Microchip HV9930DB1 Bruksanvisning
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Supertex inc.
Supertex inc.
www.supertex.com
HV9930DB1
Doc.# DSDB-HV9930DB1
A032913
General Description
The HV9930DB1 is an LED driver demoboard capable of
driving up to 7 1-watt LEDs in series from an automotive
input of 9 - 16VDC. The demoboard uses Supertex’s
HV9930 in a boost-buck topology. The converter operates
at frequencies in excess of 300kHz and has excellent
output current regulation over the input voltage range. It
can also withstand transients up to 42V and operate down
to 6V input. The converter is also protected against open
LED and output short circuit conditions. Protection against
reverse polarity up to 20V is also included.
Board Layout and Connection Diagram
High Bright LED Driver IC Demoboard
Meeting Automotive Requirements
Specications
Parameter Value
Input voltage (steady state):9.0VDC - 16VDC
Input voltage (transient):42VDC
Output LED string voltage:28V max
Output current:350mA +/-5%
Output current ripple:5% typical
Switching frequency:
300kHz (9.0V input)
430kHz (13.5V input)
500kHz (16.0V input)
Efciency: 80% (at 13.5V input)
Open LED protection:Included; clamps output
voltage at 33V
Output short circuit protection:Included; limits current at
350mA
Reverse polarity protection:-20V max
Input current limit:1.9A
PWM dimming frequency:Up to 1.0kHz
Conducted EMI:Meets SAE J1113
conducted EMI standards
Connections:
Input - The input is connected between the terminals of
connector J1 as shown in the Connection Diagram.
Output - The output is connected between the terminals of
connector J2 as shown.
Enable/PWM Dimming:
To just enable the board, short pins 1 and 2 of connector J3
as shown. For PWM dimming, connect the external push-pull
square wave source between terminals 1 and 3 of connector
J3 as shown by the dotted lines.
Note:
During PWM dimming, pin 2 of connector J3 should be left
open. Also, the PWM signal must have the proper polarity
with the positive connected to pin 1 of J3. Note that pin 3
of J3 is internally connected to the return path of the input
voltage.
Actual Size: 2.25” x 1.25”
+
PWM
Dimming
Enable
+
_
+
_
V
IN
+
-
Produktspecifikationer
| Varumärke: | Microchip |
| Kategori: | Inte kategoriserad |
| Modell: | HV9930DB1 |
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