High Voltage Half Bridge Control ICs for Triac - International Rectifier
High Voltage Half Bridge Control ICs for Triac - International Rectifier
High Voltage Half Bridge Control ICs for Triac - International Rectifier
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THE POWER MANAGEMENT LEADER<br />
Features:<br />
• Dimming LED driver control plus half bridge driver<br />
• Closed-loop LED current dimming control<br />
• Dimming is possible by standard (triac) dimmer<br />
• 600V IRS2543D <strong>Half</strong>-<strong>Bridge</strong> Driver IC<br />
• Latching Open and Short Circuit Protection<br />
• Internal bootstrap MOSFET<br />
• Micropower startup (250uA)<br />
• Latch immunity and ESD protection<br />
LED driver system features:<br />
• Single chip dimming solution<br />
• Simple LED current dimming control method<br />
• Single LED current sensing resistor required<br />
• Integrated protection circuitry<br />
• Simple cost effective solution<br />
• Low component count<br />
Line<br />
EMI Filter<br />
Input<br />
<strong>Rectifier</strong><br />
Dimmer Phase Detect<br />
IRS2543D <strong>Control</strong><br />
<strong>Half</strong>-<strong>Bridge</strong> Driver<br />
Dimming<br />
Feedback<br />
Output Stage<br />
LIGHTING<br />
<strong>High</strong> <strong>Voltage</strong> <strong>Half</strong> <strong>Bridge</strong> <strong>Control</strong><br />
<strong>ICs</strong> <strong>for</strong> <strong>Triac</strong> Dimmable LED Driver<br />
Output<br />
<strong>Rectifier</strong> LEDs<br />
The IRS2543D is a high voltage, high frequency half bridge driver control IC <strong>for</strong> dimmable<br />
AC-DC off line LED drivers. This IC utilizes <strong>International</strong> <strong>Rectifier</strong>’s patented control and high<br />
voltage technologies to realize a simple, high-per<strong>for</strong>mance dimming LED driver solution. This<br />
solution is based on a resonant half bridge topology where the high frequency AC output<br />
current is controlled by adjusting the oscillator frequency. This output current is rectified to<br />
provide DC driver current <strong>for</strong> the LED load. A single high-voltage pin senses the half-bridge<br />
current and voltage to provide protection functions. The DC dim input voltage reference and<br />
the AC LED current have been coupled together allowing a single pin to be used <strong>for</strong> dimming<br />
control. Combining these high-voltage control techniques together with a simple dimming<br />
method in a single 8-pin IC results in a large reduction in component count.<br />
For more in<strong>for</strong>mation in North America call +1 310 252 7105, in Europe call +49 6102 884 311, or visit us at www.irf.com 10808FS
<strong>High</strong> <strong>Voltage</strong> <strong>Half</strong> <strong>Bridge</strong> <strong>Control</strong> <strong>ICs</strong> <strong>for</strong> <strong>Triac</strong> Dimmable LED Driver<br />
Part Number Packages Specifications<br />
IRS2543DPbF DIP8 • 600V half-bridge driver IC<br />
• Closed-loop LED current dimming control<br />
IRS2543DSPbF SO-8 Narrow<br />
• Latching open and short-circuit protection<br />
• Internal bootstrap MOSFET<br />
• Micropower startup (250µA)<br />
IRS2543DSTRPbF SO-8 Narrow<br />
• Latch immunity and ESD protection<br />
120V AC / 60Hz<br />
<strong>Triac</strong><br />
Input<br />
L<br />
N<br />
R1<br />
RN<br />
C1<br />
R2<br />
Functional Diagram<br />
VREF<br />
VREF<br />
VRCS<br />
t<br />
R3<br />
L1<br />
C2<br />
C3<br />
D5 D6<br />
VREF<br />
R4<br />
C6<br />
D1<br />
D3<br />
R1<br />
D4<br />
D2<br />
VCC<br />
1<br />
R7<br />
R5<br />
R6<br />
COM<br />
2<br />
DIM<br />
3<br />
VCO<br />
4<br />
CDIM<br />
CFB<br />
VREF 100%<br />
C4<br />
CBUS<br />
IRS2543D<br />
RFB<br />
VB<br />
8<br />
HO<br />
7<br />
VS<br />
6<br />
LO<br />
5<br />
RLIM1<br />
CVCC<br />
CDIM<br />
CVCO<br />
VREF 10%<br />
R VCC1<br />
R VCC2<br />
VCC<br />
1<br />
COM<br />
2<br />
DIM<br />
3<br />
VCO<br />
4<br />
CFB<br />
Unrectified AC<br />
Output Current<br />
RCS<br />
VRCS<br />
t<br />
IC1<br />
IRS2543D<br />
RFB<br />
8<br />
7<br />
6<br />
5<br />
VB<br />
HO<br />
VS<br />
LO<br />
C5<br />
t<br />
RHO<br />
CBS<br />
RLO<br />
RLMP1<br />
MHS<br />
MLS<br />
DCF1 DCF2<br />
CVS<br />
DCP2<br />
DCP1<br />
RLOAD<br />
LRES<br />
DOUT4<br />
CRES<br />
RCS<br />
DOUT1<br />
A1<br />
DOUT3 DOUT2<br />
For more in<strong>for</strong>mation in North America call +1 310 252 7105, in Europe call +49 6102 884 311, or visit us at www.irf.com 10808FS<br />
A2
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