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PDF HV9904X Data sheet ( Hoja de datos )
| Número de pieza | HV9904X | |
| Descripción | HV9904 Multi Converter Controller | |
| Fabricantes | Supertex Inc | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de HV9904X (archivo pdf) en la parte inferior de esta página. Total 5 Páginas | ||
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HV9904
Preliminary Engineering Specification
HV9904 Multi Converter Controller
Features
General Description
Eliminates High Voltage Input Electrolytic Capacitor
Smallest and Most Reliable Off-Line Solution
Constant Current or Constant Voltage Mode Control
Can be Operated Directly from Rectified AC Mains
10V to 400V Input Range Internal Regulator
1.5mA Operating Supply Current
PLL Based Loop Control with Soft Start
On-Time Varies Inversely with Input Voltage
Frequency Varies with Load
2.5V Differential Sense
Recommended for <10W Applications
Applications
Universal Input Voltage LED driver
Constant Current Source
Battery Charger
Ordering Information
Package Options
8 Pin Plastic DIP
8 Pin SOIC
HV9904P
HV9904LG
Dice
HV9904X
The Supertex HV9904 is a second order PWM controller designed
to provide a constant average current output or a constant average
voltage output from an input of 10V to 400V DC or directly from
rectified AC mains up to 280V. The second order topology is
capable of extremely high dynamic control range, allowing
operation directly from rectified AC mains without the need for
bulky and expensive high voltage input electrolytic capacitor.
The PWM control utilizes feed forward circuitry to compensate for
large variations in input voltage (i.e. rectified AC) and a novel
integrator lock loop PLL scheme to regulate a differentially sensed
feedback node where the signal may be discontinuous. This
feedback node could be a current sense resistor or divider from
regulated output voltage. For a constant load the switching
frequency will be nearly constant with a dither of a few kHz helping
to meet FCC conducted emissions requirements.
A high input voltage linear regulator provides a stable Vdd supply
for the internal circuitry and gate drive to the external MOSFET.
Under voltage lockout provides a power on reset and protection for
the MOSFET
Typical Application Circuit
Universal Input Constant Average Currrent LED Lamp Power Supply
10VDC to 400VDC
or
VAC to 265V
1N4007
D1 D2
D5 D6
MURS120T3 MURS120T3
L2
220uH
D4 D3
C3
0.01uF
D7
MURS120T3
C1
0.1uF
400V
L1
1mH
U1
Vdd +Vin GATE M1
NS
HV9904
C2 PS
1uF AGND PGND
VN2460N8
or
IRFBC30AS
C4
0.1uF
10mA
1 to 8
LEDs
R1
250
Prepare by Telecom Group
1
Rev. D
3/29/2002
Supertex, Inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 FAX: (408) 222-4895 www.supertex.com
1 page  
Application Information - Continued
Non-Isolated Constant Voltage Output PWM
10VDC to 400VDC
or
VAC to 265VAC
Universal Input Power Supply
1N4007
D1 D2
D5 D6
MURS120T3 MURS120T3
L2
220uH
D4 D3
C3
0.01uF
D7
MURS120T3
C1
0.1uF
400V
L1
1mH
U1
Vdd +Vin GATE M1
NS
HV9904
C2 PS
1uF AGND PGND
VN2460N8
or
IRFBC30AS
C4
100uF
HV9904
-5V
R2
25k
R1
25k
This circuit provides a non-isolated constant voltage output. The
value of C4 capacitor controls the peak-to-peak ripple, which
decreases with increasing capacitor value. The following BOM
provides a list of suggested components.
Item Number
1
2
3
4
5
6
7
8
9
10
11
12
Total Part Count
Quantity
1
1
1
1
4
3
1
1
1
1
1
1
17
Reference
C1
C2
C3
C4
D1, D2, D3, D4
D5, D6, D7
L1
L2
M1
R1
R2
U1
Value
0.1µF, 500V
1µF, 15V
0.01µF, 500V
100µF, 6.3V
1N4007
MURS120T3
DO1608C-105
DO1608C-224
VN2460N8
25kΩ
25kΩ
HV9904LG
Manufacturer
Vishay
Vishay
Vishay
Panasonic
On Semiconductor
On Semiconductor
Coilcraft
Coilcraft
Supertex
Supertex
Prepare by Telecom Group
5
Rev. D
3/29/2002
Supertex, Inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 FAX: (408) 222-4895 www.supertex.com
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet HV9904X.PDF ] | |
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