參數(shù)資料
型號： IR3088MTR
廠商： International Rectifier
英文描述： XPHASE PHASE IC WITH FAULT AND OVERTEMP DETECT
中文描述： XPHASE相集成電路及超溫故障檢測
文件頁數(shù)： 7/34頁
文件大?。?/td> 688K
代理商： IR3088MTR
IR3088
PWM Control Method
The PWM block diagram of the
XPhase
TM
architecture is shown in Figure 2. Feed-forward voltage mode control with
trailing edge modulation is used. A high-gain wide-bandwidth voltage type error amplifier in the Control IC is used
for the voltage control loop. An external RC circuit connected to the input voltage and ground is used to program the
slope of the PWM ramp and to provide the feed-forward control at each phase. The PWM ramp slope will change
with the input voltage and automatically compensate for changes in the input voltage. The input voltage can change
due to variations in the silver box output voltage or due to the wire and PCB-trace voltage drop related to changes
in load current.
+
-
10K
+
-
SHARE
ADJUST
ERROR
AMPLIFIER
CURRENT
SENSE
AMPLIFIER
X34
X
0.91
20mV
+
-
+
-
+
-
10K
SHARE
ADJUST
ERROR
AMPLIFIER
CURRENT
SENSE
AMPLIFIER
X34
20mV
X
0.91
+
-
+
-
+
-
+
-
+
-
DACIN
PWMRMP
BIASIN
RAMPIN-
RAMPIN+
GATEH
SCOMP
ISHARE
CSIN+
GATEL
EAIN
CSIN-
SYSTEM
REFERENCE
VOLTAGE
ENABLE
CLOCK
PULSE
GENERATOR
BODY
BRAKING
COMPARATOR
RAMP
DISCHARGE
CLAMP
PWM
LATCH
S
RESET
DOMINANT
PHASE IC
R
PWM
COMPARATOR
RDRP
RPWMRMP
RPHS2
CSCOMP
+
-
RPHS1
+
-
+
-
RCS
RVFB
+
-
CPWMRMP
CSCOMP
CCS
RPWMRMP
RCS
+
-
CPWMRMP
+
-
+
-
CCS
RPHS2
RPHS1
+
-
GND
VOUT
BIASIN
VDAC
VBIAS
DACIN
PWMRMP
RAMPIN+
VOSNS-
VOSNS+
VOSNS-
ISHARE
RAMPIN-
IIN
VDRP
EAIN
GATEH
SCOMP
CSIN-
CSIN+
GATEL
EAOUT
RMPOUT
VIN
FB
IROSC
SYSTEM
REFERENCE
VOLTAGE
VDAC
BODY
BRAKING
COMPARATOR
RAMP
DISCHARGE
CLAMP
ENABLE
CLOCK
PULSE
GENERATOR
VBIAS
REGULATOR
IFB
VDRP
AMP
50%
DUTY
CYCLE
RAMP GENERATOR
VVALLEY
VPEAK
ERROR
AMP
R
S
RESET
DOMINANT
PWM
LATCH
PHASE IC
COUT
CONTROL IC
PWM
COMPARATOR
Figure 2. PWM Block Diagram
Frequency and Phase Timing Control
An oscillator with programmable frequency is located in the Control IC. The output of the oscillator is a 50% duty
cycle triangle waveform with peak and valley voltages of approximately 5V and 1V respectively. This signal is used
to program both the switching frequency and phase timing of the Phase ICs. The Phase IC is programmed by
resistor divider R
PHS1
and R
PHS2
connected between the VBIAS reference voltage and the Phase IC LGND pin. A
comparator in the Phase ICs detects the crossing of the oscillator waveform over the voltage generated by the
resistor divider and triggers a clock pulse that starts the PWM cycle. The peak and valley voltages track the VBIAS
voltage reducing potential Phase IC timing errors. Figure 3 shows the Phase timing for an 8 phase converter. Note
that both slopes of the triangle waveform can be used for phase timing by swapping the RMPIN+ and RMPIN– pins,
as shown in Figure 2.
Page 7 of
34
9/30
/04
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IR3088MTRPBF 功能描述:IC CTLR XPHASE 28-MLPQ RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:XPhase™ 應(yīng)用說明: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
IR3092 制造商:IRF 制造商全稱:International Rectifier 功能描述:2 PHASE OPTERON, ATHLON, OR VR10.X CONTROL IC
IR3092M 功能描述:IC CONTROLLER 2PHASE 48-MLPQ RoHS:否 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR)
IR3092MPBF 功能描述:IC VID VOLTAGE PROGRAMMER 48MLPQ RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR)
IR3092MTR 功能描述:IC CONTROLLER 2PHASE 48-MLPQ RoHS:否 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR)
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