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參數(shù)資料
| 型號(hào)： | IR3500MTRPBF |
| 廠商： | International Rectifier |
| 英文描述： | XPHASE3TM VR11.0 & AMD PVID CONTROL IC |
| 中文描述： | XPHASE3TM VR11.0 |
| 文件頁(yè)數(shù)： | 36/47頁(yè) |
| 文件大?。?/td> | 778K |
| 代理商： | IR3500MTRPBF |
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IR3500
Page 36 of 47
June 12, 2007
The soft start delay time is
mS
I
C
TD
CHG
DEL
SS
67
.
10
*
5
52
4
*
10
*
1
4
*
1
6
6
/
=
=
=
The VR ready delay time is
mS
I
V
C
TD
CHG
O
DEL
SS
14
.
10
*
5
52
)
0
*
10
*
1
)
0
*
3
6
6
/
=
=
=
The minimum over current fault latch delay time is
C
t
OCDEL
=
ms
I
DISCHG
DEL
SS
2
10
*
55
12
.
*
10
*
1
12
.
*
6
6
/
=
=
VDAC Slew Rate Programming Capacitor
C
VDAC
and Resistor
R
VDAC
Calculate the VDAC down-slope slew-rate programming capacitor from the required down-slope slew rate. The
up-slope slew rate is the same as the down-slope slew rate.
6
=
=
=
nF
SR
I
C
DOWN
SINK
VDAC
18
10
/
10
*
5
10
*
44
6
3
Calculate the programming resistor.
=
+
=
+
=
10
)
10
*
18
(
10
*
2
5
10
*
2
5
2
9
15
2
15
VDAC
C
VDAC
R
Over Current Setting Resistor
R
OCSET
The room temperature is 25oC and the target PCB temperature is 100 oC. The phase IC die temperature is about
1 oC higher than that of phase IC, and the inductor temperature is close to PCB temperature.
Calculate Inductor DC resistance at 100 oC,
+
=
R
R
ROOM
L
MAX
L
1
_
_
Set the over current limit at 135A. From Figure 24, the bias current of OCSET pin (I
OCSET
) is 11.9uA with
R
OSC
=50k
. The total current sense amplifier input offset voltage is 0.3mV, which includes the offset created by
the current sense amplifier (CSA) input bias current through the resistor R
CS
.
mV
V
TOFST
CS
3
_
=
Calculate constant K
P,
the ratio of inductor peak current over average current in each phase,
1
(
)
(
)
1
=
D
D
f
L
n
I
sw
LIMIT
I
R
/
]
)
1
[
_
_
+
+
=
=
+
=
m
T
T
ROOM
MAX
L
29
.
)]
25
100
(
10
*
3850
1
10
*
1
)]
(
10
*
3850
6
3
_
6
(
)
(
)
082
.
)
108
.
1
108
.
2
250
47
.
3
135
)
108
.
3
1
0
(
)
3
0
108
.
3
)
108
.
1
108
.
12
)
1
2
/
)
=
+
+
=
k
u
D
n
m
n
m
D
n
D
D
V
K
I
P
OCSET
CS
TOFST
CS
P
MAX
L
LIMIT
n
135
OCSET
I
G
V
K
R
=
+
=
k
181
)
10
*
9
11
/(
34
)
10
*
3
082
.
10
*
29
.
3
(
6
3
3
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|---|---|
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IR3500V | 制造商:IRF 制造商全稱:International Rectifier 功能描述:XPHASE3TM VR11.1 CPU VTT CONTROL IC |
| IR3500VMPBF | 制造商:IRF 制造商全稱:International Rectifier 功能描述:XPHASE3TM VR11.1 CPU VTT CONTROL IC |
| IR3500VMTRPBF | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 X-PHASE IR3500V AMD SVID CTRL IC RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| IR3502 | 制造商:IRF 制造商全稱:International Rectifier 功能描述:XPHASE3TM CONTROL IC |
| IR3502_09 | 制造商:IRF 制造商全稱:International Rectifier 功能描述:XPHASE3TM CONTROL IC |
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