IR3500VMPBF International Rectifier, IR3500VMPBF Datasheet - Page 31

• Manufacturer Part Number: IR3500VMPBF
• Description: The IR3500V Control IC combined with one or more xPhase3 Phase IC implement the control and MOSFET driver functions for a VR11.1 CPU VTT power supply.
• Manufacturer: International Rectifier

Specifications of IR3500VMPBF

• Package: 32-Lead MLPQ
• Circuit: X-Phase Control IC
• Switch Freq (khz): 250kHz to 1.5MHz
• Pbf: PbF Option Available

PCB METAL AND COMPONENT PLACEMENT
• Lead land width should be equal to nominal part lead width. The minimum lead to lead spacing should be ≥
• Lead land length should be equal to maximum part lead length + 0.3 mm outboard extension + 0.05mm inboard
• Center pad land length and width should be equal to maximum part pad length and width. However, the minimum
• Four 0.3mm diameter vias shall be placed in the pad land spaced at 1.2mm, and connected to ground to minimize
• No PCB traces should be routed nor vias placed under any of the 4 corners of the IC package. Doing so can cause
0.2mm to minimize shorting.
extension. The outboard extension ensures a large and inspectable toe fillet, and the inboard extension will
accommodate any part misalignment and ensure a fillet.
metal to metal spacing should be ≥ 0.17mm for 2 oz. Copper ( ≥ 0.1mm for 1 oz. Copper and ≥ 0.23mm for 3 oz.
Copper)
the noise effect on the IC and to transfer heat to the PCB.
the IC to rise up from the PCB resulting in poor solder joints to the IC leads.
Page 31 of 34
July 28, 2008
IR3500V