Analog Devices Inc. ADP5090 Ultralow Power Boost Regulator
Analog Devices' ADP5090 Ultralow Power Boost Regulator is an integrated boost regulator that converts DC power from PV cells or TEGs. The device charges storage elements such as rechargeable Li-Ion batteries, thin-film batteries, supercapacitors, and conventional capacitors, and powers up small electronic devices and battery-free systems. 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 8 0 mV to 3.3V.
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.
Features
- 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)
Applications
- 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 Eval Board for ADP5090 Regulator
Evaluation board that provides an easy way to evaluate the ADP5090 device.