HV9930DB1 Supertex, HV9930DB1 Datasheet - Page 4

• Manufacturer Part Number: HV9930DB1
• Description: LED Lighting Development Tools HV9930 Demo Board
• Manufacturer: Supertex

Specifications of HV9930DB1

• Product Category: LED Lighting Development Tools
• Product: Demonstration Boards
• Core: HV9930
• Operating Supply Voltage: 9 V to 16 V
• Factory Pack Quantity: 1
• For Use With: 7 - 1 W LEDs

Fig. 7a shows the operation of the converter during an Open
LED condition and Fig. 7b shows the operation during output
short circuit condition. In both cases, it can be seen that the
HV9930DB1 can easily withstand faults and come back into
normal operation almost instantly.
Fig. 7 HV9930DB1 during output fault conditions
Supertex inc.
Channel 1 in (a); Channel 2 in (b)
Channel 4 (green): LED current
FET drain voltage (20V/div)
(a): Open LED Condition
(b): Output Short Circuit
Short Circuit
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1235 Bordeaux Drive, Sunnyvale, CA 94089
4
Fig. 8 shows the PWM dimming performance of the
HV9930DB1 with a 100Hz, 3.3V square wave signal. The
converter can easily operate at PWM dimming duty cycles
from 1% - 99%.
Channel 1 (blue): PWM Dimming Input Signal (2V/div)
Channel 4 (Green): LED current (100mA/div)
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Fig. 8 PWM Dimming at 100Hz
Tel: [phone]
(b)
(c)
(a)
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www.supertex.com
HV9930DB1