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Bench Power Supply

3 years ago 4137
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  • BOM
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Description

WARNING This design needs to be revised if you intend to use interrupts for the encoders. I will rework the entire thing to address a few issues, se be warned if you base your design on it.

MSP430-based voltage and current adjustable power supply. Aiming for 0-12V, 0-1A, but can easily be modified for higher voltages and currents. No pre-tracking switchmode for now, might be a good idea for higher voltages and amperage.

Documents

V1.0

V1.1 - single board

V1.2 - 2 layer design

v1.2

v5_sot23

ver5

BOM

ID Value Qty. Package Components
1 0.25 2 RC32 R1 SHUNT,R1SHUNT
2 LMP7704 1 TSSOP-14 LMP7704
3 MSP430G2553 1 PW28 MSP430
4 AD8212 1 MSOP-8 AD8212
5 4k 2 R0805 R4,R2
6 2M 1 R0805 R10
7 10k 5 R0805 R14,R3,R15,R1,R11
8 DCBARREL 1 DCJACK_2MM_SMT +7-16V
9 .1u 10 C0805 C1,C10,C15,C2,C6,C7,C5,C14,C8,C18
10 10u 2 C1206 C4,C3
11 Voltage Set 1 ROTARY_ENC_PLAIN VOLTAGE
12 Current Set 1 ROTARY_ENC_PLAIN CURRENT
13 Current 2 7-SEGMENT-4DIGIT-COUNTER MA,AMPS
14 MAX7219 1 S024W MAX7219
15 Voltage 1 7-SEGMENT-4DIGIT-COUNTER VOLTS
16 25k 1 R0805 R13
17 7805 2 TO252 5V LDO,5VLDO
18 OUT 1 Single Through Hole OUT
19 GND 1 Single Through Hole GND
20 NPN 1 SOT223 Q1
21 1u 4 C0805 C13,C16,C20,C22
22 SK35A 3 DO214 D8,D1,D2
23 AD5669 1 TSSOP-16 AD5669
24 PROGRAM 1 HDR1X4 JP1
25 1n 1 C0805 C19
26 1000 1 R0805 R6
27 8M 1 R0805 R9
28 100 1 R0805 R16
29 LT1461ACS8-2.5PBF 2 SOIC-8 3V3 REF,3V3REF
30 LT3081 1 TO-220-7 U1
31 22u 1 C2312 C17
32 1k 2 R0805 R5,R7
33 FAN 1 1X2 FAN
34 LM334M 1 SOIC-8 U3
35 2.2u 3 C1206 C9,C11,C12
36 NMOS_D 1 SOT23 M1
37 Con_4x2_pin 1 PIN_SOCKET_4X2 J4
38 Voltage Set 1 ROTARY_ENC_PLAIN_GOOD VOLTAGE
39 Current Set 1 ROTARY_ENC_PLAIN_GOOD CURRENT
40 NPN 1 SOT23 Q1
41 4M 1 R0805 R2
42 1M 1 R0805 R5
43 1 6 R0805 R20,R22,R23,R24,R25,R26
44 0 1 R0805 R8

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