FET400

Ongoing

STD FET400

Audio

License: Public Domain

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2.2k
8
0
1

Update time： 2022-11-12 09:46:06

Creation time： 2019-09-07 15:42:22

Description

Module of 400W audio amplifier using 4 pairs of MOS FET IRFP240 + IRFP9240 Q8 to be attached to one of the power FETs for thermal transfer (it is the superdiode).

Design Drawing

schematic diagram

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FET400 Schematic
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PCB

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FET400 PCB
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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	0.47	R42,R38,R39,R28,R40,R29,R41,R30,R27,R31,R43,R32,R44,R33,R45,R34	RES-11.5MMX4.5MM-2WS	16
2	MJE350	Q9,Q10	SOT-32	2
3	470	R21,R2,R19,R20,R22,R26,R25,R24,R23,R36	AXIAL-0.4	10
4	15k	R35	AXIAL-0.4	1
5	10	R37	AXIAL-0.4	1
6	47k	R3	AXIAL-0.4	1
7	100	R54,R55,R5,R14,R17,R18,R9	AXIAL-0.4	7
8	1k	R13	AXIAL-0.4	1
9	4.7k	R11	AXIAL-0.4	1
10	100k	R1	AXIAL-0.4	1
11	2.2k	R8,R4	AXIAL-0.4	2
12	18k	R7	AXIAL-0.4	1
13	120	R10	AXIAL-0.4	1
14	10k	R16,R6	AXIAL-0.4	2
15	Fuse transparent seat	F1,F2	FUSE-TH_L22.6-W9.0	2
16	7.5v	D3,D4	DO41-10	2
17	15V	D2,D1	DO41-10	2
18	10uF	C8	CAP-TH_BD5.0-P2.00-D0.8-FD	1
19	1N4007	D5,D6	DO-41	2
20	BC546BTA	Q2,Q3,Q4,Q1	TO-92(TO-92-3)-2.54	4
21	5K	PR1	RES-ADJ_3296W	1
22	IRFP240PBF	Q12,Q13,Q11,Q14	TO-247(AC)	4
23	56pF	C3,C7,C4	CAP-5.58.53	3
24	470nF	C10,C6	CAP-5.58.53	2
25	150p	C2	CAP-5.58.53	1
26	2.2uF	C1	CAP-5.58.53	1
27	10nF	C5	CAP-5.58.53	1
28	10k	R12,R15	AXIAL-0.6	2
29	IN	H1	HDR-2X1/2.54	1
30	330uF	C9	CAP-TH_BD8.0-P3.50-D1.0-FD	1
31	100uF	C14,C13,C12,C11	CAP-TH_BD10.0-P5.00-D1.0-FD	4
32	IRFP9240PBF	Q17,Q16,Q15,Q18	TO-247(AC)	4
33	MJE340	Q7,Q8,Q6,Q5	SOT-32	4
34	-70V	-70V	1287-2P_L7.9-W8.1-P5.08	1
35	+70V	+70V	1287-2P_L7.9-W8.1-P5.08	1
36	GND	U3,GND	1287-2P_L7.9-W8.1-P5.08	2
37	OUT	U1	1287-2P_L7.9-W8.1-P5.08	1