IR3510MTRPBF International Rectifier, IR3510MTRPBF Datasheet - Page 13

• 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

SYSTEM THEORY OF OPERATION
XPhase
The XPhase
requiring small size, design flexibility, low voltage, high current and fast transient response. The architecture can
be used in any multiphase converter ranging from 1 to 16 or more phases where flexibility facilitates the design
tradeoff of multiphase converters. The scalable architecture can be applied to other applications which require high
current or multiple output voltages.
As shown in Figure 1, the XPhase
converters each using a single Phase IC IR3088A. The IR3510 Control IC communicates with the Phase ICs
through a 5−wire analog bus, i.e. bias voltage, reference voltage, phase timing, error amplifier output and average
phase current. The IR3510 control IC has the functions of reference voltage, bias voltage, PWM ramp oscillator,
soft-start, voltage error amplifier, current error amplifier, current limit, current report and fault protections etc. The
IR3088A Phase IC implements the functions required by the converter of each phase, i.e. the gate drivers, PWM
comparator and latch, over voltage protection, and current sensing and sharing.
VSET
OCPSET
IOUT
VSET
OCPSET
IOUT
IGAIN
Page 13 of 36
TM
Voltage Regulator Architecture
+
-
50%
DUTY
CYCLE
OCP CLAMP
TM
IR3510 CONTROL IC
CURRENT REPORT AMP
+
-
VBIAS
REGULATOR
architecture is designed for multiphase interleaved buck converters which are used in applications
+
-
RAMP GENERATOR
-
+
VREF BUFFER
REMOTE SENSE AMP
-
+
+
-
+
-
VPEAK
VVALLEY
+
-
VOLTAGE
ERROR AMP
CURRENT
ERROR AMP
IIN
RMPOUT
VBIAS
VREF
VOSNS-
VOSNS-
VO
VFB
IREF
EAOUT
IFB
TM
architecture consists of an IR3510 Control IC and a scalable array of phase
Figure 1 – System Block Diagram
IR Confidential
RPWMRMP
CPWMRMP
RPHS1
RPHS2
RPHS1
RPHS2
RPWMRMP
CPWMRMP
CSCOMP
CSCOMP
RAMPIN+
RAMPIN-
PWMRMP
RAMPIN+
RAMPIN-
PWMRMP
SCOMP
ISHARE
DACIN
SCOMP
ISHARE
DACIN
BIASIN
EAIN
BIASIN
EAIN
SHARE ADJUST
ERROR AMPLIFIER
SHARE ADJUST
ERROR AMPLIFIER
VIN
ISHARE
EAIN
RAMP
VBIAS
DACIN
10K
10K
+
-
+
-
SYSTEM
REFERENCE
VOLTAGE
SYSTEM
REFERENCE
VOLTAGE
CLOCK
PULSE
GENERATOR
CLOCK
PULSE
GENERATOR
+
-
+
-
ADDITIONAL PHASES
IR3088A PHASE IC
IR3088A PHASE IC
RAMP
DISCHARGE
CLAMP
-
RAMP
DISCHARGE
CLAMP
-
PWM
COMPARATOR
+
PWM
COMPARATOR
+
ENABLE
ENABLE
-
+
-
+
+
-
+
-
PWM
LATCH
DOMINANT
PWM
LATCH
DOMINANT
S
RESET
R
BODY
BRAKING
COMPARATOR
+
S
RESET
R
BODY
BRAKING
COMPARATOR
+
+
+
CURRENT
SENSE
AMPLIFIER
CURRENT
SENSE
AMPLIFIER
X34
X34
+
-
+
-
May 18, 2009
VOUT
GATEH
GATEL
CSIN+
CSIN-
GATEH
GATEL
CSIN+
CSIN-
CCS
CCS
RCS
RCS
IR3510
COUT
VIN
VOSNS+
VOUT
GND
VOSNS-