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STD LED 10W 900mA Driver ATMega32 experimental
License: MIT
Mode: Editors' pick
- 0
Update time：
2019-03-07 15:14:28
Creation time：
2017-04-07 08:18:35
Description
LED 10W approx 900ma Mosfet driver (Rs depends from Vbe, Rs = Vbe / I for instance R7 (0.75) and Q6 (0.7) the I = ~930mA), logic provided by Atmaga32 or external source. Provide constant current source to up to 10 LED, OC1A and OC1B exposed via can be linked with other boards via TTL, SPI, I2C. External Level converters are required when connecting to targets with supply below 5V.
Gerber attached for tested version "CorrectedSize_10W LED MOSFET Driver.zip" and untested "..._v0.2"(minor track changes + auto-routed).
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | Fdd8447l | Q2,Q5,Q9,Q13,Q17,Q21,Q25,Q29,Q33,Q37 | DPAK | 10 |
| 2 | NPN | Q1,Q3,Q6,Q7,Q10,Q11,Q14,Q15,Q18,Q19,Q22,Q23,Q26,Q27,Q30,Q31,Q34,Q35,Q38,Q39 | SOT23-3 | 20 |
| 3 | 4.7Ω | R1,R6,R10,R14,R18,R22,R26,R30,R34,R38 | 0603 | 10 |
| 4 | 0.7/Idiode (930mA = 0.93) = 0.75ohm!!! STRICTLY DEPENDS FROM Vbe of Q6 - here Vbe 0.7 !!! | R2,R7,R11,R15,R19,R23,R27,R31,R35,R39 | R2512 | 10 |
| 5 | PNP | Q4,Q8,Q12,Q16,Q20,Q24,Q28,Q32,Q36,Q40 | SOT23-3 | 10 |
| 6 | 22Ω | R3,R8,R12,R16,R20,R24,R28,R32,R36,R40 | 0603 | 10 |
| 7 | 3.3Ω | R4,R9,R13,R17,R21,R25,R29,R33,R37,R41 | 0603 | 10 |
| 8 | 1000uF | C1,C7,C8,C9,C10,C11,C12,C13,C14,C15 | CT1206 | 10 |
| 9 | 10KΩ | R5 | 0805 | 1 |
| 10 | DHT-1163S | SW1 | SW2-4.0-6.0X3.0X2.5MM | 1 |
| 11 | 10UF-16V-10%(TANT) | C2 | EIA3216 | 1 |
| 12 | 22pF | C3,C4 | 0805 | 2 |
| 13 | 10uH | L1 | SMD-2P-L6.0XW6.0XH3.0MM | 1 |
| 14 | 100nF | C5,C6,C16,C17 | C0805 | 4 |
| 15 | ATmega32A-AU | U1 | TQFP44 | 1 |
| 16 | 10PIN | JP1 | B10B-PH-K-S | 1 |
| 17 | LM7805L-TA3-T | U2 | TO-220(TO-220-3) | 1 |
| 18 | PROG_ETC | J1 | M2X5 | 1 |
| 19 | 4k7 | R42 | 0603 | 1 |
| 20 | 1k8 | R43,R45,R47,R51 | 0603 | 4 |
| 21 | 3k3 | R44,R46,R48,R52 | 0603 | 4 |
| 22 | PINHD-2X3 | JP15 | 2X03 | 1 |
| 23 | PINHD-1X1 | JP4,JP5,JP6,JP7,JP8,JP9,JP10,JP11,JP12,JP13 | 1X01 | 10 |
| 24 | GND_LED | JP16 | 2X03 | 1 |
| 25 | VCC_+12V | JP2 | 2X03 | 1 |
| 26 | TIMER1 | JP3 | 1X03 | 1 |
| 27 | LED_POS_+12V | U3 | 1X10-BIG | 1 |
| 28 | SMAQ-5032B | X1 | IQG5032B | 1 |
| 29 | ADC | JP14 | 1X08-BIG | 1 |
| 30 | LM1117TO252 | U4 | TO252 | 1 |
| 31 | Micro_SD_MMC_a14061000ux0287 | P1 | MICRO_SD_MMC_A14061000UX0287 | 1 |
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