Fairchild公司的FSEZ1016A是集成了功率MOSFET的初級側調(diào)整(PSR)PWM,能簡化需要CV和CC調(diào)整功能的電源設計,不需要次級反饋電路,綠色模式在輕薄負載時頻率下降.固定的PWM頻率43kHz,以降低EMI.此外還有帶自動重起的超溫保護(OTP)和過壓保護(OVP),以及欠壓鎖住(UVLO),主要用在手機,無繩電話,PDA,數(shù)碼相機和電動工具的充電器,替代線性變壓器和RCCSMPS,離線高亮LED驅動器.本文介紹FSEZ1016A主要特性,PSR反激轉換器電路圖以及典型應用電路
Fairchild 公司的FSEZ
1016A 是集成了
功率MOSFET的初級側調(diào)整(
PSR)PWM,能簡化需要CV和CC調(diào)整功能的
電源設計,不需要次級反饋電路,綠色模式在輕薄負載時頻率下降.固定的PWM頻率43kHz,以降低
EMI.此外還有帶自動重起的超溫保護(OTP)和過壓保護(OVP),以及欠壓鎖住(UVLO),主要用在
手機,無繩電話,PDA,數(shù)碼相機和
電動工具的充電器,替代線性
變壓器和
RCCSMPS,離線高亮
LED驅動器.本文介紹FSEZ1016A主要特性, PSR反激轉換器電路圖以及典型應用電路圖和材料清單(BOM),5V/1A電源板布局圖.
FSEZ1016A (EZSWITCH™) Primary-Side-Regulation PWM Integrated Power MOSFET The primary-side PWM integrated power MOSFET (EZSWITCH™), FSEZ1016A, signifi
cantly simplifies power supply designs that require CV and CC regulation capabilities. FSEZ1016A controls the output voltage and current precisely with only the information in the primary side of the power supply, not only removing the output current sensing loss, but al
soeliminating all secondary feedback circuitry.
The green-mode function with a low startup current (10&
mu;A) maximizes the light-load efficiency so the power supply can meet stringent standby power regulations.
Compared with conventional secondary-side regulation approach; the FSEZ1016A can reduce total cost, component count, size, and weight; while simultaneously increasing efficiency, productivity, and system reliability.
FSEZ1016A is available in a 7-
pinSOIC package.
