IR3082AMTRPBF International Rectifier, IR3082AMTRPBF Datasheet - Page 25

• Manufacturer Part Number: IR3082AMTRPBF
• Description: IC XPHASE CONTROL 9.6V 20-MLPQ
• Manufacturer: International Rectifier
• Series: XPhase™r

Specifications of IR3082AMTRPBF

• Applications: Processor
• Current - Supply: 12mA
• Voltage - Supply: 8.05 V ~ 16 V
• Operating Temperature: 0°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 20-MLPQ
• Ic Function: Control IC
• Supply Voltage Range: 8.05V To 16V
• Operating Temperature Range: 0°C To +100°C
• Digital Ic Case Style: MLPQ
• No. Of Pins: 20
• Filter Terminals: SMD
• Supply Voltage Min: 9.6V
• Rohs Compliant: Yes
• Controller Type: PWM
• Frequency: 1MHz
• Package: 20-Lead MLPQ
• Circuit: X-Phase Control IC
• Switch Freq (khz): 150kHz to 1.0MHz
• Pbf: PbF Option Available
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: IR3082AMTRPBFTR

SPECIFICATIONS
Input Voltage: V
DAC Voltage: V
No Load Output Voltage Offset: V
Maximum Output Current: I
Output Impedance: R
Soft Start Time: t
Dynamic VID Down-Slope Slew Rate: SR
Over Temperature Threshold: T
POWER STAGE
Phase Number: n=5
Switching Frequency: f
Output Inductors: L=220 nH, R
Output Capacitors: C=47uF, R
IR3082A EXTERNAL COMPONENTS
Oscillator Resistor Rosc
Once the switching frequency is chosen, R
frequency of 600kHz per phase, choose R
Soft Start Capacitor C
Calculate the soft start capacitor from the required soft start time.
The soft start delay time is
VDAC Slew Rate Programming Capacitor C
From Figure 15, the sink current of VDAC pin corresponding to 600kHz (R
VDAC down-slope slew-rate programming capacitor from the required down-slope slew rate.
Calculate the programming resistor.
C
t
t
C
R
VccPG
OCDEL
VDAC
VDAC
SS
/
DEL
0
C
SR
Page 25 of 33
C
5 .
SS
I
SS
SINK
I
DOWN

CHG
I
/
/
DEL
DISCHG
3
V
DEL
2 .
C
O
˜
VDAC
DAC
˜
˜
t
I
10
=12 V
SS
˜
(
SS
I
. 0
. 3
2
CHG
5 .
2
11
83
15
=1.3 V
= 2 mS
125
˜
1
O
10

3 .
55
=0.75 m
SW
V
SS/DEL
˜
0
C
10

O
3
5 .
˜
SS
/
=600 kHz
10
(

10
50

5
OMAX
6
/
. 1
DEL
˜
5-PHASE OPTERON CONVERTER
(
6
10
) 3

3
47
6
˜
2 .
C
L
15
2
PCB
=0.42 m
= 2m
˜
˜
6
˜
=100 ADC
˜
. 0
10
)
10
10
50
O_NLOFST
0
˜
11
10
1 .
nF
=115 ºC
9
15
3
˜
)
10
2
3
, Choose C
2
2 .
6
2
. 0
DOWN
˜
ms
:
OSC
(
55
09
=15mV
. 3
83
uF
˜
OSC
10
=18.2k
VDAC
=2.5mV/uS

, choose
. 1
6
VDAC
can be determined from the curve in Figure 13. For switching
335
and Resistor R
32

=47nF
. 1
) 3
C
SS
/
. 2
DEL
17
ms
0
VDAC
1 .
uF
OSC
=18.2k
05/02/2006
IR3082A
uA. Calculate the