Voltage level shift with charge pump assist
First Claim
1. An apparatus, comprising:
- a first node to receive a signal that switches between first and second voltages;
a voltage level shifter to assert one of the second voltage and a third voltage at a second node based on a voltage at the first node, wherein the second voltage is greater than the first voltage, and wherein the third voltage is greater than the second voltage; and
a charge pump assist circuit to assert a same one of the second and third voltages at the second node as the voltage level shifter, based on the voltage at the first node.
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Accused Products
Abstract
A charge pump assist circuit to assist a voltage level shifter to toggle an output based on an input. The charge pump assist circuit may be implemented to toggle the output at a higher rate than the voltage level shifter. The voltage level shifter may be biased with an undivided voltage rail, such as an operating voltage of the charge pump assist circuit, rather than a divided voltage rail, while maintaining or increasing a toggle rate. The charge pump assist circuit may include a non-overlapping control generator to generate non-overlapping differential controls, and may further include first and second charge pump multipliers to increase voltages of the differential controls by a multiple of the operating voltage.
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Citations
19 Claims
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1. An apparatus, comprising:
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a first node to receive a signal that switches between first and second voltages; a voltage level shifter to assert one of the second voltage and a third voltage at a second node based on a voltage at the first node, wherein the second voltage is greater than the first voltage, and wherein the third voltage is greater than the second voltage; and a charge pump assist circuit to assert a same one of the second and third voltages at the second node as the voltage level shifter, based on the voltage at the first node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An apparatus, comprising:
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a processor; a communication system to communicate with a communication network; communication infrastructure to communicate amongst the processor, the communication system, and a user interface system; and voltage level shift circuitry that includes, a first node to receive a signal that switches between first and second voltages, a voltage level shifter to assert one of the second voltage and a third voltage at a second node based on a voltage at the first node, wherein the second voltage is greater than the first voltage, and wherein the third voltage is greater than the second voltage, and a charge pump assist circuit to assert a same one of the second and third voltages at the second node as the voltage level shifter, based on the voltage at the first node; wherein the voltage level shifter and the charge pump assist circuit are configured to voltage level shift data provided by one of the processor, the communication system, and the user interface system. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification