DualPreRegPowerSupply

janni0609·2-Channel-PreReg-Powersupply·hardware_main/DualPreRegPowerSupply.kicad_pcb

About the DualPreRegPowerSupply PCB

DualPreRegPowerSupply is an open source RP2040/RP2350 PCB design by janni0609, published on GitHub. It is a 4-layer board measuring 99.6 × 100 mm, with 351 components from 97 distinct parts.

Its main chip is the Waveshare RP2350-Tiny, from the RP2040/RP2350 family. Other key parts include the TLV4387PWR, ISO6721RFBD, LT8612, LMV331 and ATTINY1614-SS. By type, the board carries 123 capacitors, 100 resistors, 31 diodes, 25 test points, 23 ICs and 16 transistors.

It belongs with the displays & leds and power & battery designs in this gallery.

From the project

A two-channel laboratory bench power supply, 0–36 V / 0–2 A per channel, fully isolated between channels. Each channel pairs a tracking switch-mode pre-regulator with a linear post-regulator, so it has the low output noise of a linear supply without the heat of dropping 36 V acro

Everything here is open: KiCad 10 schematics and layout for both boards, the firmware for all three microcontrollers, and the design calculations (loop stability, DC/DC dimensioning, ADC/DAC error budget) that back the component values.

DualPreRegPowerSupply, from the project README — From the project README

Main components on the DualPreRegPowerSupply

TLV4387PWRISO6721RFBDLT8612 LMV331 ATTINY1614-SS ADS1118IDGSMCP48FVB22AP7383LM2776XC6901D121MR-GLMR51606AP63200WUWaveshare RP2350-Tiny

DualPreRegPowerSupply bill of materials (BOM)

351 components, 97 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
2	TLV4387PWR	TSSOP-14_4.4x5mm_P0.65mm	U101, U301
2	ISO6721RFBD	SOIC-8_3.9x4.9mm_P1.27mm	U102, U801
2	LT8612	QFN-28-1EP_3x6mm_P0.5mm_EP1.7x4.75mm_ThermalVias	U104, U501
2	LMV331	SOT-353_SC-70-5	U105, U302
2	ATTINY1614-SS ATtiny1614-SS	SOIC-14_3.9x8.7mm_P1.27mm	U106, U802
2	ADS1118IDGS	TSSOP-10_3x3mm_P0.5mm	U107, U701
2	MCP48FVB22	MSOP-10_3x3mm_P0.5mm	U108, U702
2	AP7383	SOT-89-3	U109, U1002
2	LM2776	SOT-23-6	U110, U1003
2	XC6901D121MR-G	SC-74A-5_1.55x2.9mm_P0.95mm	U111, U1004
2	LMR51606	SOT-23-6	U601, U1501
1	AP63200WU	TSOT-23-6	U901
1	Waveshare RP2350-Tiny	Waveshare_PR2350_tiny	A401
1	FAN_4PIN Fan_4pin	FanPinHeader_1x04_P2.54mm_Vertical	M401
2	MMBT3906	SOT-23-3	Q101, Q501
4	BCP56	SOT-223	Q102, Q107, Q301, Q304
2	BSS138	SOT-23-3	Q103, Q302
2	TIP125	TO-220-3_Horizontal_TabUp	Q104, Q303
6	BSS138	SOT-23	Q105, Q106, Q801, Q802, Q901, Q1401
3	Power Input	PhoenixContact_MCV_1,5_2-G-3.81_1x02_P3.81mm_Vertical	J101, J601, J901

Show 77 more

Qty	Part	Footprint	Refs
2	CONN_01X03_PIN Conn_01x03_Pin	JST_SH_BM03B-SRSS-TB_1x03-1MP_P1.00mm_Vertical	J102, J801
2	CONN_02X02_ODD_EVEN Conn_02x02_Odd_Even	PinHeader_2x02_P2.54mm_Horizontal	J103, J802
2	Banana_Red	Banana_Cliff_FCR7350R_S16N-PC_Horizontal	J201, J402
2	Banana_Black	Banana_Cliff_FCR7350B_S16N-PC_Horizontal	J202, J403
1	CONN_02X04_ODD_EVEN Conn_02x04_Odd_Even	PinHeader_2x04_P2.54mm_Horizontal	J203
1	CONN_02X05_ODD_EVEN Conn_02x05_Odd_Even	IDC-Header_2x05_P2.54mm_Vertical	J204
1	CONN_01X04_PIN Conn_01x04_Pin	PinHeader_1x04_P2.54mm_Vertical	J205
3	3,5A	Fuse_1206_3216Metric	F101, F601, F901
2	3A	Fuse_1206_3216Metric	F102, F301
2	ACM4520-901-2P-T000 DLW5BTM102TQ2L	L_CommonModeChoke_Murata_DLW5BTMxxxSQ2x_5x5mm	FL101, FL601
2	NCU18XH103F60RB	R_0603_1608Metric	TH101, TH801
1	Thermistor_NTC	Flex NTC	TH201
16	TestPoint	SMD Test Point PCWCTE	TP108, TP112, TP201, TP202, TP203, TP401, TP402, TP403 +8
9	TestPoint_Alt	TestPoint_Keystone_5005-5009_Compact	TP306, TP307, TP308, TP602, TP603, TP604, TP1501, TP1502 +1
2	SMBJ40A	D_SMB	D101, D601
4	red LED 3V3	LED_0603_1608Metric	D103, D107, D801, D802
2	green LED 40V	LED_0603_1608Metric	D104, D602
3	green LED 3V3	LED_0603_1608Metric	D105, D903, D1001
2	green LED -5V	LED_0603_1608Metric	D106, D1002
2	SMBJ36A	D_SMB	D201, D401
1	SMBJ12A	D_SMB	D901
1	green LED 12V	LED_0603_1608Metric	D902
2	green LED PG	LED_0603_1608Metric	D904, D1401
10	1N4148WS	D_SOD-323	D1003, D1004, D1006, D1007, D1008, D1201, D1202, D1204 +2
2	MM3Z4V7T1G	D_SOD-323	D1005, D1203
2	33u VLS6045EX-330M	L_TDK_VLS6045EX_VLS6045AF	L101, L1001
2	10u 74438357100	L_Wuerth_MAPI-4030	L102, L501
2	1u	L_0805_2012Metric	L201, L401
1	6,8u LBC3225T6R8MR	L_1210_3225Metric	L901
24	10U 10u	C_1206_3216Metric	C101, C102, C105, C107, C120, C135, C136, C140 +16
28	100N 100n	C_0603_1608Metric	C103, C104, C106, C108, C109, C115, C117, C118 +20
7	1u	C_0603_1608Metric	C110, C122, C123, C203, C504, C507, C804
2	47N 47n	C_0603_1608Metric	C111, C303
2	27N 27n	C_0603_1608Metric	C112, C304
4	4,7u	C_0603_1608Metric	C113, C114, C701, C702
6	opt	C_0603_1608Metric	C119, C137, C506, C510, C908, C1401
6	10P 10p	C_0603_1608Metric	C121, C130, C134, C305, C306, C308
7	22U 22u	C_0805_2012Metric	C124, C131, C905, C906, C907, C1005, C1007
2	CHV1210N1K0103KXT	C_1210_3225Metric	C125, C602
12	10U 10u	C_0805_2012Metric	C127, C139, C142, C146, C202, C404, C901, C902 +4
2	1n	C_0603_1608Metric	C129, C508
2	1u	C_0805_2012Metric	C133, C1008
2	100U 100u	CP_Elec_8x10.5	C138, C604
4	100n	C_0603_1608Metric	C806, C1015, C1205, C1301
2	27n	C_0603_1608Metric	C807, C1302
2	10u	C_0805_2012Metric	C808, C1303
3	100P 100p	C_0603_1608Metric	C904, C1004, C1203
4	2,2u	C_0603_1608Metric	C1012, C1013, C1201, C1202
2	22P 22p	C_0603_1608Metric	C1014, C1204
19	10K 10k	R_0603_1608Metric	R101, R102, R103, R109, R113, R120, R201, R202 +11
13	1k	R_0603_1608Metric	R104, R105, R118, R125, R135, R137, R308, R404 +5
2	18K 18k	R_0603_1608Metric	R106, R303
4	0	R_0603_1608Metric	R107, R121, R304, R311
2	60,4k	R_0603_1608Metric	R108, R502
4	opt	R_0603_1608Metric	R110, R122, R503, R505
2	1,2k	R_0603_1608Metric	R112, R305
2	75K 75k	R_0603_1608Metric	R114, R1001
2	16,2k	R_0603_1608Metric	R115, R1002
4	2,2k 0,1%	R_0603_1608Metric	R116, R119, R306, R309
2	3,3k	R_0603_1608Metric	R117, R307
2	220	R_0603_1608Metric	R123, R312
8	2,4k	R_0603_1608Metric	R124, R136, R140, R803, R806, R905, R1003, R1401
2	4,99k	R_0603_1608Metric	R126, R507
4	33k 0,1%	R_0603_1608Metric	R127, R128, R313, R314
2	150	R_1206_3216Metric	R129, R315
3	62K 62k	R_0603_1608Metric	R130, R508, R903
2	11k 0,1%	R_0603_1608Metric	R131, R316
2	1k 0,1%	R_0603_1608Metric	R132, R317
2	100K 100k	R_0603_1608Metric	R133, R509
2	38K 38k	R_0603_1608Metric	R134, R601
2	100M 100m	R_2512_6332Metric	R138, R318
4	###	R_0603_1608Metric	R139, R901, R904, R1004
2	200M 200m	R_1206_3216Metric	R141, R319
2	47	R_0603_1608Metric	R142, R320
2	12k	R_0603_1608Metric	R807, R1301
2	10k	R_0603_1608Metric	R808, R1302
1	196K 196k	R_0603_1608Metric	R902

DualPreRegPowerSupply design files

The KiCad project lives in the janni0609/2-Channel-PreReg-Powersupply repository on GitHub; these links point at the commit this page was built from.

DualPreRegPowerSupply: common questions

What microcontroller does the DualPreRegPowerSupply use?

The DualPreRegPowerSupply is built around the Waveshare RP2350-Tiny, from the RP2040/RP2350 family.

How big is the DualPreRegPowerSupply PCB?

The DualPreRegPowerSupply measures 99.6 × 100 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the DualPreRegPowerSupply?

351 components, from 97 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the DualPreRegPowerSupply design files?

From the janni0609/2-Channel-PreReg-Powersupply repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the DualPreRegPowerSupply design in my own project?

The repository has no license, so all rights stay with janni0609. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the DualPreRegPowerSupply without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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janni0609
97.8 × 57.3 mm42 parts4LNo license0

DualPreRegPowerSupply

About the DualPreRegPowerSupply PCB

Main components on the DualPreRegPowerSupply

DualPreRegPowerSupply bill of materials (BOM)

DualPreRegPowerSupply design files

DualPreRegPowerSupply: common questions

What microcontroller does the DualPreRegPowerSupply use?

How big is the DualPreRegPowerSupply PCB?

How many components are on the DualPreRegPowerSupply?

Where can I download the DualPreRegPowerSupply design files?

Can I use the DualPreRegPowerSupply design in my own project?

Can I test firmware for the DualPreRegPowerSupply without the hardware?

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Front Panel

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