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Bench Power Supply

4 years ago 5572
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

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

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