Patent ID: 11965933
Assignee: NUVOTON TECHNOLOGY CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H  Y | IPC G  H

Claim 0:
1. An integrated circuit, comprising:
terminals which are a pair, for measuring voltage or current of a battery and to which a filter unit including a capacitive element is connected;
an analog-to-digital (AD) converter that measures a waveform of voltage between the terminals during charging or discharging of the capacitive element;
a time constant calculation unit that calculates a time constant of the filter unit based on the waveform measured, and
a control unit that charges or discharges the capacitive element connected between the terminals,
wherein the terminals are connected to both ends of the battery via the filter unit, for measuring the voltage of the battery, and
the control unit charges the capacitive element after discharging the capacitive element by causing a short circuit between the terminals.