HV9910BDB7 Microchip

Supertex inc. HV9910BDB7 HV9910B PFC 40W LED Driver Demoboard General Description Specifications The Supertex HV9910BDB7 demonstrates the use of an Parameter Value HV9910B control IC in an off-line, High Brightness LED driver Input voltage 190~265VAC, 50Hz application. The board incorporates power factor correction (PFC) and satisfies the limits for harmonic currents according Power factor 0.95 to the EN61000-3-2 Class C standard having total harmonic <20% Total harmonic distortion distortion (THD) less than 20%. The board features a low EN 61000-3-2 Class C component count and long life operation due to the absence EMI limits CISPR 15 of electrolytic capacitors. The board is designed to supply a Output voltage 65~105V string of LEDs with a current of 350mA and a voltage in the 65 to 105V range from a 220/230VAC line. Output current 350mA10% Output power 40W The conversion stage draws line current throughout the AC Efficiency 90% line cycle, partly using a charge pumping and partly using a Load regulation <3% boost conversion technique to charge the bulk energy storage capacitors. The LED current is provided with a continuous AC Line regulation <1.5% mode buck stage giving a DC current with about 30% peak-to- Output ripple <30% peak-peak peak ripple. A patent for this conversion technique is pending. Life time Non-Electrolytic Please inquire with the Supertex applications department for design guidance, should change of input line voltage, output Output short circuit No protection voltage, or output current be desired. Output open circuit Yes An effort was made to satisfy the requirements of CISPR protection 15 (EN55015), limits and methods of measurement of radio 3.0 x 2.3 x 1.1 Dimensions disturbance characteristics of electrical lighting and similar (76mm x 58mm x 28mm) equipment. The connection diagram details the hookup of the board to the AC line. Note that the load is NOT galvanically isolated, and that measurements to the board require measurement techniques in common use with non-isolated off-line power supplies (isolation transformers, differential probes, etc). Board Layout Top View Bottom View Actual Size: 3.0 x 2.3 x 1.1 Doc. DSDB-HV9910BDB7 Supertex inc. A032813 www.supertex.comHV9910BDB7 Connection Diagram 105VDC 220VAC 350mADC Connections Input Voltage - Connect the AC line input voltage to AC LED String - Connect the LED strings between LED+ and VIN as shown. LED- as shown (anode of the string to LED+ and cathode to LED-). Schematic Diagram L2 D3 105VDC D9 D4 CL 560H STTH1L06A STTH1L06A S1J 350mADC CL-140 190 265V RMS J1 J2 C10 HDR 1 HDR 220nF BR1 D2 F1 L3 DF04S C1 C2 STTH1L06A C20 R20 AC D1 1A F 4.7mH POS 2.2F 2.2F 3 4 100pF 2.2k STTH1R06A C11 C12 C3 C5 2 100nF 100nF 10nF 470nF NEG AC CT1 L1 121:1 IC1 10mH 1 HV9910BNG-G R12A 3 4 499k VIN 4 M1 GATE SPP04N50C3 R12B R4 R16 R1 HV9910B 1.0k 499k 620m 464k 2 8 CS ROsc GND R11A PWM VDD LD R6 C7 10k 620m 100pF 3 5 6 7 C8 10F Doc. DSDB-HV9910BDB7 Supertex inc. A032813 2 www.supertex.com