LEVEL SHIFT CIRCUIT AND SWITCHING POWER SOURCE APPARATUS
First Claim
1. A level shift circuit comprising:
- a first resistor having a first end being connected to a level shift power source;
a first n-type MOSFET having a drain connected to a second end of the first resistor and a source connected to the ground;
a second resistor having a first end connected to the level shift power source, the first and second resistors having the same resistance value;
a second n-type MOSFET having a drain connected to a second end of the second resistor and a source connected to the ground;
a pulse generator configured to control ON/OFF of the first and second n-type MOSFETs according to an input signal;
a control part configured to generate a set signal as the first n-type MOSFET is ON, a reset signal as the second n-type MOSFET is ON, and no signal as there is no voltage difference between a voltage at the drain of the first n-type MOSFET and a voltage at the drain of the second n-type MOSFET; and
a flip-flop configured to provide an output signal according to the set and reset signals generated by the control part, the output signal being a level-shifted signal of the input signal.
1 Assignment
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Accused Products
Abstract
A level shift circuit includes a first resistor connected to a level shift power source, a first transistor having a drain connected to a second end of the first resistor and a source to the ground, a second resistor connected to the level shift power source, a second transistor having a drain connected to a second end of the second resistor and a source to the ground, a pulse generator controlling ON/OFF of the first and second transistors according to an input signal, a control part generating a set signal if the first transistor is ON, a reset signal if the second transistor is ON, and no signal if there is no voltage difference between a voltage at the drain of the first transistor and a voltage at the drain of the second transistor, and a flip-flop providing an output signal according to the set and reset signals.
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Citations
8 Claims
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1. A level shift circuit comprising:
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a first resistor having a first end being connected to a level shift power source; a first n-type MOSFET having a drain connected to a second end of the first resistor and a source connected to the ground; a second resistor having a first end connected to the level shift power source, the first and second resistors having the same resistance value; a second n-type MOSFET having a drain connected to a second end of the second resistor and a source connected to the ground; a pulse generator configured to control ON/OFF of the first and second n-type MOSFETs according to an input signal; a control part configured to generate a set signal as the first n-type MOSFET is ON, a reset signal as the second n-type MOSFET is ON, and no signal as there is no voltage difference between a voltage at the drain of the first n-type MOSFET and a voltage at the drain of the second n-type MOSFET; and a flip-flop configured to provide an output signal according to the set and reset signals generated by the control part, the output signal being a level-shifted signal of the input signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification