Patent ID: 9443684
Filing Date: 2016-09-13
CPC Classification: H01H

Claim Text:
1. A charging-discharging control apparatus of a DC link capacitor in an electric power steering relay, comprising: a DC link capacitor configured to turn-on the electric power steering relay by charging an electric charge, a first switching unit configured to control charging of the DC link capacitor by being shorted between the DC link capacitor and a power supply unit; and a second switching unit configured to control discharging of the DC link capacitor by being shorted between the DC link capacitor and a ground, wherein the first switching unit includes at least one transistor to control the charging of the DC link capacitor using a collector current thereof, and the second switching unit includes at least one transistor to control the discharging of the DC link capacitor using a collector current thereof, wherein the first switching unit includes: wherein the second switching unit includes: