SpeLuce: Difference between revisions
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| Line 64: | Line 64: | ||
|6|| || ||RC4||O | |6|| || ||RC4||O | ||
|- | |- | ||
|7|| || ||RC3/ | |7|| || ||RC3/OPA2OUT||O | ||
|- | |- | ||
|8|| || ||RC6||O | |8|| || ||RC6/OPA2IN-||O | ||
|- | |- | ||
|9|| || ||RC7||I | |9|| || ||RC7/OPA2IN+||I | ||
|- | |- | ||
|10|| || ||RB7||I | |10|| || ||RB7||I | ||
| Line 74: | Line 74: | ||
|11|| || ||RB6||I | |11|| || ||RB6||I | ||
|- | |- | ||
|12|| || ||RB5||I | |12|| || ||RB5/OPA1IN+||I | ||
|- | |- | ||
|13|| || ||RB4||I | |13|| || ||RB4/OPA1IN-||I | ||
|- | |- | ||
|14|| || ||RC2|| | |14|| || ||RC2/OPA1OUT|| | ||
|- | |- | ||
|15|| || ||RC1|| | |15|| || ||RC1/PWM4OUT|| | ||
|- | |- | ||
|16|| || ||RC0|| | |16|| || ||RC0/PWM3OUT|| | ||
|- | |- | ||
|17|| || ||RA2|| | |17|| || ||RA2/AN2|| | ||
|- | |- | ||
|18|| || ||RA1 || | |18|| || ||RA1/AN1|| | ||
|- | |- | ||
|19|| || ||RA0|| | |19|| || ||RA0/AN0|| | ||
|- | |- | ||
|20|| ||VSS|| || | |20|| ||VSS|| || | ||
Revision as of 17:09, 30 July 2014
Fotofori robusti
LED
buck converter
IRLML2502 http://www.irf.com/product-info/datasheets/data/irlml2502.pdf
- http://www.onsemi.com/pub/Collateral/TND388-D.PDF Effects of High Switching Frequency on Buck Regulators
- http://www.ti.com/litv/pdf/snva598 Driving LEDs: To Cap or Not to Cap
- http://ww1.microchip.com/downloads/en/appnotes/01427a.pdf AN1427 High-Efficiency Solutions for Portable LED Lighting
- http://ww1.microchip.com/downloads/en/appnotes/01047a.pdf AN1047 Buck-Boost LED Driver Using the PIC16F785 MCU
Current sensing
- http://ledsmagazine.com/features/10/10/15
- http://www.aosmd.com/res/application_notes/power-ics/PIC-007.pdf Selection of Three Locations of Current Sense Resistor in Buck Converter
Sincrono
- http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1824&appnote=en560160 Efficiency Analysis of a Synchronous Buck Converter using Microsoft Office Excel-Based Loss Calculator
High Side Drivers
- http://www.linear.com/product/LTC1982 Micropower High Side Switch Controllers in SOT-23
Asincrono
- duty cycle
- up
- (3.3 ∕ 4.8) = 0.68
- down
- 0.31
- efficienza
- 0.31 ⋅ (0.385 ∕ 3.3) ≈ 0.03 di perdita sul diodo
http://www.st.com/web/catalog/sense_power/FM64/CL1571/SC541/SS1617/PF64858 Low Drop Power Schottky Rectifier 1A/0.385vf http://www.st.com/web/catalog/sense_power/FM64/CL1571/SC541/SS1617/PF64876 2A/0.43vf
uC
- nuovo http://www.microchip.com/wwwproducts/Devices.aspx?product=PIC16F1709 con opamp e pwm
Mappa pin
pic16f1709
| Pin | Funzione | Nome | porta sul uC | I/O |
|---|---|---|---|---|
| 1 | VDD | |||
| 2 | RA5 | O | ||
| 3 | RA4 | O | ||
| 4 | MCLR | RA3/MCLR | ||
| 5 | RC5 | O | ||
| 6 | RC4 | O | ||
| 7 | RC3/OPA2OUT | O | ||
| 8 | RC6/OPA2IN- | O | ||
| 9 | RC7/OPA2IN+ | I | ||
| 10 | RB7 | I | ||
| 11 | RB6 | I | ||
| 12 | RB5/OPA1IN+ | I | ||
| 13 | RB4/OPA1IN- | I | ||
| 14 | RC2/OPA1OUT | |||
| 15 | RC1/PWM4OUT | |||
| 16 | RC0/PWM3OUT | |||
| 17 | RA2/AN2 | |||
| 18 | RA1/AN1 | |||
| 19 | RA0/AN0 | |||
| 20 | VSS |
- http://www.element14.com/community/servlet/JiveServlet/downloadBody/27644-102-1-76820/01138A.pdf
- http://ww1.microchip.com/downloads/en/devicedoc/41214a.pdf PICmicro® CCP and ECCP Tips 'n Tricks
- http://ww1.microchip.com/downloads/en/appnotes/01171c.pdf How To Use The Capacitive Sensing Module (CSM)
- http://ww1.microchip.com/downloads/en/AppNotes/01103a.pdf Software Handling for Capacitive Sensing
- http://www.epd-ee.eu/article/8346 10 LED Driver Problems Solved by the PIC12HV752 MCU