DIY mini inverter 11-21V 150W

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STD DIY mini inverter 11-21V 150W

Arduino

Power

Industrial_Electronics

License: CC-BY 3.0

Mode:

Editors' pick

Cloned from Power bank 18V inverter

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Update time： 2022-01-14 08:07:15

Creation time： 2020-12-28 23:56:38

Description

Main Video link: [https://youtu\.be/E\_IEguHZm\_k](https://youtu.be/E_IEguHZm_k) This Post shows how to design and build a compact modified sine wave inverter that has all the necessary safety features to ensure stable and long operation. Because the inverter is software controlled, many other functions and voltage inputs can be enabled. One unique thing about this inverter is that it contains a tap changer, which makes it possible to switch taps to suit different input and output voltages, such as an inverter with a selectable output voltage of 110 or 220V.

Design Drawing

schematic diagram

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11-21V inverter full schmatic copy
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PCB

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11-21V inverter board 150W copy
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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	SS34_C8678	D7	DO-214AC_L4.3-W2.7-LS5.3-RD	1
2	AVR ISP 6-Pin	P2	HDR-3X2/2.54	1
3	TPS54331DR	U6	SOIC-8_L5.0-W4.0-P1.27-LS6.0-BL	1
4	78L05G-AB3-R	U4	SOT-89-3_L4.5-W2.5-P1.50-LS4.2-BR	1
5	22K	R23,R24	R0603	2
6	8.2nF	C10,C16,C23,C30	C0603	4
7	2 Pin Header (5mm)	U1	2 PIN HEADER(5MM)	1
8	SLT038125T220MUB 22uH	U2	IND-TH_L12.5-W6.5-P8.00-D0.5	1
9	22uF	C9,C15,C19,C33,C37	C0805	5
10	ZMM5V6	D9	LL-34_L3.5-W1.5-RD	1
11	EL357N(B)(TA)-G	U12,U15,U16,U17,U18	OPTO-SMD-4_L4.4-W4.1-P2.54-LS7.0-TL	5
12	1nF	C20	C0603	1
13	NTC10K	U21	NTC10K	1
14	0.025	R37,R38	R2512	2
15	ES3GF	D1,D2,D3,D4	SMAF_L3.5-W2.6-LS4.7-RD	4
16	SG3525AP013TR	U11	SOIC-16_L9.9-W3.9-P1.27-LS6.0-BL	1
17	100uF	C6,C7,C8	CAP-TH_BD5.0-P2.00-D0.8-FD	3
18	FUSE 15A DC	F1	FUSE_CAR_MEDIUM	1
19	PIN Batt+	SX1	PTH_39MIL	1
20	PIN	BATT-	PTH_39MIL	1
21	SS-12D10L5	SW2,SW1	SW-TH_SS-12D10L5	2
22	22	R26,R32,R33,R43,R50,R51,R56	R0603	7
23	1000uF	C17	CAP-TH_BD10.0-P5.00-D1.0-FD	1
24	100nF	C13,C14,C18,C21,C36,C32,C5	C0603	7
25	330uF	C2	CAP-TH_BD8.0-P3.50-D1.0-FD	1
26	1N4761A_C261287	D5,D6	DO-41_BD2.4-L4.7-P8.70-D0.9-RD	2
27	MOLEX X2 2.54mm	J1,J2	MOLEX-1X2 2.54MM	2
28	10K	R2,R3,R4,R5	R1206	4
29	68nF	C22	C0603	1
30	22uF	C1	CAP-TH_BD12.5-P5.00-D1.2-FD	1
31	1K	R42,R45,R48,R53,R54,R63,R64,R65	R0603	8
32	16MHz	X2	OSC-SMD_4P-L3.2-W2.5-BL	1
33	470K	R40	R0603	1
34	5.6K	R25	R0603	1
35	Transformer EC2840 (2 extra AUX winding with Center taps)	U9	EC2834 PCB LAYOUT WITH 2 AUX	1
36	2K	R22,R34,R35,R31,R46,R47,R59,R60,R6,R7	R0603	10
37	10K	R27,R41	RES-ADJ-TH_3296W	2
38	10K	R21,R28,R29,R57,R61,R62,R1	R0603	7
39	2.2nF	C11	C0603	1
40	RESISTOR_0.5W 120K	NO,NO1,NO2	RESISTOR_AXIAL-0.5	3
41	IRF840	Q11,Q13,Q12,Q14	TO-220-3_L10.0-W4.5-P2.54-L	4
42	MOLEX-1X5P-2.54MM	H1	MOLEX-1X5P-2.54MM	1
43	10pF	C12	C0603	1
44	MMBT3904-C20526	Q15,Q16,Q18	SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR	3
45	MMBT3904	Q1	SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR	1
46	5MM RGB LED	LED1	LED-5.8-RGB	1
47	MR30PB-FB	U3	MR30PB-FB	1
48	B5819W_C8598	D13,D14,D15,D16,D17,D18	SOD-123_L2.8-W1.8-LS3.7-RD	6
49	NCEP60T12A	Q7,Q6,Q8	TO-220-3_L10.0-W4.5-P2.54-L	3
50	22pF	C3,C4	C0402	2
51	ATMEGA328P-AU	U19	TQFP-32_L7.0-W7.0-P0.80-LS9.0-BL	1
52	100nF	C26	CAP-TH_L13.0-W5.0-P10.00-D1.0	1