Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
50 words
A voltage regulator circuit having an error amp, an integrator circuit, a pass transistor, and a feedback circuit, wherein the integrator circuit further comprises: an amplifier having an input and an output; and a switched capacitor and a capacitor coupled in series across the input and output of the amplifier.
Claim 2
Dependent Claim
119 words
A voltage regulator circuit comprising an error amp having a noninverting input for receiving a reference voltage, an inverting input, and an output; an integrator circuit comprising: an amplifier with an input coupled to the output of the error amp and having an output, a switched capacitor and a capacitor coupled in series across the input and output of the amplifier; a pass transistor having a current path with a first end coupled to a voltage source and a second end, and having a control element coupled to the output of the integrator circuit; and a feedback circuit coupled between the second end of the conductive path of the pass transistor and the inverting input of the error amplifier.
Claim 3
Dependent Claim
28 words
The voltage regulator circuit of claim 1 or claim 2, wherein the switched capacitor is switched at a frequency proportional to a current demand on the voltage regulator.
Claim 4
Dependent Claim
35 words
The voltage regulator circuit of claim 1 or claim 2, further comprising a voltage controlled oscillator having an input coupled to the output of the amplifier and having an output coupled to the switched capacitor.
Claim 5
Dependent Claim
33 words
The voltage regulator claim 1 or claim 2, further comprising a current controlled oscillator having an input coupled to the output of the amplifier and having an output coupled to the switched capacitor.
Claim 6
Dependent Claim
87 words
The voltage regulator of claim 1 or claim 2, wherein the switched capacitor comprises: a first transistor having a drain, source, and a gate for receiving a frequency from a variable frequency source; a capacitor having a first end coupled to the drain of the first transistor and having a second end coupled to ground; and a second transistor having a drain coupled to the first end of the capacitor, having a source, and having a gate for receiving an inverted signal from the variable frequency source.
Claim 7
Dependent Claim
22 words
The voltage regulator circuit of claim 6, wherein the variable frequency source comprises a voltage controlled oscillator or a current controlled oscillator.
Claim 8
Dependent Claim
18 words
The voltage regulator circuit of claim 6, wherein the first transistor and the second transistor are MOSFET transistors.
Claim 9
Independent Claim
40 words
A method for stabilizing a regulating voltage with a load pole by generating a load pole cancelling zero comprising the steps of: generating a frequency inversely proportional to the load current; and driving a switched capacitor with the generated frequency.
Claim 10
Dependent Claim
19 words
The method of claim 9, wherein the step of generating a frequency is implemented using a voltage control oscillator.
Claim 11
Dependent Claim
19 words
The method of claim 9, wherein the step of generating a frequency is implemented using a current control oscillator.
Claim 12
Dependent Claim
124 words
A power supply which includes a voltage regulating circuit comprising: an error amp having a noninverting input for receiving a reference voltage, an inverting input, and an output, an integrator circuit comprising: an amplifier with an input coupled to the output of the error amp and having an output, a switched capacitor and a capacitor coupled in series across the input and output of the amplifier; a pass transistor having a current path with a first end coupled to a voltage source and a second end, and having a control element coupled to the output of the integrator circuit; and a feedback circuit coupled between the second end of the conductive path of the pass transistor and the inverting input of the error amplifier.