參數(shù)資料
型號(hào)： IR3080M
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(yè)數(shù)： 25/41頁(yè)
文件大?。?/td> 2267K
代理商： IR3080M
IR3080
RCP
CCP1
EAOUT
CCP
RFB
RDRP
VO+
VDRP
VDAC
+
-
EAOUT
FB
CFB
CDRP
RCP
EAOUT
CCP1
CCP
RFB
RDRP
VO+
VDRP
VDAC
FB
+
-
EAOUT
RFB1
(a) Type II compensation
(b) Type III compensation
Figure 17. Voltage loop compensation network
2
2
)
*
*
*
2
1
*
)
2
C
C
O
PWMRMP
V
FB
C
E
E
C
CP
R
f
V
R
C
L
f
R
π
π
+
=
(30)
CP
E
E
CP
R
C
L
C
=
10
(31)
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 AVP Applications
Determine the compensation at no load, the worst case condition. Assume the time constant of the resistor and
capacitor across the output inductors matches that of the inductor, the crossover frequency and phase margin of the
voltage loop can be estimated by Equations (32) and (33), where R
LE
is the equivalent resistance of inductor DCR.
R
f
*
*
2
π
180
)
tan(
90
1
=
A
C
LE
FB
CS
E
DRP
C
R
R
G
C
=
1
(32)
π
θ
(33)
Choose the desired crossover frequency fc around fc1 estimated by Equation (32) or choose fc between 1/10 and
1/5 of the switching frequency per phase, and select the components to ensure the slope of close loop gain is -20dB
/Dec around the crossover frequency. Choose resistor R
FB1
according to Equation (34), and determine C
FB
and
R
DRP
from Equations (35) and (36).
1
1
=
to
FB
FB
R
R
3
1
FB
R
f
π
C
R
R
C
=
FB
FB
R
R
2
2
1
=
(34)
1
4
FB
C
C
=
(35)
DRP
FB
FB
FB
DRP
R
+
)
(
1
(36)
R
CP
and C
CP
have limited effect on the crossover frequency, and are used only to fine tune the crossover frequency
and transient load response. Determine R
CP
and C
CP
from Equations (37) and (38).
Page 25 of 41
9
/30/04
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IR3080MPBF 制造商:International Rectifier 功能描述:Controller IC Package/Case:32-MLPQ
IR3080MTR 功能描述:IC PHASE CONTROLLER 32L MLPQ RoHS:否 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:XPhase™ 應(yīng)用說(shuō)明:Ultrasound Imaging Systems Application Note 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:37 系列:- 應(yīng)用:醫(yī)療用超聲波成像，聲納 電流 - 電源:- 電源電壓:2.37 V ~ 6 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:56-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-TQFN-EP（8x8） 包裝:管件
IR3080MTRPBF 功能描述:開(kāi)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(kāi)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
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