DC-DC converter device and method for operating the dc-dc...

Details DC-DC converter device and method for operating the dc-dc... DC-DC converter device and method for operating the dc-dc...

2006-04-21

2009-06-16

Nguyen, Matthew V (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C307S010100

Reexamination Certificate

active

07548042

ABSTRACT:
A DC-DC converter system having a DC-DC converter including a power transistor and a control unit is provided, which control unit provides control signals for triggering the power transistor. The DC-DC converter is operable in two operating modes: in a first operating mode, the DC-DC converter operates at high efficiency; and in a second operating mode, the DC-DC converter operates at low efficiency. The high power loss released in the second operating mode is used in the warm-up phase after the start of a motor vehicle engine as an additional heating system.

REFERENCES:
patent: 4890073 (1989-12-01), Flachenecker et al.
patent: 6487094 (2002-11-01), Weng et al.
patent: 7015678 (2006-03-01), Plankensteiner

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