AN INTEGRATED CIRCUIT AND METHOD FOR CONTROLLING VARIATION IN THE VOLTAGE OUTPUT FROM ON-CHIP VOLTAGE GENERATION CIRCUITRY

• Main Authors: HOWARD DAVID WILLIAM, SAVANTH PARAMESHWARAPPA ANAND KUMAR, FLYNN DAVID WALTER, SANDHU BAL S, MYERS JAMES EDWARD
• Format: Patent
• Language: English; Korean
• Published: 10.02.2014
• Subjects: CONTROLLING; PHYSICS; REGULATING; SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES

Provided are an integrated circuit for controlling the variation in the voltage output from an on-chip voltage generation circuit and a method thereof. The integrated circuit includes a voltage generation circuit which is operated by a supplied input voltage and generates an on-chip supply voltage, which is different from the supplied input voltage, to an output node. A circuit block receives the on-chip supply voltage generated by the voltage generation circuit and provides a variable load to the output node during the operation of the circuit block. Also, an oscillating circuit is connected to the output node in order to provide an additional load to the output node and generates an oscillating signal of which the frequency varies as the on-chip supply voltage changes. A control circuit controls the additional load applied to the output node by the oscillating circuit in response to the status of a trigger. By providing a simple and efficient mechanism where an additional load, which is variable to offset the variation in the load applied to the output node by the circuit block, is applied to the output node, the present invention is able to control the variation in the voltage output from the on-chip voltage generation circuit. [Reference numerals] (10) On-chip voltage generation circuit, ex) charge pump; (15) Oscillating circuit 2; (30, 60) Level up; (35) Control circuit; (45) Oscillating circuit 1