Microchip HV859DB1 Manual

Microchip Ikke kategoriseret HV859DB1

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Supertex inc.
Supertex inc.
www.supertex.com
HV859DB1
Doc.# DSDB-HV859DB1
A032813
General Description
The Supertex HV859DB1 demoboard contains all the
necessary circuitry needed to demonstrate the features of
the HV859 EL lamp driver.
Simply connect it to a power supply and an EL lamp. For
additional assistance in designing EL driver circuits, please
refer to application notes AN-H33 (the effect of external
components on performance of Supertex EL drivers)
and AN-H43 (EL lamp driver circuits to reduce audible
lamp noise).
Board Layout and Connection Diagram
EL Lamp Driver
Demoboard
Connections:
C
DD
R
EL
R
SW
C
IN
L
X
D
C
S
V
IN
EN
V
DD
GND
V
A
V
B
HV859
EN - Enable Input
Enables/Disables the lamp driver. A logic high (connect
to VDD) enables the driver, and a logic low (connect to
GND), disables the driver. This input can be connected to
a mechanical switch, or to a logic circuit output that has a
source impedance of less than 20kΩ.
VDD - IC Supply
Supplies the HV859 EL driver IC. The supplied circuit is
optimized for 3.0V operation. The operating range can be
from 1.8V to 5.0V. Connect to the positive terminal of a
power supply.
VIN - Inductor Supply
Supplies the high voltage power converter. Connect to the
positive terminal of a power supply.
GND - Circuit Ground
Connect to the VDD and VIN negative terminals. Supply
bypass capacitors for both VDD and VIN are provided on
the demo board. External supply bypass capacitors are not
required.
VA and VB - Lamp Connections
Connect to an EL lamp. Polarity is irrelevant.
Note:
Make sure all the above connections are made before powering up the supply voltages.
Actual Dimensions = 12mm x 12mm
Parameter Value
Input voltage: 1.8 to 5.0V
Typical supply current: 25mA
Lamp size range: up to 5.0in2
Lamp frequency: 204Hz
Converter frequency: 80kHz
Specications

Produkt Specifikationer

Mærke: Microchip
Kategori: Ikke kategoriseret
Model: HV859DB1

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