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Drive Arrangement

  • US 20150088384A1
  • Filed: 01/25/2013
  • Published: 03/26/2015
  • Est. Priority Date: 04/23/2012
  • Status: Active Grant
First Claim
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1. A drive arrangement for driving a motor in a vehicle safety device, the arrangement comprising:

  • a power supply input configured to be connected to a primary power source,an auxiliary power source,a DC-DC converter circuit configured to operate in at least a voltage boost mode, the DC-DC converter circuit having a DC-DC converter circuit input that is connected to the auxiliary power source,a motor driver circuit having a motor driver circuit input that is connected to an output of the DC-DC converter circuit and to the power supply input, anda control unit connected to the DC-DC converter circuit, the control unit being configured to activate the DC-DC converter circuit to operate in the voltage boost mode to increase the voltage to the motor driver circuit input if the voltage at the motor driver circuit input is below a predetermined level.

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