage (VDS) between a drain (D) terminal and a source (S) terminal of a power switch so as to detect whether the power switch is no longer in a saturation state, and generates a control signal for forcibly turning off the corresponding switch when detecting a desaturation state of the power switch; and a voltage reduction unit for limiting the current flowing through the power switch by reducing the gate driving voltage (VGS) of the power switch to a predetermined voltage, while the desaturation state is detected.
Inventors:
KIM JONG HYUN (KR)
KIM KI HYUN (KR)
SEO KIL SOO (KR)
LEE KYOUNG HO (KR)
SHIM MIN SEOB (KR)
KIM KI HYUN (KR)
SEO KIL SOO (KR)
LEE KYOUNG HO (KR)
SHIM MIN SEOB (KR)
Application Number:
PCT/KR2019/018072
Publication Date:
March 04, 2021
Filing Date:
December 19, 2019
Export Citation:
Assignee:
KERI KOREA ELECTROTECHNOLOGY RES INST (KR)
International Classes:
H03K17/082; H03K17/16
Foreign References:
| KR20180098531A | 2018-09-04 | |||
| JP2006295326A | 2006-10-26 | |||
| JP2011172446A | 2011-09-01 | |||
| KR20160070516A | 2016-06-20 | |||
| KR20170006291A | 2017-01-17 |
Attorney, Agent or Firm:
HMP IP GROUP (KR)
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