DESIGN NOTE Demo Board Power LED´s with Slider Ceramic Power LEDs & LED Driver Module & Wireless Power DNO001, BY J AN S TEPHAN 1. Introduction_________________________________________________ This design note refers to the 158 997 Power LEDs Slider Demo Board. With the LDHM MagI³C Power Module the feasibility of the colored as well as the white ceramic Power LEDs can be demonstrated. To run this board, the user can switch between two modes: the battery mode or via wireless power transfer. In the PCB, a capacitive touch sensor enables the adjustment of the dimming level. 2. Features ____________________________________________________ Input Voltage: Power Supply 1: 4 x AAA Batteries = (6 Vin) Or Power Supply 2: Qi compliant Wireless Power Or Power Supply 3: external Power Supply (4.5 – 10 Vin) Output Current: 350 mA (can be adjusted with 2 resistors; refer to table “ILED” on the Board) Dimming: 15 Dimming Levels @ 4 kHz White LEDs: 2700 K – 3000 K – 4000 K – 5000 K – 6000 K Color LEDs: Red (625 nm) – Yellow (590 nm) – Green (525 nm) – Blue (460 nm) Wireless Power Receiver Coil 16,7 µH – IR= 2.0 A (Qi compliant) Figure 1: 158 997 Demo Board with part descriptions in packaging DNO001, 2015-10-20, JSt Page 1 of 7 DESIGN NOTE Demo Board Power LED´s with Slider Ceramic Power LEDs & LED Driver Module & Wireless Power 3. Description / Manual _________________________________________ Battery Mode: In order to choose the battery mode, slide the switch to the position “Bat.”. To experience the light intensity, push the tact switch next to one of the LEDs on the board and hold it. Simultaneously tap on the touch control panel on the surface of the PCB and the LED will light up. Sliding over this area controls the dimming function. The touch signal is registered by a microcontroller (MCU), subsequently transformed to a PWM signal (15 steps @ 4 kHz) and transmitted to the DIM Pin of the LED driver module. The LED driver controls the dimming level of the LED. After 30 seconds the demo board will turn off automatically. To restart the demo board, tap on the “touch me” area again. Please Note: Move the slide switch to the WPC position to save energy and avoid an early emptying of the battery. WPC Mode: Move the slide switch to the WPC position. Take a Qi compliant WPC transmitter and put the demo board centered above it. The other functions are equal to the battery mode (“Bat.”). 4. Bill of Materials _____________________________________________ Parts Device / Value Size Order Code Supplier L2 10 µH 1210 744 764 10 Würth Elektronik H1 LED White 2700 K PLCC2_3535 158 353 027 Würth Elektronik H2 LED White 3000 K PLCC2_3535 158 353 030 Würth Elektronik H3 LED White 4000 K PLCC2_3535 158 353 040 Würth Elektronik H4 LED White 5000 K PLCC2_3535 158 353 050 Würth Elektronik H5 LED White 6000 K PLCC2_3535 158 353 060 Würth Elektronik D2 LED Driver TO-263-7 172 946 001 Würth Elektronik H10, H11, H12, H13 19.1 mm Spacer WA-SNSR 702 937 000 Würth Elektronik S1, S2, S3, S4, S5, S6, S7, S8, S9 Tact Switch Washable 6*6 mm 430 481 035 816 Würth Elektronik SW1 Mini Slide Switch 2.54 mm 450 301 014 042 Würth Elektronik L1 Wireless Power Charging Coil 3830 760 308 103 204 Würth Elektronik C9, C10 470n / 25 V KERKO0603 885 012 206 075 Würth Elektronik C3 1n5 / 50 V KERKO0603 885 012 206 084 Würth Elektronik C17, C19 10n / 50 V KERKO0603 885 012 206 089 Würth Elektronik C11, C18, C21 22n / 50 V KERKO0603 885 012 206 091 Würth Elektronik C2, C4, C5, C6, C12 100n / 50 V KERKO0603 885 012 206 095 Würth Elektronik DNO001, 2015-10-20, JSt Page 2 of 7 DESIGN NOTE Demo Board Power LED´s with Slider Ceramic Power LEDs & LED Driver Module & Wireless Power CIN, COUT 2u2 / 16 V KERKO1210 885 012 209 012 Würth Elektronik H6 LED Blue PLCC2_3535 150 353 BS 745 00 Würth Elektronik H7 LED Green PLCC2_3535 150 353 GS 745 00 Würth Elektronik H9 LED Red PLCC2_3535 150 353 RS 745 00 Würth Elektronik H8 LED Yellow PLCC2_3535 150 353 YS 745 00 Würth Elektronik C1, C20, C22 4u7 / 16 V KERKO0603 885 012 207 053 Würth Elektronik IC1 8Bit MCU MLF-32 ATMega88A-MU Atmel D1 Integrated WPC Receiver IC DSBGA BQ51013BRHL Texas Instruments IC3 Voltage Regulator SOP08 LP2951D Texas Instruments LP1, LP2, LP3, LP4, LP5 do not place PAD-R RIADJ 0R R-EU_R0603 R5, R6, R15 100k R0603-SMD R1, R2, R3, R4, R7, R8, R9, R10, R12, R13 10k R0603-SMD R11 180R R0603-SMD R14 300R R0603-SMD RVREF do not place R-EU_R0603 S18, S19 do not place QTOUCH_ SESLIDER8_ENDE S11, S12, S13, S14, S15, S16 do not place QTOUCH_ SSLIDER8_MITTE TP1 do not place TESTTP08DK V3 BC847B NPNSOT23 V2 BSS138 N-FETSOT23 V1 IRLML6402PBF P-FETSOT23 X1, X2 Pad for battery connection PADRUND_8 X3, X4 do not place PADSTANDARD X5 do not place ST-6POL _2 Battery holder 4xAAA DNO001, 2015-10-20, JSt Page 3 of 7 DESIGN NOTE Demo Board Power LED´s with Slider Ceramic Power LEDs & LED Driver Module & Wireless Power 5. Schematics _________________________________________________ Figure 2: Schematic of the LEDs and LED driver DNO001, 2015-10-20, JSt Page 4 of 7 DESIGN NOTE Demo Board Power LED´s with Slider Ceramic Power LEDs & LED Driver Module & Wireless Power Figure 3: Schematic of the Wireless Power Unit Figure 4: Schematic of the Voltage Regulation Unit DNO001, 2015-10-20, JSt Page 5 of 7 DESIGN NOTE Demo Board Power LED´s with Slider Ceramic Power LEDs & LED Driver Module & Wireless Power Figure 5: MCU Unit DNO001, 2015-10-20, JSt Page 6 of 7 DESIGN NOTE Demo Board Power LED´s with Slider Ceramic Power LEDs & LED Driver Module & Wireless Power IMPORTANT NOTICE The Application Note is based on our knowledge and experience of typical requirements concerning these areas. It serves as general guidance and should not be construed as a commitment for the suitability for customer applications by Würth Elektronik eiSos GmbH & Co. KG. 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