RVDB-PCB-KT

RayVio LED Driver July 17, 2017 Proprietary and confidential Safety Guidelines Eye and Skin Safety Guidelines 1. Use appropriate eye and skin protection when operating UV-C LEDs. 2. Do not directly look at the LED when it is powered on. 3. To avoid the risk of eye damage use caution when examining UV-C LEDs with optical instruments. Proprietary and confidential 2 RayVio LED Driver - Description • Power supply – Driver IC TPS61165 • Battery – The driver IC boosts input voltage up to LED operating voltage » Example: Li-Po battery – 3.7V, 300 mAh • Micro USB – Used to charge the battery from phone charger, computer and etc. – The driver can also operate without battery when USB is connected • External power supply – Battery connector can be used to connect an external power supply » Example, 30W Universal AC/DC Adapter with 3V to 12V Selectable Output – Make sure Vin is equal to or less than Vout » » Vin: min. 3V – max. 18 V Vout: min. Vin – max. 38 V • Output current is user controllable • Presets: 50 mA, 150 mA or 200 mA • Plus a user configurable option by selecting appropriate resistor value – Output Current = 200 mV/resistor value » i.e. use a 2.49 ohm resistor for R5 to obtain 80 mA output current. • LED On/Off control • Presets: on-board On/Off push button or • A user supplied external control signal Proprietary and confidential 3 LED Driver Schematic Proprietary and confidential 4 LED Driver Layout • • • 30 mm x 30 mm board size Two-layer PCB board Four 3 mm diameter mounting holes on the corners Proprietary and confidential 5 LED Driver BOM RayVio Corp. Project Date RayVio LED Driver revD 5/2/2017 Part C1 C2 C3 C4 C5 D1 J1 J2 J3 J4 J5 J6 J7 L1 LED1 LED2 R1 R2 R3 R4 R5 R7 R8 R9 SW1 U1 U2 Value 4.7uF 1uF 220nF 4.7uF 4.7uF 60V Device CAP0603 CAP0603 CAP0603 CAP0603 CAP0603 Diode Schottky ED2740-ND 455-2247-ND M04X2 M03PTH M02PTH USB_MICROB_PLUGRA-LI M02PTH 15uH INDUCTORCR54 Red LEDCHIP-LED0805 Green LEDCHIP-LED0805 100k RESISTOR0805-RES 4.02, 1% RESISTOR0805-RES 1.33, 1% RESISTOR0805-RES 1.0, 1% RESISTOR0805-RES DNP RESISTOR0805-RES 470 RESISTOR0805-RES 2k RESISTOR0805-RES 240 RESISTOR0805-RES PUSHBUTTON-D PUSHBUTTON-DPST TPS61165SOTTPS61165DBVR MCP73831 MCP73831T-2ACI/OT Proprietary and confidential Package 0603 0603 0603 0603 0603 SMA BULK BULK 2X4 1X03 1X02 USB-MICROB-RA 1X02 CR54 0805 0805 0805 0805 0805 0805 0805 0805 0805 0805 BULK SOT23-6 SOT23-5 Digikey Part # 445-9042-1-ND 445-11263-1-ND 445-7408-1-ND 445-9042-1-ND 445-9042-1-ND RB060M-60TR-ND ED2740-ND 455-2247-ND 952-2123-ND 952-2264-ND 952-2262-ND 609-4618-2-ND 952-2262-ND 587-2366-2-ND HT17-2102SURC HQ17-2102SYGC 311-100KCRTR-ND 541-4.02CCCT-ND 541-1.33CCCT-ND 541-1.00CCTR-ND Description CAP CER 4.7UF 35V X5R 0603 CAP CER 1UF 50V JB 0603 CAP CER 0.22UF 50V X7R 0603 CAP CER 4.7UF 35V X5R 0603 CAP CER 4.7UF 35V X5R 0603 Diode Schottky 60V 2A Surface Mount PMDU 2 Position Wire to Board Terminal Block Horizontal with Board 0.138" (3.50mm) Through Hole 2 Positions Header, Shrouded Connector 0.098" (2.50mm) Through Hole Tin 8 Positions Header, Unshrouded, Breakaway Connector 0.100" (2.54mm) Through Hole Tin 3 Positions Header, Unshrouded, Breakaway Connector 0.100" (2.54mm) Through Hole Tin 2 Positions Header, Unshrouded, Breakaway Connector 0.100" (2.54mm) Through Hole Tin CONN USB MICRO B RECPT SMT R/A 2 Positions Header, Unshrouded, Breakaway Connector 0.100" (2.54mm) Through Hole Tin 15µH Shielded Wirewound Inductor 1.8A 104 mOhm Max Nonstandard Red 638nm LED Indication - Discrete 1.8V 0805 (2012 Metric) Green 569nm LED Indication - Discrete 2.1V 0805 (2012 Metric) RES SMD 100K OHM 1% 1/8W 0805 RES SMD 4.02 OHM 1% 1/8W 0805 RES SMD 1.33 OHM 1% 1/8W 0805 RES SMD 1 OHM 1% 1/8W 0805 Custom Define 311-470ARTR-ND RES SMD 470 OHM 5% 1/8W 0805 311-2.00KCRTR-ND RES SMD 2K OHM 5% 1/10W 0603 311-240ARTR-ND RES SMD 240 OHM 5% 1/8W 0805 CW179-ND Pushbutton Switch DPDT Standard Through Hole 296-27597-2-ND LED Driver IC 1 Output DC DC Regulator Step-Up (Boost) PWM Dimming 1.2A (Switch) SOT-23-6 MCP73831T-2ACI/OTCT-ND Charger IC Lithium-Ion/Polymer SOT-23-5 6 Assembled LED Driver Connector to battery or external power supply • PCB operation with RayVio LEDs is discussed in slide 913 Headers for external On/Off control USB Charging Port Use a jumper cap to select current 50 mA 150 mA 200 mA Custom R5, reserved for custom current UV-C LED Connector Proprietary and confidential On/Off Button Short pins with jumper cap for battery operation 7 How to Use Push Button and External On/Off Control • • Use push button for on/off control (default config.) – Use external on/off control (e.g. control signal from Arduino) – – Use jumper cap to short pin 2 and pin 3 on header labelled “J4”. – Push down the built-on-board on/off button. Use jumper cap to short pin 1 and pin 2 on header labelled “J4”; Connect “J5” to control signal • • J5: pin 1 J4 pin 1 Proprietary and confidential 2 Pin 1 for “+” Pin 2 for “-” or “GND” 2 3 8 User Instruction for Driving Single XE or XP1 LED Proprietary and confidential 9 Single XE or XP1 LED • Note: pin 1 and pin 2 of J7 must be shorted (e.g. with a jumper cap) for battery operation and must be disconnected when using an external power supply in order to protect the charging IC. J7 • Power Supply – Option 1 – Battery • • • • • – Option 2 – Micro USB • • – For example, Li-Po battery – 3.7V, 300 mAh The driver IC boosts 3.7 V input voltage up to LED operating voltage. Use standard micro USB cable to charge the battery from computer or phone charger. During charging, red indicator light is on. Green will be on once battery is fully charged. Note: driver board can only charge a single cell Li-Po battery (3.7 V). Dual cell Li-Po batteries cannot be charged thus should not be used. With no battery, the driver can also operate when the USB is connected. Use proper USB power adapter. For example, common USB charging adapters are rated 5 V, 2 A output. Option 3 – External Power Supply • Connect external power supply to power input port, J2. – • For example, 30W Universal AC/DC Adapter with 3V to 12V Selectable Output. Limit max. supply voltage to 5 V for single XE or XP1 operation. Proprietary and confidential 10 Battery Life Example • An XE LED driven at 80 mA. – Using a fully charged 900 mAh battery. • Data shows the relative LED output over time. – 6 hours of continuous use. Proprietary and confidential 11 User Instruction for Driving a Single XP4 LED (Must Use an External Power Supply) Proprietary and confidential 12 Single XP4 LED (Use External Power Supply) • • Note: pin 1 and pin 2 of J7 must be disconnected for external power supply in order to protect the charging IC. Connect external power supply to power input port, J2. – • For example, 30W Universal AC/DC Adapter with 3V to 12V Selectable Output. Data in the table below is based on driving a single RayVio XP4 LED with an external power supply at room temperature. – Actual measurements may vary as result of component variation (i.e. values of precision resistors) Supply Voltage (V) 9 10 11 12 Proprietary and confidential Preset LED Current Measured LED Current (mA) (mA) 50 50.3 150 143.7 200 192.7 50 50.1 150 138.8 200 192.1 50 50.2 150 135.2 200 185.6 50 50.2 150 133.8 200 180.9 13 Confidential and Proprietary 14