IR3082AMPBF International Rectifier, IR3082AMPBF Datasheet - Page 28

• Manufacturer Part Number: IR3082AMPBF
• Description: IC XPHASE CONTROL 9.6V 20-MLPQ
• Manufacturer: International Rectifier
• Series: XPhase™r

Specifications of IR3082AMPBF

• 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
• Peak Reflow Compatible (260 C): Yes
• Frequency: 1MHz
• Rohs Compliant: Yes
• Controller Type: PWM
• Filter Terminals: SMD
• 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

VOLTAGE LOOP COMPENSATION
All ceramic output capacitors are used in the design, type III compensation as shown in Figure 18(b) is used here.
Choose the desired crossover frequency fc =80 kHz and determine Rcp and C
Choose C
CURRENT SHARE LOOP COMPENSATION
The crossover frequency of the current share loop f
loop f
Choose C
C
C
C
R
R
F
CP
MI
SCOMP
CP
FB
FB
1
C
2 (
(
10
R
4
V
. Choose the crossover frequency of current share loop f
1
2
S
S
PWMRMP
I
Page 28 of 33
˜
˜
. 0

˜
˜
R
CP1
12
SCOMP
. 0
R
f
f
V
65
FB
L
C
C
1
PWMRMP
CP
4 .
65
)
E
˜
˜
2
=220pF to reduce high frequency noise.
nF
R
˜
˜
R
˜
˜
C
C
18
L
PWMRMP
1
2
FB
PWMRMP
E
E
=22nF
1
˜
2 .
˜
230

C
V
˜
o
V
10
E
10
4
DAC
˜
S
˜
R
V
3
˜
˜
115
FB
˜
I
˜
f
)
12
80
SW
˜
˜
(
˜
I
(
220
V
V
O
:
˜
˜
˜
1
10
V
100
PWMRMP
I
˜
G

PWMRMP
˜
3
V
10
CS
V
˜
O
˜
100
DAC
34
. 2
_
˜
ROOM
2
9
31
Choose R
˜
S
)
/
(
2 (
) 5
. 0
˜
˜
10
. 1 (
. 8
f
42
S
˜
18
˜
CI
(
R
3
54
33
˜
47
˜
80
2 .
LE
˜
10
(
. 1
nF
12

˜
˜
˜
˜
05
10
10
1 [
10
100
FB1
3

, choose C

3
˜
3
10
) 5
0
6
)
˜
=100
2
100
8 .
2
˜
˜
S
6
˜
7
32
˜
1 [

(
5 .
˜
220
)
. 1

˜
f
˜
10
CI
10
CI
35
2
S
˜
˜
10
35
12
)
C
should be at least one decade lower than that of the voltage
4
˜
˜
FB
10
E
)
. 1
2 .
˜
(
12
9
600
˜
˜
335
nF
=10nF
/
2
(
˜
) 5
V
10
S

O
˜
. 1
˜
˜
, Choose C
10
3
10
(
I
47
35
˜
CI
O
1504
3
˜
)]
˜
10
)
˜
=10kHz
0
10
˜
8 .
F
3
˜
MI
6
˜
10
. 1
˜
32
05
. 0
6
CP
011
)
,
˜
˜
˜
and calculate C
10
. 1 (
230
=33nF
33
6
˜
CP
0

8 .
100
:
. 2
˜
7
31
5 .
k
˜
:
10
SCOMP
4
)
100
05/02/2006
,
IR3082A
]
˜
. 0
011