POWER CONVERSION DEVICE, ISOLATED DRIVING CIRCUIT, AND ISOLATED DRIVING METHOD
First Claim
1. An isolated driving circuit for driving a power converter, wherein the power converter comprises a driving ground, a reference ground and at least one power switch, the power converter being configured to generate an output signal according to an input signal, the output signal being electrically coupled to the reference ground, and the at least one power switch being electrically coupled to the driving ground, the isolated driving circuit comprising:
- a control module configured to generate a first pulse width modulation signal and a second pulse width modulation signal according to the output signal;
a transformer configured to receive the first pulse width modulation signal and the second pulse width modulation signal to generate a first control signal;
a rectifying circuit configured to generate a second control signal according to the first control signal; and
a driving auxiliary circuit configured to generate a driving control signal according to the second control signal, so as to drive the at least one power switch.
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Accused Products
Abstract
A power conversion device, an isolated driving circuit, and an isolated driving method are disclosed herein. The isolated driving circuit includes a control module, a transformer, a rectifying circuit, and a driving auxiliary circuit. The control module is configured to generate a first pulse width modulation (PWM) signal and a second PWM signal according to the output signal. The transformer is configured to receive the first and second pulse PWM signals to generate a first control signal. The rectifying circuit is configured to generate a second control signal according to the first control signal. The driving auxiliary circuit is configured to generate a driving control signal according to the second control signal to drive the at least one power switch.
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Citations
23 Claims
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1. An isolated driving circuit for driving a power converter, wherein the power converter comprises a driving ground, a reference ground and at least one power switch, the power converter being configured to generate an output signal according to an input signal, the output signal being electrically coupled to the reference ground, and the at least one power switch being electrically coupled to the driving ground, the isolated driving circuit comprising:
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a control module configured to generate a first pulse width modulation signal and a second pulse width modulation signal according to the output signal; a transformer configured to receive the first pulse width modulation signal and the second pulse width modulation signal to generate a first control signal; a rectifying circuit configured to generate a second control signal according to the first control signal; and a driving auxiliary circuit configured to generate a driving control signal according to the second control signal, so as to drive the at least one power switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A power conversion device, comprising:
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a power converter configured to generate an output signal according to an input signal, the power converter comprising a driving ground, a reference ground and at least one power switch, wherein the output signal is electrically coupled to the reference ground, and the at least one power switch is electrically coupled to the driving ground; and an isolated driving circuit configured to generate a driving control signal according to the output signal, so as to drive the at least one power switch, wherein when the voltage level of the driving control signal is at a first voltage level, the at least one power switch is turned on, and when the voltage level of the driving control signal is at a second voltage level, the at least one power switch is turned off. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An isolated driving method for driving a power converter having a driving ground and a reference ground, wherein the power converter comprises at least one power switch electrically coupled to the driving ground, the isolated method comprising:
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generating a first control signal at a secondary side winding of a transformer by providing a first pulse width modulation signal and a second pulse width modulation signal to a primary side winding of the transformer, wherein the first pulse width modulation signal is complementary to the second pulse width modulation signal; generating a second control signal by transmitting the first control signal to a rectifying circuit; and generating a driving control signal by transmitting the second control signal to a driving auxiliary circuit, so as to control the at least one power switch, wherein when the voltage level of the driving control signal is at a first voltage level, the at least one power switch is turned on, and when the voltage level of the driving control signal is at a second voltage level, the at least one power switch is turned off. - View Dependent Claims (23)
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Specification