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参数资料
| 型号： | IR3080MTR |
| 厂商： | International Rectifier |
| 英文描述： | XPHASE VRD10 CONTROL IC WITH VCCVID & OVERTEMP DETECT |
| 中文描述： | XPHASE VRD10控制集成电路VCCVID |
| 文件页数： | 26/41页 |
| 文件大小： | 2267K |
| 代理商： | IR3080MTR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页当前第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页
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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相关代理商/技术参数 |
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|---|---|
| IR3080MTRPBF | 功能描述:开关变换器、稳压器与控制器 XPHASE VRD10 CTRL IC CTRL IC 200 to 700mV RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| IR3080PBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASETM VRD10 CONTROL IC WITH VCCVID & OVERTEMP DETECT |
| IR3081 | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE VR 10.0 CONTROL IC |
| IR3081A | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASETM VR 10 CONTROL IC |
| IR3081AM | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASETM VR 10 CONTROL IC |
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