US 12,316,094 B2
Protective device for an electronic component connected to an interface
Juergen Mack, Goeppingen (DE); Mickael Segret, Stuttgart (DE); and Christoph Klee, Stuttgart (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/905,846
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Jan. 26, 2021, PCT No. PCT/EP2021/051705
§ 371(c)(1), (2) Date Sep. 8, 2022,
PCT Pub. No. WO2021/185503, PCT Pub. Date Sep. 23, 2021.
Claims priority of application No. 10 2020 203 591.1 (DE), filed on Mar. 20, 2020.
Prior Publication US 2023/0122579 A1, Apr. 20, 2023
Int. Cl. H02H 3/00 (2006.01); H02H 1/00 (2006.01); H02H 3/20 (2006.01); H02H 9/02 (2006.01)
CPC H02H 3/20 (2013.01) [H02H 1/0007 (2013.01); H02H 9/02 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A protective device for an electronic component that is connected to an electrical interface, the protective device comprising:
a detection apparatus configured to detect at least one of electrical voltage and electric current at the electronic component;
a monitoring apparatus; and
an electronic switch operably connected to the monitoring apparatus and connected in series with the electronic component, the electronic switch configured to (i) disconnect the electronic component from the electrical interface in response to an impermissibly high electrical voltage being applied to the electronic component, the impermissibly high electrical voltage being at least double a nominal voltage, and (ii) connect the electronic component to the electrical interface in response to the impermissibly high electrical voltage no longer being detected at the electronic component,
wherein the detection apparatus is configured as a current detection apparatus that is interconnected in series with the electronic component and the electronic switch,
wherein an electrical voltage drop is measured at the electronic component,
wherein a discrete latch circuit is operably connected to the current detection apparatus, the discrete latch circuit is configured to evaluate the detected electrical voltage drop,
wherein a state of the current detection apparatus is stored by the discrete latch circuit after the electronic component is disconnected, and
wherein the stored state is (i) a connected state in which the electronic component is connected to the electrical interface, and (ii) a disconnected state in which the electronic component is disconnected from the electrical interface.