参数资料
型号: IR3009
厂商: International Rectifier
英文描述: 3 PHASE OPTERON, ATHLON, OR VR10.X CONTROL IC
中文描述: 3相皓龙,速龙,或控制IC的VR10.X
文件页数: 30/39页
文件大小: 693K
代理商: IR3009
IR3093
Page 30 of 39
07/15/04
6
3
_
10
*
42
10
*
20
FB
I
NLOFST
O
FB
V
R
476
&KRRVH 5
FB
= 499
:
k
R
n
G
R
R
R
O
MIN
CS
MAX
L
FB
DRP
1
10
1
3
21
10
9
499
3
3
_
_
Choose R
DRP
= 3.09k
Inductor Current Sensing Capacitor C
CS
and Resistors R
CS1
and R
CS2
Choose capacitor C
CS
= 0.22uF calculate R
CS1
R
L
R
CS
10
*
22
.
Set BIASOUT voltage Resistor Rset
Bias current I
SETBIAS
is around 160uA in this case. Set V
BIASOUT
around 8V to be gate drive voltage of
MOSFETs.
V
R
SETBIAS
10
160
Choose R
SET
=51.1k
Compensation of Voltage Loop
:
k
C
L
CS
8
10
*
65
.
/
10
*
25
.
6
3
6
1
Choose R
CS1
=2k
:
k
I
BIASOUT
SET
9
51
3
8
3
6
AL-Polymer output capacitors are used in the design, and the crossover frequency of the voltage loop
can be estimated as,
R
f
CE
LE
FB
CS
E
007
.
2
)
(
2
S
S
R
COMP
and C
COMP
are used to fine tune the crossover frequency and transient load response. Choose
the desired crossover frequency fc1 (=30kHz) and determine R
COMP
and C
COMP
.
33
.
RAMP
I
V
V
R
C
L
f
R
M
I
C
L
C
COMP
10
5
In practice, adjust R
COMP
and C
COMP
if need to get desired dynamic load response performance.
kHz
R
R
R
G
C
DRP
C
28
]
10
*
7
)
/
10
*
65
.
499
5
23
[
10
*
09
.
3
3
3
18
.
63
.
12
O
M
V
F
:
k
F
V
FB
E
E
C
COMP
5
18
.
12
499
007
.
)
/
10
250
(
)
10
30
2
)
2
9
2
3
2
1
S
S
nF
R
E
E
COMP
48
007
.
)
/
10
250
(
10
10
3
9
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