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PDF HV9906DB4 Data sheet ( Hoja de datos )
| Número de pieza | HV9906DB4 | |
| Descripción | Off-Line Current Source Controller | |
| Fabricantes | Supertex Inc | |
| Logotipo |  |
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Off-Line Current Source Controller
HV9906DB4
Introduction
The HV9906DB4 provides a constant current of
750mA. It contains all circuitry necessary to
demonstrate the features of the HV9906 second
order power supply controller. A power converter of
the demo board consists of an input buck-boost stage
and an output buck stage. The output voltage polarity
is negative. Due to its unique quadratic input-to-
output DC voltage transfer ratio, the converter can
operate directly off AC line to produce low-voltage
output without need for electrolytic capacitors. The
HV9906 is designed for optimally controlling this type
of power converter or other types of two-stage multi-
converters.
The board is optimized for driving a 10V-20V, 750mA
load. However, it may be modified to meet custom
requirements (up to 80V or 1.5A).
HV9906DB4 demo board features passive power
factor correction to PF>0.95, open circuit protection
and under voltage lockout.
Specification
Input Voltage
80 to 135VAC, 60Hz
Output Current
750mA ±10%
Output Voltage
20V Max
Efficiency
64% at Io=750mA, Vin=100VAC
Board Layout and Connections
TOP SIDE
BOTTOM SIDE
80-135 VAC
Radj (external)
80-135 VAC
Radj (external)
WARNING!!!
Do not connect to scope ground or to the ground of other earth-grounded instruments. Doing so will short the AC line,
resulting in damage to the circuit and/or instruments. Either use an isolation transformer on the AC line, use a
differential probe, or use a floating, battery-powered instrument to make measurements.
WARNING!!!
No galvanic isolation. Dangerous voltages are present when connected to the AC mains.
1 07/23/2002
Supertex, Inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 FAX: (408) 222-4895 www.supertex.com
1 page | ||
| Páginas | Total 3 Páginas | |
| PDF Descargar | [ Datasheet HV9906DB4.PDF ] | |
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