US 12,244,236 B2
Active clamp buck and active clamp flyback power converter
Emiliano Gudino Carrizales, Ludwigsburg (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/914,512
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Jan. 21, 2021, PCT No. PCT/EP2021/051313
§ 371(c)(1), (2) Date Sep. 26, 2022,
PCT Pub. No. WO2021/190800, PCT Pub. Date Sep. 30, 2021.
Claims priority of application No. 10 2020 203 991.7 (DE), filed on Mar. 27, 2020.
Prior Publication US 2023/0134977 A1, May 4, 2023
Int. Cl. H02M 3/335 (2006.01); H02M 1/00 (2006.01)
CPC H02M 3/33576 (2013.01) [H02M 1/0095 (2021.05); B60L 2210/10 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A DC-DC voltage converter (1) for transferring power between a high-voltage grid and a low-voltage grid, the DC-DC voltage converter (1) comprising:
an input connection (10), which is designed to be coupled to a DC voltage source (2);
a transformer (T) with a primary side (Pri) and a secondary side (Sec);
a capacitor (C);
a first switching element (S1), a second switching element (S2), a third switching element (S3) and a fourth switching element (S4);
wherein a first connection (21) of the primary side (Pri) of the transformer (T) is electrically coupled to a first connection element (11) of the first input connection (10);
a first connection of the first switching element (S1) is connected to a second connection (22) of the primary side (Pri) of the transformer (T) and a second connection of the first switching element (S1) is connected to a second connection element (12) of the input connection (10);
a first connection of the second switching element (S2) is connected to the first connection (21) of the primary side (Pri) of the transformer (T) and a second connection of the second switching element (S2) is connected to a node (K);
a first connection of the capacitor (C) is connected to the node (K) and a second connection of the capacitor (C) is connected to the second connection (22) of the primary side (Pri) of the transformer (T); and
a first connection of the third switching element (S3) is connected to the node (K), a second connection of the third switching element (S3) is connected to a first connection of the fourth switching element (S4) and a second connection of the fourth switching element (S4) is connected to the second connection element (12) of the input connection (10).