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07. 布点经验
( V: l- F% v9 m% D我是做开关电源的,所以就讲一下开关电源的一点经验:
9 Z" I+ x2 u) ~' [8 y- ^ @布点总的原则是:觉得那里发热严重,就布那里,还有一些关键元件等,
" ]; K3 K4 h1 q, K: Z! Q举例如下:8 E1 L6 d3 m4 M9 \' X. P
1.Transformer coil, `) w6 X: j1 z# Y4 b1 U
2.Transformer core, S. S0 t* j9 a( ?0 @; R
3.电源滤波的电解电容
0 S$ T5 g% \1 K2 _1 y4.X电容
5 p8 }* I: l1 }7 R8 x/ R. {, P' ~5.Y电容
5 U6 f( J2 P$ \' f6.Optocouple9 P* h, J7 c- f( E
7.pcb near 开关管+ P. n) ]' }& W
8.pcb under transformer! N1 G- _3 E W$ T0 W. S5 _
9.共模电感
1 e2 [' h* F6 h10.Input wire
% l" z2 H8 _0 Q7 Q5 `( ^11.Output cable# S+ x2 F7 R& q
12.Enclosure inside near transformer0 C. W$ ?; m7 i3 g$ m7 n5 J4 O) ]
13.Enclosure outside near transformer* @4 N! J$ c5 m$ N4 P8 @$ R
14.Enclosure inside between blades |
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