IRPLHALO1E International Rectifier, IRPLHALO1E Datasheet - Page 16

• 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
Layout Issues
It is very important when laying out the PCB for the IR2161 to consider the following points:
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Component Selection
It is important to consider the selection of componets, particularly capacitors. These need to be rated
for at least 100ºC and in the case of the two half bridge capacitors C1 and C2 they must be suffieciently
for the high frequency ripple current at this temperature. As in most electronic power applications,
capacitors and resistors are the components most likely to fail due to stress over time and and high
operating temperatures. Careful selection of these will significantly increase the reliability of the product.
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CVCC2 must be as close to the IC as possible
CSD should be as close to the IC as possible.
C1 and C2 should be placed close to the MOSFETs Q1 and Q2 and close to RCS and the
output transformer primary, so that the primary high frequency current path may be as short
as possible.
CF should be placed close to the IC so that one side can be very close to the current sense
(CS) pin and the other side as close to the IC COM pin as possible.
The traces leading from the transformer secondary to the output need to carry a large
current and so should be made as large as possible.
Large creepage and clearance distances must be left between the primary and secondary
side of the transformer to accommodate the 4kV isolation breakdown requirement.
Sufficient space must be left between traces connected to the low side and the high side
outputs of the IC. Also any traces carrying high voltage from the AC line or the DC bus must
have sufficient spacing from low voltage traces to prevent the possibility of arcing.
Fig. 7 IRPLHALO1E PCB Layout
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