INTEGRATED CIRCUIT POWER MANAGEMENT MODULE

摘要

An integrated circuit includes a set of electronic circuits, a voltage regulator, and a power management module. The power management module includes a set of dummy circuits connected to the set of electronic circuits, a control signal generator, a counter and a shift register. The control signal generator generates a control signal based on the current consumption of the set of electronic circuits dropping below a threshold value over a predefined period of time. The counter generates a count signal for a predetermined time period when the control signal is activated. The shift register receives the count signal, enables the dummy circuits when the count signal is received, and disables the dummy circuits in a daisy chain fashion during the predetermined time period.

主权项

1. An integrated circuit, comprising:
a set of electronic circuits; a voltage regulator, connected to the set of electronic circuits, for providing a core supply voltage to the set of electronic circuits; and a power management module, connected to the set of electronic circuits and the voltage regulator, wherein the power management module includes: a set of dummy circuits connected to the set of electronic circuits; a control signal generator that generates a control signal based on the current consumption of the set of electronic circuits dropping below a threshold value over a first predetermined time period; a counter, connected to the control signal generator, that generates a count signal for a second predetermined time period when the control signal is activated; and a shift register, connected to the counter and the set of dummy circuits, that receives the count signal, enables the set of dummy circuits substantially simultaneously when the count signal is received, and disables the set of dummy circuits in a daisy chain fashion during the second predetermined time period, wherein enabling and then disabling the dummy circuits prevents a sharp change in current consumption, which prevents a high voltage detection signal from being generated and a corresponding reset occurring.