IR3510MTRPBF International Rectifier, IR3510MTRPBF Datasheet - Page 32

• Manufacturer Part Number: IR3510MTRPBF
• Description: IC XPHASE CONTROL 32-MLPQ
• Manufacturer: International Rectifier
• Series: XPhase™r

Specifications of IR3510MTRPBF

• Applications: Processor
• Mounting Type: Surface Mount
• Package / Case: 32-MLPQ
• Package: 32-Lead MLPQ
• Circuit: X-Phase Control IC
• Pbf: PbF Option Available
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Voltage - Supply: -
• Operating Temperature: -
• Other names: IR3510MTRPBFTR

IR3510
Ior
max*
Rds
(
on
)
Rorset
=
Iorset
Where, Iormax is the max. allowed reverse current which is normally 10% or less of the rated output current.
The constant current source Iorset is the same as Irosc which is determined by the switching frequency.
Fig17. 15 shows the Irosc changing with the Rosc.
A 10nF-22nF cap Cor is recommended between “OR+” and “OR-“ pins and placed close to the IC.
IR3088A Phase IC Componets
Please refer to IR3088A datasheet to select the values for the components around the phase ICs.
Rcs+ and Ccs+ are the two extra components needed for Oring application. Rcs+ is needed to prevent current
sense amplifier output from saturation due to a potential negative voltage swing on the output terminal of the
inductor, which can be caused by the turn-off of the Oring FETs. Ccs+ can be 100pF to eliminate high frequency
noise from current sense input.
In order to balance the offset voltage caused by the input bias current, select Rcs- to be the sum of Rcs+ and
Rcs.
IR Confidential
Page 32 of 36
May 18, 2009