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| ADP5090 超低功耗升壓穩(wěn)壓器解決方案 |
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| 文章來源： 更新時間：2014/11/10 10:19:00 |
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ADI公司的ADP5090是超低功耗升壓穩(wěn)壓器,可以轉(zhuǎn)換光伏電池板或TEG的DC電源,對鋰電池,薄膜電池,超級電容和傳統(tǒng)電容以及所有小型電器和無電池系統(tǒng)進(jìn)行到底充電.能對16uW到200mW收獲電源進(jìn)行有效的轉(zhuǎn)換,而工作損耗小于1uW.輸入電壓80 mV 到3.3 V,主要用于光伏電池能量收集,TEG能量收集, 電池穩(wěn)壓器,.自供電的無線傳感器設(shè)備,帶能量收集的手持和穿戴設(shè)備.本文介紹了ADP5090主要特性,框圖,多種應(yīng)用電路以及ADP5059超低功耗升壓穩(wěn)壓器評估板主要特性,電路圖,材料清單和PCB設(shè)計圖.
The ADP5090 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, super capacitors, 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 16 μW to 200 mW range with sub-μW operation losses. With the internal cold-start circuit, the regulator can start operating at an input voltage as low as 380 mV. After cold startup, the regulator is functional at an input voltage range of 80 mV to 3.3 V. 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. The charging control function of ADP5090 protects rechargeable energy storage, which is achieved by monitoring the battery voltage with programmable charging termination voltage and shutdown discharging voltage. In addition, a programmable PGOOD flag monitors the SYS voltage. An optional primary cell battery can be connected and managed by an integrated power path management control block that automatically switches the power source from the energy harvester, rechargeable battery, and primary cell battery. The ADP5090 is available in a 16-lead, 3 mm × 3 mm LFCSP package and is rated for a −40℃ to +125℃ junction temperature range.
ADP5090主要特性:
Boost regulator with maximum power point tracking (MPPT)
Hysteretic controller for best ultralight load efficiency
320 nA ultralow quiescent current (CBP ≥ MINOP)
260 nA ultralow quiescent current (CBP < MINOP)
Input voltage operation range from 80 mV to 3.3 V
Cold start from 380 mV (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 MINOP pin
Energy storage management
Programmable voltage monitor (2.2 V to 5.2 V) to support charging and prevent overcharging or overdischarging
Power path management for an optional backup primary cell battery connected to the BACK_UP pin
RF transmission friendly
Temporary shutdown boost regulator via microcontroller (MCU) communication
ADP5090應(yīng)用:
PV cell energy harvesting
TEG energy harvesting
Battery regulator powered by solar panel Industrial monitoring
Self powered wireless sensor devices
Portable and wearable devices with energy harvesting
圖1. ADP5090框圖
圖2. ADP5090典型應(yīng)用框圖
圖3. ADP5090應(yīng)用電路(1)
圖4. ADP5090應(yīng)用電路(2)
圖5. ADP5090應(yīng)用電路(3)
圖6. ADP5090應(yīng)用電路(4)
ADP5059超低功耗升壓穩(wěn)壓器評估板
The ADP5090 is an ultralow, power synchronous, dc-to-dc boost regulator in a compact 3 mm × 3 mm LFCSP_WQ package. The ADP5090 runs from input voltages of 0.38 V to 3.3 V and requires minimal external components to provide a high efficiency solution with an integrated power switch, a synchronous rectifier, and battery management. The EVAL-ADP5090 evaluation board provides an easy way to evaluate the device. This user guide describes how to quickly set up the board and deliver up to 3.5 V maximum voltage to the SYS output using an external resistor divide. The internal switches turn on if the storage element voltage at the BAT pin is above the externally programmed SETSD voltage of 2.4 V. The PGOOD indicator toggles high when the SYS pin ramps up to 3 V. Complete information about the ADP5090 is available in the corresponding data sheet. Consult the data sheet in conjunction with this user guide when using the evaluation board.
圖7. ADP5059超低功耗升壓穩(wěn)壓器評估板外形圖
圖8. ADP5059超低功耗升壓穩(wěn)壓器評估板電路圖
ADP5059超低功耗升壓穩(wěn)壓器評估板材料清單:
圖9. ADP5059超低功耗升壓穩(wěn)壓器評估板PCB設(shè)計圖(上)
圖10. ADP5059超低功耗升壓穩(wěn)壓器評估板PCB設(shè)計圖(下) |
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