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电池充电器的PWM输入看门狗保护
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时间:2020-03-06
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摘要:添加看门狗保护的充电器的输入电路免受损害了手机卫士,当基带处理档或停止软件的执行。Maxim > App Notes > BATTERY MANAGEMENT MICROPROCESSOR SUPERVISOR CIRCUITS Keywords: mobile phones, battery charging, microprocessor supervisors, pulse-width modulation, watchdog Sep 16, 2005 protection APPLICATION NOTE 3623 Battery-Charger PWM Input Has Watchdog Protection Abstract: Adding watchdog protection to the charger-input circuitry of a mobile phone guards against damage when the baseband processor stalls or ceases software execution. Mobile-phone batteries are usually charged through a proprietary charging algorithm in the baseband controller. The phone's charger input is connected to the internal battery through a p-channel switch of low on-resistance, controlled by a pulse-width modulation (PWM) signal from the baseband controller (Figure 1). To minimize power dissi……
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