參數(shù)資料
型號： IR3088AMTR
廠商： International Rectifier
英文描述： XPHASETM PHASE IC WITH FAULT AND OVERTEMP DETECT
中文描述： XPHASETM相集成電路及超溫故障檢測
文件頁數(shù)： 19/34頁
文件大?。?/td> 1264K
代理商： IR3088AMTR
IR3088A
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
+
=
(27)
CP
E
E
CP
R
C
L
C
=
10
(28)
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 (29) and (30), 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
(29)
π
θ
(30)
Choose the desired crossover frequency fc around fc1 estimated by Equation (29) 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 (31), and determine C
FB
and
R
DRP
from Equations (32) and (33).
1
1
=
to
FB
FB
R
R
3
1
FB
R
f
π
C
R
R
C
=
FB
FB
R
R
2
2
1
=
(31)
1
4
FB
C
C
=
(32)
DRP
FB
FB
FB
DRP
R
+
)
(
1
(33)
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 (34) and (35).
V
R
C
L
f
R
=
O
PWMRMP
FB
E
E
C
CP
V
2
)
2
π
(34)
CP
E
E
CP
R
C
L
C
=
10
(35)
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 (15), 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 (36), and determine the component values based on Equations (37) to
(41),
θ
π
)]
5
+
180
(
4
tan[
=
C
K
(36)
Page 19 of 34
9/30
/04
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相關代理商/技術參數(shù)
參數(shù)描述
IR3088AMTRPBF 功能描述:開關變換器、穩(wěn)壓器與控制器 XPHASE IC W/ FAULT OVERTEMP DETECT 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 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
IR3088APBF 制造商:IRF 制造商全稱:International Rectifier 功能描述:XPHASETM PHASE IC WITH FAULT AND OVERTEMP DETECT
IR3088M 功能描述:IC XPHASE W/FAULT DET 20L-MLPQ RoHS:否 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:XPhase™ 應用說明:Ultrasound Imaging Systems Application Note 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:37 系列:- 應用: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 供應商設備封裝:56-TQFN-EP（8x8） 包裝:管件
IR3088MPBF 功能描述:IC CONTROLLER PHASE 20L-MLPQ RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:XPhase™ 應用說明:Ultrasound Imaging Systems Application Note 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:37 系列:- 應用: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 供應商設備封裝:56-TQFN-EP（8x8） 包裝:管件
IR3088MTR 制造商:IRF 制造商全稱:International Rectifier 功能描述:XPHASE PHASE IC WITH FAULT AND OVERTEMP DETECT
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