US 12,191,849 B2
High-voltage power supply device
Haruki Osa, Kyoto (JP)
Assigned to SHIMADZU CORPORATION, Kyoto (JP)
Filed by Shimadzu Corporation, Kyoto (JP)
Filed on Sep. 23, 2022, as Appl. No. 17/951,700.
Claims priority of application No. 2021-192026 (JP), filed on Nov. 26, 2021.
Prior Publication US 2023/0170897 A1, Jun. 1, 2023
Int. Cl. H03K 17/567 (2006.01); H01F 19/04 (2006.01); H01J 49/10 (2006.01); H02M 7/217 (2006.01); H03K 17/06 (2006.01)
CPC H03K 17/567 (2013.01) [H01F 19/04 (2013.01); H02M 7/217 (2013.01); H03K 17/063 (2013.01); H01J 49/10 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A high-voltage power supply device comprising:
a voltage generation unit having a first voltage generation unit configured to output a DC high-voltage of positive polarity and a second voltage generation unit configured to output a DC high-voltage of negative polarity;
a switching unit using a semiconductor switching element, the switching unit including a first switching unit configured to output the DC high-voltage of positive polarity to a voltage output terminal when the first switching unit is in a conduction state and a second switching unit configured to output the DC high-voltage of negative polarity to the voltage output terminal when the second switching unit is in a conduction state;
a driver configured to drive a control terminal of the semiconductor switching element in the switching unit; and
a controller configured to control conduction/non-conduction of the first switching unit and the second switching unit via the driver,
wherein the driver includes:
a high-frequency transformer provided with a primary winding and a secondary winding, a distribution of a stray capacitance per number of unit turns of the primary winding between the primary winding and the secondary winding in an extension direction of the primary winding being symmetrical to a midpoint of the primary winding;
a rectifier configured to rectify an AC current induced in the secondary winding of the high-frequency transformer; and
a balanced output type high-frequency excitation unit configured to excite the primary winding of the high-frequency transformer differentially.