公开(公告)号：US20200313444A1

公开(公告)日：2020-10-01

申请号：US16370151

申请日：2019-03-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Mustapha EL MARKHI ,  Rohit BHAN ,  Thomas VERMEER ,  Daniel MAVENCAMP

IPC: H02J7/00 ,  H03M1/00 ,  G01R19/165

Abstract: Aspects of the present disclosure provide for circuit. In at least some examples, the circuit includes a controller, a current source, a switch, and a digital-to-analog converter (DAC). The controller includes an analog-to-digital converter (ADC) having an input and an output, a first register, and a second register coupled to the output of the ADC. The switch is coupled between an output of the current source and a first node and has a control terminal coupled to the controller. The first node is coupled to the input of the ADC and is configured to couple to a resistor. The DAC has an input coupled to the controller and an output configured to couple to a battery.