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1. (WO2017202569) PRIMARY-PULSED SWITCHING POWER SUPPLY

Pub. No.:    WO/2017/202569    International Application No.:    PCT/EP2017/060078
Publication Date: Fri Dec 01 00:59:59 CET 2017 International Filing Date: Fri Apr 28 01:59:59 CEST 2017
IPC: H02H 9/04
H02H 7/04
H02H 3/20
H02H 7/122
Applicants: ENDRESS+HAUSER SE+CO. KG
Inventors: JEHLE, Max
VEERACHARY, Vinay Channagiri
Title: PRIMARY-PULSED SWITCHING POWER SUPPLY
Abstract:
The invention relates to a primary-pulsed switching power supply (1) for converting an input voltage (Ue) into an output voltage (Ua), comprising at least: - a fuse (5) arranged in the circuit branch (2) on the primary side, which is designed to interrupt a current flow on the primary side so that the circuit branch (2) on the primary side is substantially voltage-free; - a first switching element (6) that can be switched by a control signal and is arranged in the circuit branch (2) on the primary side relative to the fuse (5) such that it triggers the fuse (5) on the primary side when it is switched by the control signal; - a first feedback element (7) which is designed to guide the control signal from the circuit branch (4) on the secondary side via galvanic separation (3) to the first switching element (6) arranged on the primary side and, in the event of a fault, in particular in the event of an overvoltage, to switch the first switching element (6) on the basis of the control signal so that the circuit branch (2) on the primary side is substantially voltage-free.