Analog Devices Inc. ADP5090超低消費電力の昇圧レギュレータ
Analog Devices ADP5090 超低消費電力昇圧レギュレータは、PVセルまたはTEGのDC電力を変換する統合昇圧レギュレータです。このデバイスは充電式のリチウム・イオン電池、薄膜電池、スーパー・コンデンサ、従来のコンデンサなどのストレージ・エレメントを充電し、小型電子機器やバッテリーなしのシステムなどに電源を提供します。ADP5090は、サブμWの動作損失で、16μW～200mWの範囲で発電されたわずかな電力を効率的に変換します。このレギュレータには内部コールドスタート回路が搭載されているため、380mVという低い入力電圧で動作を開始できます。コールドスタート後、レギュレータは8 0 mV～3.3Vの入力電圧範囲で機能します。
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.
特徴
- 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)
アプリケーション
- 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
Evaluation Board
Analog Devices Inc. EVAL-ADP5090評価ボード
評価ボードを使用すると、ADP5090デバイスを簡単に評価できます。