Patent ID: 8665009
Filing Date: 2014-03-04
Classification: H02M

Abstract:
1. An integrated circuit comprising: voltage generation circuitry configured to operate from a supplied input voltage and to generate at an output node an on-chip voltage supply different to said supplied input voltage; a circuit block configured to receive the on-chip voltage supply generated by the voltage generation circuitry, during operation of the circuit block, the circuit block presenting a varying load on said output node; oscillation circuitry coupled to said output node to provide an additional load on said output node and configured to produce an oscillation signal whose frequency varies as the value of the on-chip voltage supply varies; and control circuitry configured to be responsive to a trigger condition to adjust the additional load provided on the output node by said oscillation circuitry, wherein: said control circuitry further comprises monitoring circuitry configured to monitor said oscillation signal in order to monitor variation in a value of the on-chip voltage supply generated by the voltage generation circuitry; said monitoring circuitry is configured to be responsive to at least one predetermined variation in said oscillation signal to indicate said trigger condition, and the control circuitry being responsive to said trigger condition to cause the power consumption of said oscillation circuitry to be varied in order to vary the amount of said additional load on said output node.