Back to results
US 2003/0117752 A1Published application
Microprocessor-controlled DC to DC converter with fault protection
AssigneeDaimlerChrysler AG
InventorsStephen K. Gilbert, Qingchuan Li, David L. Simpson JR.
Life of this patent
Estimating the term…
Abstract
A DC/DC converter features a programmable controller in a feedback control loop thereof. The programmable controller enables easy changes to operating parameters by reprogramming the controller's application software. Additionally, the converter features a hardware-implemented fault protection circuit which shuts down the converter's switching transistor upon controller failure.
Claims11
A voltage converter comprising:
- a direct current input voltage source;
- a voltage transforming element having an input coupled to the input voltage source and an output presenting a voltage signal thereon;
- a switching element coupled to the voltage transforming element for intermittently interrupting current flow from the input voltage source to the voltage transforming element;
- a converter output coupled to the output of the voltage transforming element via a rectifier and adapted to present a converter output voltage to a load;
- and
- a programmable controller having an input coupled to the converter output and an output coupled to the switching element, the programmable controller operative to control switching states of the switching element in accordance with preselected, programmable operating parameters of the voltage converter.
3 more elements
A DC/DC voltage converter comprising:
- a direct current input voltage source;
- a transformer having primary and secondary windings, the primary winding being coupled to the input voltage source;
- a switching transistor coupled to the primary winding and operative in a first switching state to allow current flow from the input voltage source through the primary winding and operative in a second switching state to inhibit said current flow;
- a converter output coupled to the transformer's secondary winding via a rectification circuit and adapted to present a converter output voltage to a load;
- and
- a microprocessor-based controller having an input coupled to the rectification circuit and an output coupled to the switching transistor, the controller operative to selectively place the switching transistor in its first and second switching states in accordance with preselected, programmable operating parameters of the voltage converter.
3 more elements
Dependencies are inferred from the claim text.