Editor Version ×
Standard

1.Easy to use and quick to get started

2.The process supports design scales of 300 devices or 1000 pads

3.Supports simple circuit simulation

4.For students, teachers, creators

Profession

1.Brand new interactions and interfaces

2.Smooth support for design sizes of over 30,000 devices or 100,000 pads

3.More rigorous design constraints, more standardized processes

4.For enterprises, more professional users

STD MPPT Battery Charger LT8490

  • 1.9k
  • 0
  • 3

No Profile

License: GPL 3.0

Creation time: 2020-09-29 18:28:42
Update time: 2021-12-05 09:36:41
Description
This charge controller board based on LT8490 MPPT chip can be modified to vary its charge characteristics. Doing so requires replacing resistors. Hence I needed a documented schematic and existing resisor values - the reason for reverse engineering the board. Ebay listing for board: https://www.ebay.com/itm/1PC-400-W-MPPT-Solar-Controller-LT8490-Single-Chip-Intelligent-Control-Battery/312731343470?_trkparms=aid%3D555021%26algo%3DPL.SIMRVI%26ao%3D1%26asc%3D20190711100440%26meid%3Dfa08611f359d4ccfb7df12a7de7f602a%26pid%3D100752%26rk%3D1%26rkt%3D3%26mehot%3Dco%26sd%3D164025628854%26itm%3D312731343470%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplRVIAMLv5WebWithPLRVIOnTopCombiner&_trksid=p2047675.c100752.m1982 Thanks go to Craig Peacock for the work he did: https://www.beyondlogic.org/lt8490-mppt-buck-boost-multi-chemistry-battery-charger/ My schematic is largely based on his with modifications reflecting the actual Ebay pcb and resistor values.
Design Drawing
schematic diagram
1 /
PCB
1 /
Empty
ID Name Designator Footprint Quantity
1 R010 R1,R34,R11,R12 R2512 4
2 R005 R53,R2 R2512 2
3 1m L1 L_AXIAL-0.6 1
4 LED-0805_R D4 LED0805_RED 1
5 ??u L2 L0805 1
6 LT8490EUKJ-2-fg U2 QFN-64_L11.0-W7.0-P0.50-BL-EP 1
7 LT8490EUKJ-fg U1 QFN-64_L11.0-W7.0-P0.50-BL-EP 1
8 1802 R51,R8 R0805 2
9 0 R52,R18 R0805 2
10 9312 R49 R0805 1
11 DNF R50 R0805 1
12 3k65 R42,R43 R0805 2
13 750 R46,R47 R0805 2
14 2743 R5,R3 R0805 2
15 2102 R16 R0805 1
16 3011 R39 R0805 1
17 3242 R40 R0805 1
18 9762 R48 R0805 1
19 1152 R44 R0805 1
20 10kRT R45 R0805 1
21 8061 R19 R0805 1
22 1963 R4 R0805 1
23 1051 R21 R0805 1
24 4871 R38 R0805 1
25 3091 R37 R0805 1
26 1333 R36 R0805 1
27 ?? R??,R?? R0805 2
28 2003 R41 R0805 1
29 1R0 R26,R25,R27,R33,R29,R32 R0805 6
30 100 R24,R10,R9,R22 R0805 4
31 5362 R14 R0805 1
32 2322 R13 R0805 1
33 1243 R35 R0805 1
34 2612 R17 R0805 1
35 2R0 R7 R0805 1
36 MB515 D7,D8 SMC_L6.9-W5.9-LS7.9-RD 2
37 ES1D D1,D2 SMA_L4.4-W2.8-LS5.4-RD 2
38 CCR D5 SMA_L4.4-W2.8-LS5.4-RD 1
39 470u80V C9,C19 CAP-D12.5×F5.0 2
40 470u80V C22,C6 CASE-A_3216 2
41 ??u C2,C8,C29,C28,C30,C32,C31,C24,C25,C26,C21,C23 C1206 12
42 10n C1,C40,C39,C17,C37 C0805 5
43 ??n C??,C14,C12,C11,C10,C4,C5,C20,C3 C0805 9
44 ?? C42,C41 C0805 2
45 ??u C38,C16,C44 C0805 3
46 LED-0805_G D3 LED0805_GREEN 1
47 Temp J1 HDR1X2 1
48 VINR J2 HDR1X2 1
49 SOLAR J3 HDR1X2 1
50 BAT+ J4 HDR1X2 1
51 AOB266L Q1,Q2,Q3,Q4,Q7,Q6 TO-263-2_L10.0-W9.1-P5.08-LS15.2-TL 6

Unfold

Project Attachments
Empty
Project Members
Related Projects
Change a batch
Loading...
Add to album ×

Loading...

reminder ×

Do you need to add this project to the album?

服务时间

周一至周五 9:00~18:00
  • 0755 - 2382 4495
  • 153 6159 2675

服务时间

周一至周五 9:00~18:00
  • 立创EDA微信号

    easyeda

  • QQ交流群

    664186054

  • 立创EDA公众号

    lceda-cn