36V, 3.1A Monolithic Buck Converter with CC/CV Control
1 Features
3.1A continuous output current capability
6.5V to 36V wide operating input range with input
Over Voltage Protection
Integrated 36V, 76mΩ high side and 36V, 52mΩ low
side power MOSFET switches
Up to 95% efficiency
CV/CC Mode control (Constant voltage and
constant current). Cycle-by-Cycle Current Limiting
Configurable Line Drop Compensation with resistor
Configurable Charging Current Limit with resistor
Internal Soft-Start limits the inrush current at turn-on
Internal compensation to save external components
Stable with Low ESR Ceramic Output Capacitors
Fixed 100KHz Switching Frequency
Input Under-Voltage Lockout. Output Over-Voltage
Protection
Over-Temperature Protection
Soft start time is programmable using external
capacitor
33V input voltage protection to protect power
MOSFETs from working at high current ,high input
voltage condition
Pulse skip mode at light load to improve light load
efficiency
Thermally Enhanced ESOP-8 Package
2 Applications
Car charger
Portable charging device
General purpose USB charger
General purpose DC-DC conversion
3 Description
PL8322 integrates a high efficiency synchronous
step-down switching regulator, which includes a 36V,
76mΩ high side and a 36V, 52mΩ low side
MOSFETs to provide 3.1A continuous load current
over 6.5V to 36V wide operating input voltage with
33V input over voltage protection. Peak current mode
control provides fast transient responses and
cycle-by-cycle current limiting. PL8322 has
configurable line drop compensation, configurable
charging current limit. CC/CV mode control provides
a smooth transition between constant current
charging and constant voltage charging stages.
Built-in soft-start prevents inrush current at power-up
36 v, 3.1单片与CC / CV控制Buck变换器
1功能
3.1 A 连续 输出 电流 能力
宽 6.5 V 36 V 操作 输入 范围
过电压保护
Integrated 36 V, 76 mΩ 高压 侧 和 36 V, 52 mΩ 低
侧功率MOSFET开关
Up 效率 95%
CV/CC Mode (Constant 电压 和 控制
恒流)。逐周期限流
Configurable Line Drop Compensation 电阻器
Configurable Charging Current Limit 电阻器
Internal Soft-Start 限制 了 侵入 电流 刺激
Internal 补偿 保存 外部 组件
Stable 与 Low ESR Ceramic Output Capacitors
Fixed 100 KHz Switching Frequency
Input Under-Voltage Lockout.输出过压
保护
Over-Temperature Protection
Soft 开始 时间 是 使用 外部 可 编程
电容器
33 V 输入 电压 保护 保护 力量
场效应管工作在大电流、高输入
电压条件下
Pulse 跳过 模式 在 轻 负荷 提高 闲逛
