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EV0108
Lighting Integrated Drive
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The EV0108 adopts a
programmable CMOS, is used in electronic ballast (energy conservation
lamp) circuits specially and available in the ballast (energy
conservation lamp) of different power. The EV0108 features
include original design principle, low cost price, use simply,
high reliability, stable operating frequency and so on.
Features
1) Wide current and voltage range in one IC (10V-17.5V,
instantaneous output current 500 mA;
2) Available varieties of energy conservation lamp and electronic
ballast;
3) Adjustable dead time between 0.8us to 4us;
4) Internal oscillator, adjustable operating functional
by ambient circuit;
5) Adjustable preheat time;
6) Available redirection protection;
7) Self-isolation, high and low side pulse driver output
with both channels;
8) Few ambient components, use simply (Diagram 4 Diagram
5);
9)Micro-power dissipation;
10) DIP16 SOP16 package;
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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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