基于TOP265EG设计的30W待机电源方案
图2.TOPSwitch-JX系列通用输入高效19V 65W反激电源电路图
采用TOPSwitch-JX系列TOP265EG的12V 30W高效待机电源设计案例
12V 30W设计案例主要特性:
Highly energy efficient
Full load efficiency >90%
Efficiency >87% above 10% load
Average efficiency >90% (25%, 50%, 75%, 100% load points)
No-load input power 100 mW
Simplifies meeting ENERGY STAR 2.0, 80 Plus and EuP requirements
725 V MOSFET rating allowed high turns ratio (VOR) and use of 60 V Schottky output diode
Low cost, low component count and small PCB footprint solution
Performance met without synchronous output rectification
132 kHz operation optimized core size and efficiency performance
Low-profile eSIP package
Integrated Protection and Reliability Features
Line under-voltage lock out (UVLO)
Primary sensed latching output overvoltage shutdown (OVP) with fast AC reset
Auto recovery output over current (OCP)
Meets limited power source (LPS) 100 VA requirement with a single point of failure
Accurate thermal shutdown with large hysteresis
图3.设计案例PCB外形图(2.97 x 2.14 ).
设计电源指标:
图4. 12V 30W设计案例电路图
设计案例材料清单:
图5. 12V 30W设计案例变压器电框图
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