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EV0108
Functional Description |
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a)
The EV0108 adopts a CMOS power driver integrated circuit,
shelf-oscillation with both high and low side output channels
rectangle pulse generator, clock generator and dead time
control circuit, power driver output circuit and so on.
b) The internal micro power dissipation clock generator,
the oscillation cycle and bias of IC can be adjusted by
external connection resistors and capacities, the ancillary
circuit can meet the demand of different kinds of fluorescent
lamps’ function.
c) Preheat function can control filament preheat time before
startup. Preheat time can be adjusted by the external connection
resistor and capacitor of PIN 12.
d) Protected function: By adjusting voltage and current
of circuit to keep IC under 2V and IC stop surging to protect
circuit.
e) Dead time can be adjusted by the external connection
resistor between PIN11 and PIN13, adjustable dead time between
0.8us to 4us. If short circuit, dead time is 0.8us;
f) High and low side signal of the circuit adopts differential
signal with both channels, coupling with 56p/500v capacity.
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SG6808 Power
Correction
LSI
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SG6808 is a simple but efficient power factor correction circuit，this
circuit built-in R / C Filter.and bring current induction circuit,so
no need for an external R / C Filter,it also has a special anti-strike
circuit. This applies to electronic ballast circuit and small
size requirements, low power, with a less external device high-density
power, output drivers clamp circuit can also limit the power
MOSFET Driver threshold, this circuit greatly improved the reliability
of the system.
Main features:
1 Built-in start timer
2 Internal R / C Filter
3 Precise adjustment of the over-voltage protection
4 Zero-current detector
5 A multiplier
6 May correction of 15% internal bandgap reference
7 Less voltage lock lag when there are 3V
8 High clamp output polarity
9 Low Starting current and operating current
10 An 8 pin DIP or SOP Packaging
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