US 12,334,810 B2
Controller for a DC-to-DC converter, DC-to-DC converter device, and method for actuating a DC-to-DC converter
Gholamabas Esteghlal, Stuttgart-Weilimdorf (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 18/254,111
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Oct. 6, 2021, PCT No. PCT/EP2021/077571
§ 371(c)(1), (2) Date May 23, 2023,
PCT Pub. No. WO2022/117246, PCT Pub. Date Jun. 9, 2022.
Claims priority of application No. 10 2020 215 123.7 (DE), filed on Dec. 1, 2020.
Prior Publication US 2024/0006983 A1, Jan. 4, 2024
Int. Cl. H02M 1/00 (2007.01); H02M 1/088 (2006.01); H02M 3/335 (2006.01)
CPC H02M 1/088 (2013.01) [H02M 1/0009 (2021.05); H02M 1/0025 (2021.05); H02M 3/33523 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A control device (20) for a DC-to-DC converter (10) configured to convert an input DC voltage (U_in) and an output DC voltage (U_out), wherein the control device (20) is configured to:
calculate a first ratio between an input current (I_in) and an output current (I_out) of the DC-to-DC converter (10) using a duty cycle (D) employed for actuating the DC-to-DC converter (10),
calculate a second ratio between the input current (I_in) and the output current (I_out) of the DC-to-DC converter (10) using an input voltage (U_in) and an output voltage (U_out) of the DC-to-DC converter (10), and
detect a malfunction if the calculated first ratio and the calculated second ratio between input current (I_in) and output current (I_out) of the DC-to-DC converter (10) deviate by more than a specified threshold value.