Semi-bridge conrol signal generating circuit and method thereof

A technology for controlling signals and generating circuits, which is applied in the direction of converting irreversible DC power input into AC power output, and can solve the problems that the half-bridge control chip cannot directly drive the electronic switch.
CN1677826AInactive Publication Date: 2005-10-05NIKO SEMICON
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
NIKO SEMICON
Publication Date
2005-10-05
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

Connected to primary side of a transformer, two electronic switches in use for control of turning on or off two switches convert DC power supply to AC power supply for a load to use. The signal generation circuit includes following parts: a logic unit of AND gate, a NAND gate, a circuit protection unit, a waveform generator, clock generator, soft starting up unit, a sample hold unit, first and second comparators etc. the invention is able to direct control and drive operation of diverter switch in semi bridge type circuit architecture.
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Description

technical field

[0001] The invention relates to a half-bridge control signal generation circuit and method thereof, in particular to a circuit and method capable of outputting control signals to control the action of a switch to achieve power conversion and signal transmission. Background technique

[0002] In the increasingly complex electronic and computer devices, the power supply device is more important. The power supply device can be divided into two categories: linear type and switching type. Since the linear type has many disadvantages, it is therefore At present, the power supply devices produced in the industry all use the switching type to achieve.

[0003] The power supply (Power Supply) of the TFT panel backlight mainly uses an inverter circuit (Inverter Circuit) that converts direct current (DC) into alternating current (AC) to achieve energy conversion and drive the light emission of cold cathode fluorescent lamps (CCFL). The known inverter circuit (Inverter ...

Claims

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