HV9967BDB1 Supertex, HV9967BDB1 Datasheet

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HV9967BDB1

Manufacturer Part Number
HV9967BDB1
Description
LED Lighting Development Tools 4W LED DRIVER DEMO BOARD
Manufacturer
Supertex
Datasheet

Specifications of HV9967BDB1

Product
Demonstration Boards
Core
HV9967B
Operating Supply Voltage
20 VDC to 60 VDC
For Use With
HV9967B
General Description
The HV9967BDB1 demoboard is a high-brightness LED
driver designed to drive 4 LEDs in series at currents up to
350mA from a 20 - 60V DC input. The demoboard uses the
Supertex’s HV9967B in a buck configuration in a constant
off-time mode.
The HV9967BDB1 LED driver features tight regulation of the
LED current within a few milliamps over the entire range of
the input voltage (i.e. 20 - 60VDC). The LED current accuracy
is almost insensitive to the passive component tolerances,
such as the output filter inductance or the timing resistor.
PWM dimming can be achieved by applying a pulse-width-
modulated square wave signal between the PWMD and
GND pins.
Connection Diagram
Connections
Supertex inc.
1. Connect the LED string between LED+ (Anode of
2. Connect the PWMD terminal to the VDD terminal
LED string) and LED- (Cathode of LED string).
to enable the LED driver if PWM dimming is not re-
quired.
with Accurate Average-Mode Constant Current Control
Supertex inc.
V
4W LED Driver Demoboard
IN
1235 Bordeaux Drive, Sunnyvale, CA 94089
(+) V
IN
(-)
VDD PWMD GND
Specifications
Parameter
Input voltage
Output voltage
Output current
Output current ripple
Switching frequency
Full load efficiency
Output short circuit protection
3. Connect the input DC voltage between the VIN+
and VIN- terminals.
Tel: 408-222-8888
V
V
LED
LED
www.supertex.com
(+)
(-)
HV9967BDB1
(Typical, depending on
Included, hiccup mode
10 -15VDC (4 x LEDs)
Variable with constant
Typical 80% minimum
T
the type of LED)
OFF
Specification
350mA ± 5%
= 5µs ± 20%
20 - 60 VDC
20% pk-pk

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HV9967BDB1 Summary of contents

Page 1

... DC input. The demoboard uses the Supertex’s HV9967B in a buck configuration in a constant off-time mode. The HV9967BDB1 LED driver features tight regulation of the LED current within a few milliamps over the entire range of the input voltage (i. 60VDC). The LED current accuracy is almost insensitive to the passive component tolerances, such as the output filter inductance or the timing resistor ...

Page 2

... AGND PGND 3 = 12V) O 90% 88% 86% 84% 82% 80 =12V) O 6.0 5.0 4.0 3 1235 Bordeaux Drive, Sunnyvale, CA 94089 2 HV9967BDB1 C2 D1 4.7µF B1100 25V L1 1 330µH 2 TP1 R1 0R68 1/4W TP2 Efficiency vs. Input Voltage (@ Input Voltage (V) OFF-Time vs. Input Voltage (@ Input Voltage (V) Tel: 408-222-8888 www ...

Page 3

... Fig.1-4 shows the waveforms during normal operation at loading LED in series at different input. Fig.1: 20V Input Fig.3: 40V Input Supertex inc. Ch1 (Blue) : Drain-Source Voltage (10V/div) Ch4 (Green) : Output LED Current (50mA/div) Time Scale : 4µs/div 1235 Bordeaux Drive, Sunnyvale, CA 94089 3 HV9967BDB1 Fig.2: 30V Input Fig.4: 60V Input Tel: 408-222-8888 www.supertex.com ...

Page 4

... Drain-Source Voltage (2V/div) Ch4 (Green) : Output LED Current (50mA/div) Time Scale : 2ms/div Fig.7: PWM Dimming at 24V – Fall Time Ch1 (Blue) : Drain-Source Voltage (2V/div) Ch4 (Green) : Output LED Current (50mA/div) Time Scale : 2µs/div 1235 Bordeaux Drive, Sunnyvale, CA 94089 4 HV9967BDB1 Tel: 408-222-8888 www.supertex.com ...

Page 5

... Thru-hole vertical header SMT SMD 1206 SMD 0805 SMD 0805 MSOP-8 does not assume responsibility for use of devices described, and limits its liability Supertex inc. 5 HV9967BDB1 Manufacturer’s Manufacturer Part Number Murata GRM21BR71C105KA88L Murata GRM31CR71E475KA88L Murata GRM32CR72A105KA88L Panasonic EEVFK2A470Q ...

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