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Std edition 12V to 24V Battery Charger

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License: Public Domain

Published Time: 2022-04-04 23:59:07
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Description

The attached circuit is a 12V to 24V battery charger, originally designed for charging a 24V mobility scooter from a car 12V outlet. It has boost charge and trickle charge control, and can deliver upto 3A. It can be modified to deliver higher current by upgrading the MOSFET.

The PCB is designed to fit an Evatron REAS80 Extruded Aluminium Enclosure 80x64x30mm (Order Code: 30-3555 www.rapidonline.co.uk) 2 x Evatron RLS80 Mounting Lug Dovetails On Side of Any E-case Enclosure 80mm (Order Code: 30-3564) 2 x Evatron RPAN1 Natural Aluminium End Plate for Reas Type Enclosures 64x30mm (Order Code: 30-3565)

design drawing
schematic diagram
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PCB
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ID Name Designator Footprint Quantity
1 22uF C1 CAP-T7361-V 1
2 100nF C2,C6 0805 2
3 470nF C3 0805 1
4 47uF C4 CASE-E_7343 1
5 220nF C5 0805 1
6 RS3MC D1 SMC(DO-214AB) 1
7 MBR1035 D2 TO-220AC 1
8 S1 D3 LED-5MM 1
9 S2 D4 LED-5MM 1
10 PWR D5 LED-5MM 1
11 5A F1 F-2.50A-30V 1
12 33uH L1 L123123 1
13 IN P1,P2 WJ301V-5.00-2P 2
14 TIP147 Q1 TO-247_TO-3P_HORIZONTAL 1
15 BS170 Q2,Q3,Q4,Q5 SOT-23 4
16 2K R1 0805 1
17 30K R2 0805 1
18 1K R3 0805 1
19 1.5K R4 0805 1
20 0.2 R5 DIP-RES-24.5MMX8MM 1
21 130R R6 0805 1
22 480k R7 0805 1
23 16k R8 0805 1
24 47K R9 0805 1
25 560k R10 0805 1
26 240R R11 0805 1
27 470R R12 0805 1
28 2k2 R13,R14,R15 0805 3
29 LM2585S-ADJ U1 TS5B 1
30 BQ24450DWTR U2 DW16_N 1

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