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雙極性晶體管

二極管

ESD保護(hù)、TVS、濾波和信號(hào)調(diào)節(jié)ESD保護(hù)

MOSFET

氮化鎵場(chǎng)效應(yīng)晶體管(GaN FET)

絕緣柵雙極晶體管(IGBTs)

模擬和邏輯IC

汽車(chē)應(yīng)用認(rèn)證產(chǎn)品(AEC-Q100/Q101)

Self-charging Remote Control

Look around any household or even office and you will find a multitude of remote controls. Classic examples include remote controls for the television, set-top-box and music / sound systems, but they can also include garage door openers, blinds, lights and air conditioning (HVAC) systems to name just a few. One thing they have in common is they are often powered by small batteries. As they don’t demand a lot of power, increasingly designers are moving to rechargeable solutions that can benefit from Nexperia's Energy Harvesting Power Managment ICs (PMICs) to ensure we never have to change the batteries in a remote control ever again.

Block diagram

設(shè)計(jì)考慮因素

  • 開(kāi)始采用PWM驅(qū)動(dòng)無(wú)刷直流電機(jī)控制
  • 電機(jī)驅(qū)動(dòng)MOSFET必須以低RDSon和良好的熱阻抗來(lái)滿足峰值高電流需求
  • 如果過(guò)載情況會(huì)降低電池和柵極電壓，則可能需要具有強(qiáng)線性模式性能的MOSFET來(lái)提供反向電池保護(hù)
  • MOSFET可能需要滿足UL2595等的具體間距要求
  • 為小尺寸優(yōu)化的電荷平衡MOSFET，通常裝在可移動(dòng)電池組中——每個(gè)電池一個(gè)

Adaptive energy harvesting PMIC enables environmentally friendly autonomous, connected devices

Ambient energy harvesting has often been proposed for recharging batteries in remote internet-of-things devices but hasn’t yet taken off. Nexperia's new dedicated PMIC is set to radically improve the viability of energy harvesting with significant benefits for the environment.