FAST RESPONSE PULSE WIDTH MODULATION CONTROL FOR SWITCHING REGULATOR
First Claim
1. A switching rectifier circuit comprising:
- a voltage input coupled to a positive amplification device and a negative amplification device, the positive amplification device and the negative amplification device coupled in series;
a voltage output node on a common output of the positive amplification device and the negative amplification device;
a pulse width modulation controller coupled to the positive amplification device and the negative amplification device, the pulse width modulation controller including a set input and a reset input;
a voltage switching circuit having a voltage switching circuit output and a clock signal input;
a pulse width modulation comparator coupled between the voltage switching circuit output and the pulse width modulation controller;
an error amplifier having an error amplifier output coupled to the pulse width modulation comparator;
a voltage reference having an output coupled to the error amplifier;
a high threshold voltage comparator including;
a high threshold voltage reference;
a first high threshold voltage comparator input coupled to the high threshold voltage reference;
a second high threshold voltage comparator input coupled to the output voltage; and
a high threshold voltage comparator output coupled to the pulse width modulation controller reset input;
a low threshold voltage comparator including;
a low threshold voltage reference;
a first low threshold voltage comparator input coupled to the low threshold voltage reference;
a second low threshold voltage comparator input coupled to the output voltage; and
a low threshold voltage comparator output coupled to the pulse width modulation controller set input.
2 Assignments
0 Petitions
Accused Products
Abstract
A switching rectifier circuit includes a pulse width modulation controller, a voltage switching circuit, a pulse width modulation comparator, an error amplifier, a voltage reference, a high threshold voltage comparator and a low threshold voltage comparator. A varying output voltage of the voltage regulator is sampled and compared to a high threshold voltage reference and a low threshold voltage reference. When the sampled output voltage is equal to or greater than the high threshold voltage reference the output voltage is decreased. When the sampled output voltage is equal to or less than the low threshold voltage reference the output voltage is increased.
12 Citations
20 Claims
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1. A switching rectifier circuit comprising:
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a voltage input coupled to a positive amplification device and a negative amplification device, the positive amplification device and the negative amplification device coupled in series; a voltage output node on a common output of the positive amplification device and the negative amplification device; a pulse width modulation controller coupled to the positive amplification device and the negative amplification device, the pulse width modulation controller including a set input and a reset input; a voltage switching circuit having a voltage switching circuit output and a clock signal input; a pulse width modulation comparator coupled between the voltage switching circuit output and the pulse width modulation controller; an error amplifier having an error amplifier output coupled to the pulse width modulation comparator; a voltage reference having an output coupled to the error amplifier; a high threshold voltage comparator including; a high threshold voltage reference; a first high threshold voltage comparator input coupled to the high threshold voltage reference; a second high threshold voltage comparator input coupled to the output voltage; and a high threshold voltage comparator output coupled to the pulse width modulation controller reset input; a low threshold voltage comparator including; a low threshold voltage reference; a first low threshold voltage comparator input coupled to the low threshold voltage reference; a second low threshold voltage comparator input coupled to the output voltage; and a low threshold voltage comparator output coupled to the pulse width modulation controller set input. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of regulating a voltage comprising:
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sampling a varying output voltage of the voltage regulator; comparing the sampled output voltage to a high threshold voltage reference; decreasing the output voltage of the voltage regulator when the sampled output voltage is equal to or greater than the high threshold voltage reference; and increasing the output voltage of the voltage regulator when the sampled output voltage is equal to or less than the low threshold voltage reference. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of regulating a voltage comprising:
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sampling a varying output voltage of a voltage regulator; comparing the sampled output voltage to a high threshold voltage reference; decreasing the output voltage of the voltage regulator and decreasing a duty cycle of the voltage regulator when the sampled output voltage is equal to or greater than the high threshold voltage reference; increasing the output voltage of the voltage regulator and increasing the duty cycle of the voltage regulator when the sampled output voltage is equal to or less than the low threshold voltage reference.
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Specification