IR3513ZMTRPBF International Rectifier, IR3513ZMTRPBF Datasheet - Page 26

• Manufacturer Part Number: IR3513ZMTRPBF
• Description: IC CTRL XPHASE3 POL 32-MLPQ
• Manufacturer: International Rectifier
• Series: XPhase3™r

Specifications of IR3513ZMTRPBF

• Applications: Processor
• Current - Supply: 3mA
• Voltage - Supply: 8 V ~ 16 V
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: *
• Package: 32-Lead MLPQ
• Circuit: X-Phase Control IC
• Switch Freq (khz): 250kHz to 1.5MHz
• Pbf: PbF Option Available
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DESIGN PROCEDURES
IR3513 EXTERNAL COMPONENTS
Oscillator Resistor Rosc
The oscillator of IR3513 generates square-wave pulses to synchronize the phase ICs. The switching frequency of
the each phase converter equals the PHSOUT frequency, which is set by the external resistor R
the curve in Figure 16. The CLKOUT frequency equals the switching frequency multiplied by the phase number.
Soft Start Capacitor C
The C
delay time and over-current fault latch delay time after VR ready. These parameters can be calculated with the
following equations:
SS/DEL
Page 26
capacitor programs four different time parameters, i.e. soft start delay time, soft start time, VR ready
55
50
45
40
35
30
25
20
15
10
SS/DEL
5
200
T
T
T
T
ssdelay
ss
PG
OC
300
=
_
_
delay
delay
C
=
Figure 16 Operational Frequency vs Rosc Resistor
400
SS
C
=
=
/
DEL
I
SS
REPLACEMENT PRODUCT – IR3513ZMTRPBF
C
C
500
CHG
NOT RECOMMENDED FOR NEW DESIGNS
/
I
SS
SS
DEL
*
CHG
/
/
Vref
600
DEL
DEL
1 *
I
700
( *
*
4 .
CHG
I
IR3513 Frequency vs. ROSC Resistor
120
=
CHG
. 3
=
800
C
12
Frequency (KHz)
52
C
*
SS
52
10
SS
−
5 .
/
900
DEL
5 .
/
Vref
−
*
DEL
3
*
10
1000
*
10
=
1 *
0
−
)
C
6
8 .
−
1100
=
6
4 .
SS
C
/
52
DEL
1200
52
SS
5 .
/
5 .
DEL
*
1300
*
120
*
10
10
*
1400
. 2
−
*
−
6
6
32
10
1500
−
3
.
1600
RROSC
Nominal Spec
(1)
(2)
(3)
(4)
May 11, 2008
OSC
IR3513
according to