IR3527MTRPBF International Rectifier, IR3527MTRPBF Datasheet - Page 16

• Manufacturer Part Number: IR3527MTRPBF
• Description: IC CTRL XPHASE3 DUAL 24-MLPQ
• Manufacturer: International Rectifier
• Series: XPhase3™r

Specifications of IR3527MTRPBF

• Applications: Processor
• Current - Supply: 8mA
• Voltage - Supply: 8 V ~ 28 V
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: *
• Package: 24-Lead MLPQ
• Circuit: X-Phase Phase IC
• Iout (a): 1.3A Gate Driver
• Pbf: PbF Option Available
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LAYOUT GUIDELINES
The following layout guidelines are recommended to reduce the parasitic inductance and resistance of the
PCB layout; therefore, minimizing the noise coupled to the IC.
x Separate analog bus (EAIN, DACIN, and IOUT) from digital bus (CLKIN, PSI, PHSIN, and PHSOUT) to
x Place current sense resistors and capacitors (R
x Place the decoupling capacitors C
x Place the phase IC as close as possible to the MOSFETs to reduce the parasitic resistance and
x Place the input ceramic capacitors close to the drain of top MOSFET and the source of bottom MOSFET.
x There are four switching power loops. Two loops include the input capacitors, top MOSFET, inductor,
reduce the noise coupling.
the inductor current sense wires, but separate the two wires by ground polygon. The wire from the inductor
terminal to CSIN- should not cross over the fast transition nodes, i.e., switching nodes, gate drive outputs,
and bootstrap nodes.
phase IC respectively.
inductance of the gate drive paths.
Use combination of different packages of ceramic capacitors.
output capacitors and the load; two other loops consist of bottom MOSFET, inductor, output capacitors and
the load. Route the switching power paths using wide and short traces or polygons; use multiple vias for
connections between layers.
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Figure 8 - Layout Guidelines for IR3527
VCC
and C
VCCL
CS
and C
as close as possible to VCC and VCCL pins of the
CS
) close to phase IC. Use Kelvin connection for
IR3527
V3.0