Analog Devices Inc. ADP5090 超低功耗升压调节器
亚德诺半导体ADP5090 超低功率升压调节器是一款集成式升压调节器，可转换 PV 电池或 TEGi 的直流电。该器件可给储存元件充电，如可再充电锂电池、薄膜电池、超级电容器及常规电容器，并能给小型电子设备和无电池系统上电。 ADP5090 可高效转换 16μW 到 200mW 的有限收集功率，操作时损失的功率不到1μW 。凭借内置冷启动电路，该调节器在输入电压低至 380mV 时也可以开始运行。冷启动之后，该调节器可在 8 0 mV 到 3.3V 的输入电压范围内正常运作。
The ADP5090 provides efficient conversion of the harvested limited power from a 16μW to 200mW range with sub-μW operation losses. With the internal cold-start circuit, the regulator can start operating at an input voltage as low as 380mV. After cold start-up, the regulator is functional at an input voltage range of 80mV to 3.3V.
By sensing the input voltage at the VIN pin, the control loop keeps the input voltage ripple in a fixed range to maintain stable DC-to-DC boost conversion. The VIN OCV sensing and programmable regulation points of the input voltage allow extraction of the highest possible energy from the PV cell or TEG harvester. A programmable minimum operation threshold (MINOP) enables boost shutdown during a low light condition. In addition, the DIS_SW pin can temporarily shut down the boost regulator and is RF transmission friendly.
特性
- Boost regulator with maximum power point tracking
- Hysteretic controller for best ultralight load efficiency
- 320nA ultralow quiescent current
- 260nA ultralow quiescent current
- Input voltage operation range from 80mV to 3.3V
- Cold start from 380mV (typical) with charge pump
- Open circuit voltage (OCV) sensing for MPPT
- Programmable MPPT ratio for photovoltaic (PV) or thermoelectric generator (TEG) energy sources
- Programmable shutdown point on MIN OP pin
- Energy storage management
- Programmable voltage monitor (2.2V to 5.2V) to support charging and prevent overcharging over overdischarging
- Power path management for an optional backup primary cell battery connected to the BACK_UP pin
- RF transmission friendly temporary shut down boost regulator via a microcontroller (MCU communication)
应用
- PV cell energy harvesting
- TEF energy harvesting
- Battery regulator powered by solar panel
- Industrial monitoring
- Self-powered wireless sensor devices
- Portable and wearable devices with energy harvesting
Application Circuit Diagram
