IR3080M International Rectifier, IR3080M Datasheet - Page 34

• Manufacturer Part Number: IR3080M
• Description: IC PHASE CONTROLLER 32-MLPQ
• Manufacturer: International Rectifier
• Series: XPhase™r

Specifications of IR3080M

• Applications: Processor
• Current - Supply: 11mA
• Voltage - Supply: 9.5 V ~ 14 V
• Operating Temperature: 0°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 32-MLPQ
• Package: 32-Lead MLPQ
• Circuit: X-Phase Control IC
• Switch Freq (khz): 150kHz to 1.0MHz
• Pbf: PbF Option Available
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *IR3080M

The over temperature setting voltage of phases 1, 2, 5, and 6 is lower than the phase delay setting voltage,
VBIAS*RA
R
R
R
The over temperature setting voltage of Phases 3 and 4 is higher than the phase delay setting voltage,
VBIAS*RA
R
Bootstrap Capacitor C
Choose C
Decoupling Capacitors for Phase IC and Power Stage
Choose C
VOLTAGE LOOP COMPENSATION
Type III compensation is used for the converter with only ceramic output capacitors. The crossover frequency and
phase margin of the voltage loop can be estimated as follows.
Choose
Choose the desired crossover frequency fc (=140kHz) around fc1 estimated above, and calculate
θ
C
C
R
R
R
R
f
C
PHASE21
PHASE51
PHASE61
PHASE41
PHASEx
PHASEx
PHASE
C
PHASE
FB
DRP
1
1
=
Page 34 of 41
=
=
90
=
2
4
33
32
3
2
π
π
(
−
R
=
=
R
=
=
∗
∗
=10kΩ, R
=10kΩ, R
=10kΩ, R
=10kΩ, R
FB
BST
VCC
A
FB
PHASEx.
V
PHASEx.
(
C
RA
(
f
RA
V
V
tan(
BIAS
C
1
1
+
E
HOTSET
HOTSET
=0.1uF
=
PHASE
∗
=0.1uF, C
R
R
PHASEx
∗
R
DRP
. 0
2
3
FB
*
G
V
FB
R
) 5
1 (
∗
BIAS
1
CS
DRP
)
1
3
Pre-select R
V
Pre-select R
R
−
∗
PHASE22
PHASE52
PHASE62
PHASE42
∗
∗
∗
BIAS
−
FB
=
∗
∗
180
C
RA
R
V
−
π
V
RA
R
4
V
FB
PHASEx
BIAS
=
V
BIAS
π
PHASEx
FB
BIAS
∗
VCCL
BST
HOTSET
PHASE
=
2
3
∗
1 (
=
*
140
∗
63
∗
−
−
(
=2.94kΩ, R
=2.32kΩ, R
=8.25kΩ, R
=768Ω, R
−
R
162
1
R
162
V
=0.1uF
°
RA
)
PHASE
V
3
LE
HOTSET
*
1
=
HOTSET
∗
10
PHASEX1
PHASE11
PHASEx
=
+
V
. 1
6
=
110
110
3
BIAS
8 .
31
79
∗
2
576
*
110
π
* )
)
=
Ω
∗
1 (
)
)
PHASE43
∗
∗
12
R
∗
. 0
5
−
PHASE23
PHASE53
PHASE63
(
=10kΩ,
=10kΩ,
PHASEx
R
=
62
6 .
198
.
. 0
* 1
PHASE
5
*
665
∗
2 .
6
10
10
∗
8 .
22
nF
6
1
3
=2.80kΩ
−
)
9
31
8 .
−
*
=
=
=4.64kΩ
=4.42kΩ
=6.49kΩ
. 1
, Choose C
10
=
∗
(
=
. 7
79
10
. 0
2
−
87
. 1 (
7 .
665
6
*
)
nF
k
79
10
∗
Ω
576
6
∗
34
3
8 .
−
6
=
. 0
8 .
∗
∗
. 2
1 (
198
FB
162
6
−
8 .
67
. 1
−
=5.6nF
−
. 0
79
∗
k
∗
. 1
Ω
. 6
665
0 (
)
79
) 8
∗
5 .
10
)
∗
*
10
10
*
10
*
−
10
3
3
/
=
3
) 6
12
=
1 .
887
=
k
146
Ω
Ω
kHz
9
/30/04
IR3080