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參數(shù)資料
| 型號： | IR3080MTR |
| 廠商： | International Rectifier |
| 英文描述： | XPHASE VRD10 CONTROL IC WITH VCCVID & OVERTEMP DETECT |
| 中文描述： | XPHASE VRD10控制集成電路VCCVID |
| 文件頁數(shù)： | 26/41頁 |
| 文件大?。?/td> | 2267K |
| 代理商： | IR3080MTR |
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IR3080
O
PWMRMP
V
FB
E
E
C
CP
V
R
C
L
f
R
=
2
)
2
π
(37)
CP
E
E
CP
R
C
L
C
=
10
(38)
C
CP1
is optional and may be needed in some applications to reduce the jitter caused by the high frequency noise. A
ceramic capacitor between 10pF and 220pF is usually enough.
Type III Compensation for Non-AVP Applications
Resistor R
FB
is chosen according to Equations (16), and resistor R
DRP
and capacitor C
DRP
are not needed. Choose
the crossover frequency fc between 1/10 and 1/5 of the switching frequency per phase and select the desired phase
margin
θ
c. Calculate K factor from Equation (39), and determine the component values based on Equations (40) to
(44),
θ
π
)]
5
+
180
(
4
tan[
=
C
K
(39)
K
V
V
f
C
L
R
R
O
PWMRMP
C
E
E
FB
CP
=
2
)
2
π
(40)
CP
C
CP
R
f
K
C
=
π
2
(41)
CP
C
CP
R
K
f
C
=
π
2
1
1
(42)
FB
C
FB
R
f
K
C
=
π
2
(43)
FB
C
FB
C
K
f
R
=
π
2
1
1
(44)
CURRENT SHARE LOOP COMPENSATION
The crossover frequency of the current share loop should be at least one decade lower than that of the voltage loop
in order to eliminate the interaction between the two loops. A capacitor from SCOMP to ground is usually enough
for the share loop compensation. Choose the crossover frequency of current share loop (f
CI
) based on the
crossover frequency of voltage loop (f
C),
and determine the C
SCOMP
,
1
*
*
*
*
*
65
.
LE
ROOM
CS
O
I
PWMRMP
SCOMP
f
V
π
6
_
10
*
05
.
*
2
*
)]
(
*
*
*
2
CI
O
MI
O
O
E
CI
F
I
V
C
f
R
G
I
V
R
C
+
=
π
(45)
Where F
MI
is the PWM gain in the current share loop
,
R
F
=
)
(
*
)
(
*
*
*
DAC
V
I
DAC
V
PWMRMP
V
I
PWMRMP
SW
PWMRMP
PWMRMP
V
MI
V
V
f
C
(
46)
Page 26 of 41
9
/30/04
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IR3080MTRPBF | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 XPHASE VRD10 CTRL IC CTRL IC 200 to 700mV 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 |
| IR3080PBF | 制造商:IRF 制造商全稱:International Rectifier 功能描述:XPHASETM VRD10 CONTROL IC WITH VCCVID & OVERTEMP DETECT |
| IR3081 | 制造商:IRF 制造商全稱:International Rectifier 功能描述:XPHASE VR 10.0 CONTROL IC |
| IR3081A | 制造商:IRF 制造商全稱:International Rectifier 功能描述:XPHASETM VR 10 CONTROL IC |
| IR3081AM | 制造商:IRF 制造商全稱:International Rectifier 功能描述:XPHASETM VR 10 CONTROL IC |
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