IRPLHALO1E International Rectifier, IRPLHALO1E Datasheet - Page 9

• Manufacturer Part Number: IRPLHALO1E
• Description: KIT HALOGIN CONVERTER 100VA
• Manufacturer: International Rectifier

Specifications of IRPLHALO1E

• Main Purpose: Lighting, Ballast Control
• Utilized Ic / Part: IR2161
• Lead Free Status / RoHS Status: Lead free / RoHS non-compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Other names: *IRPLHALO1E

IRPLHALO1E
Fig. 3 Short circuit and Overload detection
The red trace shows the output current during both types of fault mode and the blue trace shows the
charging and discharging of the CSD capacitor.
The IR2161 can be shut off by applying a voltage above 0.5VCC to the CS pin. This will cause the
system to go directly to fault mode after approximately 1uS such that it is necessary for VCC to be
re-cycled off and on to restart the system.
The IR2161 also includes over temperature shutdown, which latches the convertor off when the die
°
temperature of the IC exceeds 130-140
C. It is assumed that the die temperature will be approxi-
°
mately 20
C above the ambient temperature inside the convertor. It is also true that depending on
layout, heat will be transferred from other devices through
DC Bus
the PCB traces into the IC raising the temperature. It may
Voltage
be possible to utilize this behavior to cause the IC to shut-
down if high temperatures from the MOSFETs are conducted
to the IC.
Calculating RCS
VS
1/2 DC Bus
Voltage
The value of the current sense resistor RCS is critical to
LOAD
VCSpk
achieve correct operation in the IR2161 based Halogen con-
vertor.
VCS
RCS
Fig. 4 Calculation of the peak half bridge current
www.irf.com
9