HV9910DB2 Datasheet, PDF (1/4 Pages) List of Unclassifed Manufacturers – Off-Line, High Brightness, SED Driver Demo Board

HV9910DB2v2
O b s o l e t e _{General Description}
Off-Line, High Brightness,
LED Driver Demo Board
The Supertex HV9910DB2v2 demo board is a complete high ^{For driving LED strings whose voltage is greater than one-}
R e f e r t o ^{current, high brightness (HB) LED power driver to supply}
a string of LEDs using the HV9910B IC from a universal
AC input voltage. The demo board can be used to test the
performance of HV9910B as a constant current driver to
half of the input voltage, see the HV9910DB3v3 datasheet.
The power conversion stage of HV9910DB2v2 consists of a
power a string or multiple strings of LEDs.
diode bridge rectifier followed by a current-controlled buck
converter operating at a switching frequency of 50kHz. The
HV9910DB2v2 can supply a maximum output current of ^{nominal output current of the demo board can be adjusted}
H V 9 9 1 0 B D B 2 ^{350mAto drive LED strings from a wide input voltage – 90 to}
265VAC, 50/60Hz. This wide input voltage range makes this
demo board usable all over the world.
to any value between 35mA and 350mA using the on-board
trimming potentiometer. PWM dimming can be achieved
by applying a pulse-width-modulated square wave signal
between the PWMD and GND pins.
Actual Dimensions: 74.5mm x 42.5mm
Board Layout and Connections
Specifications
Input voltage:
Load current:
90VAC – 265VAC
350mA maximum
(adjustable down to 50mA)
Output voltage:
Input voltage
LED string voltage
Min (V)
Max (V)
110VAC
10
40
220VAC
20
50
90-265Vac
50/60Hz
PWM Dimming
(optional)
1
Enable
Connection