2 layers49 × 30 mm
2 layers100 × 62 mm
Pcb lm3424 4x
rleh/constant-current-led-driver2Constant Current LED Driver
- Size
- 100 × 62 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 216
- Nets
- 29
- Pads
- 628
- Tracks, vias
- 948, 652
- Pours
- 36
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 18 Aug 2019
- Updated
- 26 Aug 2019
Overview
Pcb lm3424 4x is an open-source printed circuit board by rleh, from the rleh/constant-current-led-driver repository on GitHub. It is a 2-layer board of 100 × 62 mm with 216 parts on 29 nets, routed with 948 tracks and 652 vias.
It is built around the LM3424MH, PSMN025-80YLX and MSS1210-104KED. Its parts include 76 resistors, 72 capacitors, 32 connectors, 12 transistors and 4 ICs.
Main components
3
LM3424MH
HTSSOP-20-EP-40℃~+125℃ 1 164kHz~669kHz 1A 4.5V~75V Analog、PWM External HTSSOP-20-EP LED Drivers ROHSTexas InstrumentsLED Drivers
PSMN025-80YLX
SOT-669-55℃~+175℃ 1 N-channel 17.1nC@5V 2.1V 2.703nF 25mΩ@10V 37A 80V 95W SOT-669 MOSFETs ROHSNexperiaMOSFETsMSS1210-104KED
1212100uH 106mΩ 2.4A 4A ±10% 1212 Power Inductors ROHSCoilcraftPower Inductors
README
README.mdConstant Current LED Driver
WORK IN PROGRESS!
Goal of this project is to design a constant current LED driver for high power LED modules. To be able to use large LED modules (e.g. V_FW = 35V) or multiple modules in series boost topology is used. The maximum output voltage is configurable up to 70V to allow two 35V modules in series.
TIs LM3424 chip is used in this design.
The current is adjustable, 827mA for the LED module Nichia NFCLJ108B-V1 and 389mA for Nichia NFCLL060B-V1 are testet.
To adjust the LED brightness a PWM input is available, that can be used for strobe light too. Additionally multiple driver modules can be syncronized using the SYNC input.
In order to protect the LED from thermal destruction, the current is reduced from a temperature of 70°C until it is switched off at approx. 90°C (thermal foldback). For this purpose an NTC (Vishay NTCLE100E3104JB0) can be attached to the LED. If this feature is not required, a 100kΩ must be soldered in instead of the NTC.
Any 18V..20V (cheap) notebook power supply with a sufficient power rating can be used as an AC adapter.
LED Driver PCB
Specs
- Input: 12V to 24V
- Output: Up to 20 LEDs (70V) at 827mA or 389mA
- 70°C - 90°C Thermal Foldback
- 1.5MHz Switching Frequency
- PWM Dimming up to 30 kHz (?)
Parts
| Designator | Part | MPN | Quantity | Prize@1 | Prize@10 |
|---|---|---|---|---|---|
| U1 | LM3424 | LM3424MHX | 1 | 2.73$ | 2.45$ |
| Q2,Q3 | PSMN025-80YLX | PSMN025-80YLX | 2 | 0.57$ | 0.51$ |
| L1 | WE-PD 7447709220 | 7447709220 | 1 | 2.41$ | 2.20$ |
| L1 | or MSS1210-153ME | MSS1210-153ME | 1 | 2.19€ | 1.96€ |
| D1 | VSSAF5M10-M3/H | VSSAF5M10-M3/H | 1 | 0.45$ | 0.36$ |
| D1 | or SL510AFL-TP | SL510AFL-TP | 1 | 0.54$ | 0.46$ |
| Q1 | 2N7002 | T2N7002AK,LM | 1 | 0.15$ | 0.13$ |
| NTC | NTCLE100E3104JB0 | NTCLE100E3104JB0 | 1 | 0.69$ | 0.57$ |
| C4 | EEH-ZC1K470P | EEH-ZC1K470P | 1 | 2.14$ | 1.72$ |
| C1,C12,C13 | 4.7µF, 100V, X7R, 1210 | C1210X475K101T | 3 | 0.41$ | 0.30$ |
| C2,C3,C14 | 10µF, 100V, X7R, 2220 | FS55X106K101EHG | 3 | 0.47$ | 0.35$ |
| R15 | 100mΩ, 0805, 1W | RUT2012FR100CS | 1 | 0.30$ | 0.26$ |
| R13 | 60mΩ, 0805, 1W | RLP73M2AR062FTDF | 1 | 0.52$ | 0.45$ |
| other R | 8 distinct values | MPN | 17 | 0.05$ | 0.01$ |
| other C | 5 distinct values | MPN | 10 | 0.10$ | 0.02$ |
Total Cost: approx. 14$ @ 1pcs; <12$ @ 10pcs
License
Copyright Raphael Lehmann 2019
Licensed under CERN OHL Version 1.2
Parts
216| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 100n | Capacitor_SMD:C_0603_1608Metric | C5, C5, C5, C5, C8, C8, C8, C8, C11, C11, C11, C11, C16, C16, C16, C16 |
| 16 | 15k | Resistor_SMD:R_0603_1608Metric | R4, R4, R4, R4, R7, R7, R7, R7, R8, R8, R8, R8, R12, R12, R12, R12 |
| 12 | 0 | Resistor_SMD:R_0603_1608Metric | R1, R1, R1, R1, R14, R14, R14, R14, R19, R19, R19, R19 |
| 12 | M3 | MountingHole:MountingHole_3.2mm_M3 | H1, H1, H1, H1, H2, H2, H2, H2, H3, H3, H3, H3 |
| 8 | 100p | Capacitor_SMD:C_0603_1608Metric | C17, C17, C17, C17, C18, C18, C18, C18 |
| 8 | 10k | Resistor_SMD:R_0603_1608Metric | R2, R2, R2, R2, R11, R11, R11, R11 |
| 8 | 1k8 | Resistor_SMD:R_0603_1608Metric | R3, R3, R3, R3, R17, R17, R17, R17 |
| 8 | 1k|470 | Resistor_SMD:R_0603_1608Metric | R9, R9, R9, R9, R10, R10, R10, R10 |
| 8 | 270n | Capacitor_SMD:C_0603_1608Metric | C6, C6, C6, C6, C7, C7, C7, C7 |
| 8 | 4k7 | Resistor_SMD:R_0603_1608Metric | R5, R5, R5, R5, R6, R6, R6, R6 |
| 8 | CIN | Capacitor_SMD:C_2220_5650Metric | C2, C2, C2, C2, C3, C3, C3, C3 |
| 8 | COUT | Capacitor_SMD:C_1210_3225Metric | C12, C12, C12, C12, C13, C13, C13, C13 |
| 8 | NTC | TestPoint:TestPoint_Pad_D2.0mm | J5, J5, J5, J5, J6, J6, J6, J6 |
| 8 | PSMN025-80YLX | Package_TO_SOT_SMD:LFPAK56 | Q2, Q2, Q2, Q2, Q3, Q3, Q3, Q3 |
| 4 | + | TestPoint:TestPoint_Pad_D2.0mm | J7, J7, J7, J7 |
| 4 | 100m 1W | Resistor_SMD:R_0805_2012Metric | R15, R15, R15, R15 |
| 4 | 120k | Resistor_SMD:R_0603_1608Metric | R16, R16, R16, R16 |
| 4 | 150 | Resistor_SMD:R_0603_1608Metric | R18, R18, R18, R18 |
| 4 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q1, Q1, Q1, Q1 |
| 4 | 2µ2 X7R 16V 0805 | Capacitor_SMD:C_0805_2012Metric | C9, C9, C9, C9 |
| 4 | 47p | Capacitor_SMD:C_0603_1608Metric | C15, C15, C15, C15 |
| 4 | 60m 1W | Resistor_SMD:R_0805_2012Metric | R13, R13, R13, R13 |
| 4 | CIN | Capacitor_SMD:CP_Elec_10x10.5 | C4, C4, C4, C4 |
| 4 | CIN | Capacitor_SMD:C_1210_3225Metric | C1, C1, C1, C1 |
| 4 | COUT | Capacitor_SMD:C_2220_5650Metric | C14, C14, C14, C14 |
| 4 | DNP | Capacitor_SMD:C_0603_1608Metric | C10, C10, C10, C10 |
| 4 | GND | TestPoint:TestPoint_Pad_D2.0mm | J4, J4, J4, J4 |
| 4 | LM3424 | Package_SO:ETSSOP-20-1EP_4.4x6.5mm_P0.65mm_EP3x4.2mm | U1, U1, U1, U1 |
| 4 | MSS1210-104KE | Inductor_SMD:L_12x12mm_H8mm | L1, L1, L1, L1 |
| 4 | PWM | TestPoint:TestPoint_Pad_D2.0mm | J1, J1, J1, J1 |
| 4 | SYNC | TestPoint:TestPoint_Pad_D2.0mm | J3, J3, J3, J3 |
| 4 | VIN | TestPoint:TestPoint_Pad_D2.0mm | J2, J2, J2, J2 |
| 4 | VSSAF5M10-M3/H (DO-221AC) | Diode_SMD:D_SMA | D1, D1, D1, D1 |
| 4 | – | TestPoint:TestPoint_Pad_D2.0mm | J8, J8, J8, J8 |
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Questions
How big is the Pcb lm3424 4x PCB?
It measures 100 × 62 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pcb lm3424 4x use?
216 parts, built around the LM3424MH, PSMN025-80YLX and MSS1210-104KED. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Pcb lm3424 4x KiCad files?
From the rleh/constant-current-led-driver repository on GitHub, at the commit this page was made from: the board is pcb_lm3424/pcb_lm3424_4x.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pcb lm3424 4x design in my own project?
Its repository states no licence, so its author keeps all rights: ask rleh before reusing the design.