Analog Devices Inc. Regulador de impulso de potencia ultrabaja ADP5090
El regulador de impulso de potencia ultrabaja ADP5090 de Analog Devices es un regulador de impulso integrado que convierte la potencia CC de células fotovoltaicas o TEG. El dispositivo carga elementos de almacenamiento como baterías de iones de litio recargables, baterías de película fina, condensadores súper y convencionales, y alimenta dispositivos electrónicos de pequeño tamaño y sistemas sin batería. El ADP5090 ofrece una conversión eficiente de la energía limitada recogida de un rango de 16 μW a 200 mW con pérdidas de funcionamiento inferiores a μW. Con el circuito interno de arranque en frío, el regulador puede comenzar a funcionar con una tensión de entrada de tan solo 380 mV. Tras el arranque en frío, el regulador estará operativo a un rango de tensión de entrada de 8 0 mV a 3,3 V.
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.
Características
- 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)
Aplicaciones
- 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. Placa de evaluación EVAL-ADP5090 de Analog Devices
La placa de evaluación EVAL-ADP5090 de Analog Devices proporciona una forma fácil de evaluar el dispositivo ADP5090.