基于TOP265EG设计的30W待机电源方案

文章摘要：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 mee

基于TOP265EG设计的30W待机电源方案,标签：电源电路,电路设计,http://www.88dzw.com


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 吋).

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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