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Std EditionDIY mini inverter 11-21V 150W

Profile: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.

License: CC-BY 3.0

Project source: Cloned from Power bank 18V inverter

Published Time:2020-12-29 07:56:38
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Description

Main Video link:  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.

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11-21V inverter full schmatic copy

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11-21V inverter board 150W copy

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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

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