STEVAL-ILL028V1 RGB LED driver for color displays and backlighting based on the STP1612PW05 and STM32 Data brief Features ■ Three STP1612PW05 (in QFN24 4 x 4 mm packages) connected to 16 RBG highbrightness LEDs ■ One STM32 microcontroller using an internal HS oscillator ■ One ST1S10 high-efficiency switching DC-DC power supply ■ 7.5 - 18 V DC power supply with undifferentiated polarity and overvoltage protection ■ DC input current: 0.7 A max, standard supply connector ■ LED current regulation ■ Test points for each main signal ■ Microcontroller firmware update through JTAG interface ■ Error LED and overtemperature LED for each driver ■ 3 jumpers to disconnect the LEDs from the driver to test error detection mode ■ 3 jumpers to enable LED shorting from the driver to test error detection mode ■ Mini USB for board-to-PC connection ■ Incudes firmware to evaluate board features in standalone and non-standalone modes: – Adjustable color and brightness of each LED – Animated text – GUI software for LED diagnostics ■ RoHS compliant STEVAL-ILL028V1 controlled through an STM32 microcontroller SPI interface and DMA (optional). Description The STEVAL-ILL028V1 demonstration board is an RGB LED driver for color displays and backlighting, designed as a platform for demonstrating the performance of the STP1612PW05 independent PWM LED driver, June 2010 Doc ID 17442 Rev 1 For further information contact your local STMicroelectronics sales office. 1/7 www.st.com 7 2/7 Doc ID 17442 Rev 1 2 +: #. '--,7' 6 (OLE (/,% (OLE (/,% $ISTANCEHOLE $$$ 2/( 2/( : 3 (OLE (/,% $$$ 2/( 2/( 4 2 6AR2EZ +: 3 6 2 : # N& 6 # N& #%.4%2 $ISTANCEHOLE $ISTANCEHOLE (OLE (/,% $$$ 2/( 2/( 2 : # N& 6 ,%&4 !& 2 # N& 2 : $$$ 34 34?,/'/ # N& !$# $ISTANCEHOLE 0 0OWER FORSERIAL 3 *234 2%3%4%8)4 2 # N& 0 3IGNALFORSERIAL *4234 *4$) *4-3 *4#+ *24#+ *4$/ *234 $"'21 $"'!#+ 6 6 6 N& # $ # & SIZE! 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STEVAL-ILL028V1 Schematic diagram Microcontroller, USB, power supply 3/7 4/7 Doc ID 17442 Rev 1 $ $ $ : 2 : 2 : 2 : 2 : 2 #2 #' #" #2 $ #' $ #" #2 $ #' $ #" $ $ $ $ #2 #' #" #2 $# #' $ #" ! ! $ $ #2 #' #" !& ! #2 #' #" $ ! 2'",%$ #2 #' #" ! 2'",%$ #2 #' #" 6 ! $ : 2 : 2 #2 $ #' $ #" #2 $ #' $ #" ! 2'",%$ #2 #' #" $ ! 2'",%$ #2 #' #" 6 ! 6 ! $ $ : 2 : 2 #2 $ #' $ #" #2 $ #' $ #" #2 #' #" $ ! ! 2'",%$ #2 #' #" $ ! 4 6 ! ! 2'",%$ #2 #' #" $ $ $ #2 #' #" $ $ #2 #' #" $ #2 $ #' $ #" : 2 ! 2'",%$ #2 #' #" 2'",%$ : 2 ! 2'",%$ ! 6 ! $ $ $ #2 #' #" #2 #' #" $ 2'",%$ #2 #' #" 6 ! : 2 #2 $# #' $ #" $ $ : 2 $ 6 ! $ 2'",%$ ! 6 ! 2'",%$ #2 #' #" $ $ : 2 $ $ #2 #' #" #2 $# #' $ #" $ $ $ : 2 : 2 2 $ $ 2'",%$ ! 6 ! 6 ! $ 6 ! 2'",%$ #2 #' #" $ 2'",%$ #2 #' #" $ 2'",%$ #2 #' #" $ !- 6 ! 6 ! 6 ! 6 ! 6 ! Figure 3. $ $ Schematic diagram STEVAL-ILL028V1 High-brightness LEDs Doc ID 17442 Rev 1 $# $ ,% $ $ $ $ $ 2 K: 340 1&. /54 /54 /54 /54 /54 /54 (EADER $ $ (EADER 0 $ $ $ $ $ $ $# $ N& 340 1&. /54 /54 /54 /54 /54 /54 $ 6 $ $ $ (EADER 0 $ $ 4 $ $ $ $ $ $ $# $ N& 6 # !& 2%84 3$/ 6$$ 07#,+ 5 34007 07#,+ 3$/) /54 /54 /54 #//, /54 '.$ /54 ,% /54 /54 /54 /54 /54 (EADER 0 ,% $ $ $ $ $ #,+ 3$) 3$/) #,+ 6 2 2 K: $ 6 # $ $ $ 6 $ /54 /54 /54 #//, /54 '.$ /54 ,% /54 /54 /54 /54 /54 0 2%84 3$/ 6$$ 07#,+ #,+ 3$) 5 34007 07#,+ 3$/) 6 3$) (EADER 0 ,% $ $ $ $ $ 2 K: 340 1&. /54 /54 /54 /54 /54 /54 $ 6 $ $ $ (EADER 0 $ $ /54 /54 /54 #//, /54 '.$ /54 ,% /54 /54 /54 /54 /54 $ $ $ $ $ $ !- N& 6 # 5 34007 07#,+ 3$/ #,+ 3$) 6$$ 3$/ 2%84 07#,+ 3$/) #,+ 6 Figure 4. #,+ STEVAL-ILL028V1 Schematic diagram LED drivers 5/7 Revision history 2 STEVAL-ILL028V1 Revision history Table 1. 6/7 Document revision history Date Revision 16-Jun-2010 1 Changes Initial release. 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