Renesas ISL9241数字配置降压－升压充电方案

Renesas公司的ISL9241是数字可配置的降压-升压充电器,支持窄电压直接充电(NVDC)和混合电源降压升压(HPBB/Bypass)充电,采用固件控制在两个模式转换.并且提供充电功能,系统总线管制和保护特性,输入电压范围3.9V-23.4V,系统/电池输出电压3.9V到18.304,主要用在2-4节电池平板电脑,笔记本电脑,充电宝,以及USB-C接口的手持设备.本文介绍了ISL9241主要特性,框图和功能框图,应用框图以及评估板ISL9241EVAL1Z主要指标,框图,电路图,材料清单和PCB设计图.
Buck-Boost Configurable Battery Charger with SMBus Interface and USB Power Delivery The ISL9241 is a digitally configurable buck-boostbattery charger that can support both Narrow VoltageDirect Charging (NVDC) and Hybrid Power Buck Boost(HPBB/Bypass) charging and switch between the modesusing firmware control. Bypass mode is also supportedusing a controller’s firmware, allowing the adapter toprovide power directly to the system. The ISL9241provides the charging function, system bus regulation,and protection features using only NFETs for tablet,ultrabook, and notebook platforms. The advancedRenesas R3™ technology provides a high, light-loadefficient Charging mode. The ISL9241 takes input powerfrom a wide range of DC power sources (conventional AC/DC charger adapters, USB Type-C Power ports, traveladapters, etc.) and safely charges battery packs with up to4-series cell Li-ion batteries.
The system power can be provided from the adapter,battery, or a combination of both. The charger’sreconfigurable internal registers allow the use of asmaller inductor for the HPBB mode to achieve higherefficiencies across multiple power levels. The ISL9241can operate with only a battery, only an adapter, or bothconnected. For Intel IMVP compliant systems, theISL9241 includes System Power monitor (PSYS)functionality, which provides an analog signalrepresenting total platform power. The PSYS outputconnects to a wide range of IMVP core regulators toprovide an IMVP compliant power domain function. TheISL9241 supports reverse buck, boost, or buck-boostoperation to the ad...