Supertex HV9910DB1 demo board complete high current, high brightness (

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Supertex HV9910DB1 demo board complete high current, high brightness (

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HV9910DB1 Off-Line, High Brightness, Driver Demo Board
Supertex HV9910DB1 demo board complete high current, high brightness (HB) power driver supply string LEDs using HV9910B demo board used test performance HV9910B constant current driver power string multiple strings LEDs. HV9910DB1 supply maximum output current 1.5A drive strings that less from 120V, 60Hz input. efficiency about full load operates typically input power factor. power conversion stage HV9910DB1 consists passive power factor corrector circuit followed currentcontrolled buck converter operating switching frequency 80kHz. nominal output current demo board adjusted value between 350mA 1.5A using on-board trimming potentiometer. dimming achieved applying pulse-width-modulated square wave signal between PWMD pins.
Input Voltage: Load current: string voltage: Switching Frequency: Efficiency: Dimensions: 90VAC 135VAC 1500mA maximum (adjustable down 350mA) maximum 50kHz (typ.) 100.5mm 57.5mm
Board Layout Connections
90-135Vac 60Hz
Enable Connection Dimming (optional)
HV9910DB1
Instructions
Input: Connect these pins standard 120V line voltage outlet voltage between 200V). two-wire cable without ground connection. Note: Apply line voltage last step power string, after connect demo board! disconnected string would damage board, however advisable. ATTENTION: demo board connected LEDs isolated from line voltage. None demo board terminals galvanic isolated from line voltage. measuring instruments, scopes meters must isolated from ground (floating) using isolating transformers. OUTPUT: These terminals output terminals converter must connected string. Positive-marked connected positive (anode) terminal string, Negative-marked connected negative (cathode) terminal. Note: Both terminals will have active live voltage when input line applied! VDD: This connected HV9910B. typical voltage 7.6V. This voltage used drive additional circuitry required. Please datasheet regarding output current capability pin. GND: This connected Ground connection buck converter. PWMD: This terminal used either enable/disable converter apply dimming signal. just enable converter, connect PWMD pin. Disconnecting PWMD will cause circuit stop. dimming light achieved turning converter with frequency 50Hz 1000Hz logic level signal. Changing Duty Ratio signal changes effective average current LEDs, changing light emission. Note: case dimming, PWMD should connected pin. Also, signal generator device applying signal PWMD must isolated from input mains. connected negative output. Connect input input terminals (there polarity considered). Short PWMD VDD. Apply 120VAC input terminals string should start glow. ammeter connected series with LEDs measure output current. current level then changed adjusting trimming potentiometer. Note: Make sure string fully functional. current limited source test string. 40V/300mA power supply should good solution. Open Test After initial test functionality, demo board tested open string. test non-destructive time restricted. Disconnect LEDs power demo. There will light emission current withdrawn from line will very low. There switching switching node. Linear Dimming Test Gradual change current LEDs possible using trimming potentiometer placed demo board. HV9910B preset voltage reference level 250mV when voltage above 250mV. external resistor divider consisting potentiometer change that level pulling down below 250mV, reducing string current linear fashion. maximum output current HV9910DB1 1.5A. reduced using changed removing current sense resistors Dimming Test During normal demo board operation, applying level signal PWMD, output current through LEDs changed fashion 100% range. this dimming mode, output current normally levels zero nominal current, except very duty ratios where inductor current cannot ramp nominal value within short time.
Testing HV9910DB1 Connect string output terminals. Check polarity connection, anode string should connected positive output, cathode should
HV9910DB1
Schematic Diagram
100uF, 160V FR1G-13 INPUT 125V NTC1
1uF, 250V
BYV26B Conn_2pin 1000uH,
FR1G-13
178K 0.1uF,
GATE
464K
0.1uF, 250V
HV9910B
IRF840 (D2PAK)
0.1uF, 250V
2.2uF,
PWMD
FR1G-13
100uF, 160V
0.27 0.27
Bill Materials
J11, INPUT C12, D19, D20, NTC1 VDD, PWMD, Description Terminal block 100µF, 160V electrolytic capacitor 2.2µF, 0805 ceramic capacitor 0.1µF, 0805 ceramic capacitor 1µF, 250V metallized polypropylene capacitor 0.1µF, 250V metallized polyester capacitors 400V, 1.5A fast soft recovery diode 400V, fast recovery diode Slow 125V, fuse profile common mode choke Cross reference 1000µH, inductor Cross reference inrush current limiter 500V, D2PAK MOSFET 464K, 1/8W 0805 resistor 178K, 1/8W 0805 resistor 1/10W 0805 resistor 0.27, 1/4W 1210 resistor adjust trim Universal driver 400V, DF-S, single phase diode bridge D2PAK heat sink 3-position breakaway header Manufacturer Onshore Tech. Panasonic Panasonic Panasonic Panasonic Panasonic Philips Diodes, Inc. Littelfuse Coilcraft Cooper Electronics Coilcraft Cooper Electronics Thermometrics International Rectifier Panasonic Panasonic Panasonic Panasonic components Supertex Diodes, Inc. Aavid Thermalloy Molex/Waldom Manufacturer's Part Number ED555/2DS EEU-EB2C101 ECJ-2FB1C225K ECJ-2VF1E104Z ECW-F2105JB ECQ-U2A104MV BYV26B FR1G-13 0460002.UR BU9-2820R5B CTX01-17785-R PCV-2-105-02 CTX01-17784G-R CL-130 IRF840AS ERJ-6ENF4643V ERJ-6ENF1783V ERJ-6ENF1001V ERJ-14RQJR27U CT-94W-502 HV9910BNG-G DF04S 573100d00000 22-28-4030
HV9910DB1
Layer
Bottom Layer
040108

Supertex HV9910DB1 demo board complete high current, high brightness (

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