A switch-over type control device for output power compensation

A technology for output power and control devices, which is applied in the direction of output power conversion devices, control/regulation systems, and conversion equipment with intermediate conversion to AC, and can solve problems such as aggravated output power differences
CN100514814CInactive Publication Date: 2009-07-15SYST GEN
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SYST GEN
Publication Date
2009-07-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The related switch controller for output power compensation comprises: an oscillator to output an impulse signal, a waveform generation unit to receive the impulse signal and output a power limit signal, an impedance unit to decide the slope of the limit signal, a comparison unit to output a reset signal, and an output unit to receive the reset signal and impulse signal and output a drive signal to the power switch. This invention can obtain same output power for different input power voltages.
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Description

technical field

[0001] The invention relates to a switchable control device for output power compensation through impedance adjustment, in particular to a switchable control device for output power compensation in a power supply by adjusting the resistance of an impedance unit. Background technique

[0002] Pulse Width Modulation is an existing technique for controlling and stabilizing the output power of a power supply. The power supply must provide various protection functions, such as over-voltage, over-current and over-power protection. Overcurrent and overpower protection are used to protect the power supply and peripheral circuits to avoid permanent damage. In the over-power protection of the power supply, through the design of the output power compensation function, the power supply can have the same overload protection point under high and low input voltage.

[0003] see figure 1 , which is a schematic diagram of an existing power supply circuit. In the power sup...

Claims

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