- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：直流/直流开关稳压器 - 降压/升压和反相稳压器
- 功能描述：用于可调节 PWM 频率的可编程最大功率点跟踪控制器
- 点击这里打开及下载SM72445的技术文档资料
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The SM72445 is a programmable MPPT controller capable of controlling four PWM gate drive signals for a 4-switch buckboost converter. The SM72445 also features a proprietary algorithm called Panel Mode (PM) which allows for the panel to be connected directly to the output of the power optimizer circuit when the input to output voltage ratio is close to 1. This provides an opportunity to optimize the efficiency of the power optimizer when the load is naturally matching the maximum power point of the panel. Along with the SM72295 (Photovoltaic Full Bridge Driver), it creates a solution for an MPPT configured DC-DC converter with efficiencies up to 99.5% (when operating with dedicated PM switches). Integrated into the chip is an 8-channel, 10 bit A/D converter used to sense input and output voltages and currents, as well as IC configuration. Externally programmable values include maximum output voltage and current as well as different settings for slew rate, soft-start and Panel Mode.
- Renewable Energy Grade
- 110kHz,135kHz or 215kHz PWM operating frequency
- Panel Mode pin for optional bypass switch control
- Programmable maximum power point tracking
- Photovoltaic solar panel voltage and current diagnostic
- Single inductor four switch buck-boost converter control
- I2C interface for communication
- Output overvoltage protection
- Over-current protection
- Package
- TSSOP-28
- Topology
- Buck-Boost
- Vin (Min) (V)
- 4.75
- Vin (Max) (V)
- 5.25
- Switching frequency (Min) (kHz)
- 215
- Switching frequency (Max) (kHz)
- 215
- Iq (Typ) (mA)
- 11.5
- Features
- —
- Rating
- Catalog
SM72445的完整型号有：SM72445MT/NOPB、SM72445MTE/NOPB、SM72445MTX/NOPB，以下是这些产品的关键参数及官网采购报价：
SM72445MT/NOPB，工作温度：-40 to 125，封装：TSSOP (PW)-28，包装数量MPQ：48个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：SN，TI官网SM72445MT/NOPB的批量USD价格：5.398（1000+）
SM72445MTE/NOPB，工作温度：-40 to 125，封装：TSSOP (PW)-28，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：SN，TI官网SM72445MTE/NOPB的批量USD价格：5.398（1000+）
SM72445MTX/NOPB，工作温度：-40 to 125，封装：TSSOP (PW)-28，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：SN，TI官网SM72445MTX/NOPB的批量USD价格：4.498（1000+）
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