| CPC H02M 3/33576 (2013.01) [H02M 1/0006 (2021.05); H02M 1/088 (2013.01); H02M 3/33507 (2013.01); H02M 3/33561 (2013.01); H02M 3/33573 (2021.05)] | 6 Claims |
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6. A power supply having ORing MOSFETs, comprising:
a rectifying unit, rectifying an alternating current (AC) to a direct current (DC), and outputting the DC;
a power converter, comprising:
a primary side module electrically connected to the rectifying unit for receiving the DC;
a main power module coupled with the primary side module to induce a main voltage; wherein the main power module comprises a main output terminal and a main ground terminal; and
an auxiliary power module coupled with the primary side module to induce an auxiliary voltage, wherein the auxiliary power module includes an auxiliary output terminal and an auxiliary ground terminal, and the auxiliary ground terminal is electrically connected to the main ground terminal;
an ORing MOSFET unit comprising a unit source, a unit gate and a unit drain, wherein the unit source is electrically connected to the main output terminal of the main power module;
a driving unit, comprising a first driving input terminal, a second driving input terminal, a driving output terminal and a voltage control terminal, wherein the first driving input terminal is electrically connected to the unit source, and the second driving input terminal is electrically connected to the unit drain of the ORing MOSFET unit, wherein the driving output terminal is electrically connected to the unit gate of the ORing MOSFET unit; and
a voltage regulating unit comprising a reference voltage input terminal, a regulating input terminal and a regulating output terminal, wherein the reference voltage input terminal is electrically connected to the main output terminal of the main power module, and the regulating input terminal is electrically connected to the auxiliary output terminal of the auxiliary power module, wherein the regulating output terminal is electrically connected to the voltage control terminal of the driving unit;
wherein the voltage regulating unit is configured to generate a control voltage according to the main voltage and the auxiliary voltage and is configured to output the control voltage through the regulating output terminal, such that a voltage difference between a gate voltage and a source voltage is regulated to be less than a rated voltage threshold that is generated by the driving unit; and
wherein the voltage regulating unit is a forward converter and further comprises:
a second coupler, comprising a third coil and a fourth coil coupled to each other; wherein the third coil includes a fifth terminal and a sixth terminal; wherein the fourth coil includes a seventh terminal and an eighth terminal;
a fifth capacitor, comprising a fifth positive terminal and a fifth negative terminal; wherein the fifth positive terminal is electrically connected to the auxiliary output terminal of the auxiliary power module and the fifth terminal of the third coil, and the fifth negative terminal is electrically connected to the auxiliary ground terminal of the auxiliary power module;
a forward MOSFET, comprising an eighth source, an eighth gate, and an eighth drain; wherein the eighth drain is electrically connected to the sixth terminal of the third coil, and the eighth source is electrically connected to the fifth negative terminal of the fifth capacitor;
a sixth capacitor, comprising a sixth positive terminal and a sixth negative terminal; wherein the sixth positive terminal is electrically connected to the voltage control terminal of the driving unit and the seventh terminal of the fourth coil, and the sixth negative terminal is electrically connected to the main output terminal of the main power module; and
a forward diode, comprising a fourth anode and a fourth cathode; wherein the fourth anode is electrically connected to the eighth terminal of the fourth coil, and the fourth cathode is electrically connected to the sixth negative terminal of the sixth capacitor.
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