IR3082AMTRPBF International Rectifier, IR3082AMTRPBF Datasheet - Page 25
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IR3082AMTRPBF
Manufacturer Part Number
IR3082AMTRPBF
Description
IC XPHASE CONTROL 9.6V 20-MLPQ
Manufacturer
International Rectifier
Series
XPhase™r
Datasheet
1.IR3082AMTRPBF.pdf
(33 pages)
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