Pre-charging filters to reduce settling time

摘要

Various arrangements for determining a voltage of a voltage source using pre-charging are presented. Such arrangements may include a measurement module which includes an analog to digital converter, a driver, and an interface. The interface may be electrically coupled with the analog to digital converter and the driver. The driver may be configured to output current to charge a capacitor. After a first predefined period of time, the driver may stop outputting current to pre-charge the capacitor. After the driver has stopped pre-charging the capacitor and a second predefined period of time has elapsed, the analog to digital converter may be configured to measure a voltage of the capacitor. Such arrangements may include a capacitor, wherein the capacitor is electrically coupled with the interface of the measurement module.

主权项

1. A system for determining a voltage of a voltage source, the system comprising:
a measurement module comprising:
an analog to digital converter,a driver, andan interface,wherein:
the interface is electrically coupled with the analog to digital converter and the driver,the driver is configured to output current to charge a capacitor,after a first predefined period of time, the driver stops outputting current to pre-charge the capacitor, andafter the driver has stopped pre-charging the capacitor and a second predefined period of time has elapsed, the analog to digital converter is configured to measure a voltage of the capacitor; the capacitor, wherein the capacitor is electrically coupled with the interface of the measurement module; and a switching module configured to electrically couple the interface of the measurement module and the capacitor with the voltage source at least while the driver is charging the capacitor and the analog to digital converter is measuring the voltage of the capacitor.