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PDF IP3101 Data sheet ( Hoja de datos )
| Número de pieza | IP3101 | |
| Descripción | Versatile Gate Driver | |
| Fabricantes | Interpion | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de IP3101 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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IP3101
Versatile Gate Driver
DESCRIPTIONS
The IP3101 provides simple and high performance
control functions for the half bridge L/C resonant sys-
8DIP
tem, specially electronic ballast . It internally inte-
grated the essential functions of the half bridge L/C
resonant system so the conventional system can be
realized a minimum board area, small external com-
ponents and low power dissipation.
8SOP
Internally integrated soft-start circuit eliminated the
need for external soft-start circuit. And the initial pre- FEATURES
heating switching frequency and preheating time can
be easily programmable with only one capacitor
- Internal Soft Start
(preheating frequency capacitor) and one resistor
- Programmable Soft Start Frequency
(preheating time capacitor) depending on the types of - Programmable Preheating Time
lamps. Also the normal operating frequency can be - Very Precision Internal Operating Frequency(+5%)
easily adjusted by timing resistor (Rt) and timing ca- - No Lamp Protection or Over Current Protection
pacitor (Ct).
- Precision Internal Reference Voltage
The cold cathode current can be limited by changing - 8DIP, 8SOP Packages
the normal operating frequency to soft-start frequency
with an external small signal transistor. No lamp pro-
tection or any required protection like over current
ORDER INFORMATIONS
protection can be realized by adding an external
small signal transistor.
Device
Package Operating Temp
BLOCK DIAGRAM
IP3101
I3101
8DIP
8SOP
-25°C ~ 125°C
PHT 1
CT 2
Vz
Ipht
1.5V
Ichg
Voltage
Pre-Heat
Iss
Reference
(Vz,Vref)
Oscillator
Reference
Output
UVLO
(10V/8V)
UVLO
Vcc
OSCILLATOR
RT 3
Idis
I(RT)
I(PHF)
I(CT)=I(RT)+I(PHF)
I(CT)
OSC, PHT,
HO,LO
Iss Delay Timer
OUTPUT
LOGIC
Shutdown
Vcc
PHF 4
1.0V
Protection
Comparator
8 VCC
7 HO
6 LO
5 GND
September. 2003
http://www.interpionsemi.com
-1-
1 page  
IP3101
Versatile Gate Driver
APPLICATION INFORMATIONS
1. Calculation for VPHT
The VPHT is voltage of pin 1. The preheating time is decided by this voltage.
V PHT
44000
= R PHF
+ 0 .05
Where,
RPHF is the value of resistor which is connected to pin 4.
2. Calculation for TPH
The TPH is preheating time, from preheating frequency to normal operating frequency. When the
voltage of pin 1 reach to the VPHT, the preheating will be completed.
TPH
=
CPHT
0.9×10-6
´VPHT
Where,
CPHT is the value of capacitor which is connected to pin 1.
3. Calculation for fSW
The fSW is normal operating frequency.
f SW
@
1
2.2× RTCT
Where,
CT & RT are the value of capacitor & resistor which are connected to pin 2 & pin 3.
4. Calculation for fPRH
The fPRH is preheating frequency.
f PRH
@
R T + R PHF
2 .5 × RT C T R PHF
September. 2003
http://www.interpionsemi.com
-5-
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet IP3101.PDF ] | |
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