- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377500 > IR3086M (International Rectifier) RESISTOR 2.2 OHM 35W TO220 PDF資料下載
參數(shù)資料
| 型號： | IR3086M |
| 廠商： | International Rectifier |
| 英文描述： | RESISTOR 2.2 OHM 35W TO220 |
| 中文描述： | 相位IC帶OVP，故障及超溫檢測 |
| 文件頁數(shù)： | 7/15頁 |
| 文件大?。?/td> | 417K |
| 代理商： | IR3086M |
IR3086
Page 7 of 15
9/1/03
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 drops in the PCB related to changes in load current.
VOUT
GND
RVFB
SYSTEM
REFERENCE
VOLTAGE
VBIAS
+
-
VBIAS
REGULATOR
VDAC
BIASIN
PWMRMP
RPWMRMP
+
-
CPWMRMP
+
-
CLOCK
PULSE
GENERATOR
ENABLE
RAMP
DISCHARGE
CLAMP
DACIN
+
-
VOSNS+
VOSNS-
RAMPIN+
+
-
RAMPIN-
ISHARE
VOSNS-
RDRP
+
-
VDRP
IIN
SCOMP
CSCOMP
O% DUTY
CYCLE
COMPARATOR
VDAC
VDRP
AMP
IFB
+
-
+
-
+
-
GATEH
EAIN
GATEL
CSIN+
CSIN-
VPEAK
VVALLEY
RAMP GENERATOR
50%
DUTY
CYCLE
RMPOUT
+
-
RRAMP1
RRAMP2
CURRENT
SENSE
AMP
PWM
LATCH
DOMINANT
RESET
SHARE
ADJUST
ERROR
AMP
S
R
X34
ERROR
AMP
IROSC
RAMP
SLOPE
ADJUST
EAOUT
X
0.91
FB
CONTROL IC
COUT
+
-
20mV
10K
+
-
CPWMRMP
CSCOMP
RPWMRMP
+
-
+
-
+
-
+
-
10K
+
-
+
-
RRAMP1
CCS
RCS
RRAMP2
BIASIN
ISHARE
EAIN
RAMPIN-
RAMPIN+
SCOMP
PWMRMP
GATEH
CSIN+
CSIN-
DACIN
GATEL
VIN
PHASE IC
PHASE IC
SHARE
ADJUST
ERROR
AMP
CURRENT
SENSE
AMP
PWM
LATCH
DORESET
X34
R
S
20mV
CLOCK
PULSE
GENERATOR
RAMP
SLOPE
ADJUST
ENABLE
PWM
COMPARATOR
O% DUTY
CYCLE
COMPARATOR
SYSTEM
REFERENCE
VOLTAGE
RAMP
DISCHARGE
CLAMP
X
0.91
CCS
RCS
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. 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 RRAMP1
and RRAMP2 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 with 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 synchronization by swapping the RAMP + and – pins.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IR3086MTR | PHASE IC WITH OVP, FAULT AND OVERTEMP DETECT |
| IR3088M | XPHASE PHASE IC WITH FAULT AND OVERTEMP DETECT |
| IR3088MTR | XPHASE PHASE IC WITH FAULT AND OVERTEMP DETECT |
| IR3101 | RESISTOR 5.6 OHM 35W TO220 |
| IR3103 | Half-Bridge FredFET and Integrated Driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IR3086MPBF | 功能描述:IC CONTROLLER PHASE 20MLPQ 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 |
| IR3086MTR | 制造商:IRF 制造商全稱:International Rectifier 功能描述:PHASE IC WITH OVP, FAULT AND OVERTEMP DETECT |
| IR3086MTRPBF | 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 |
| IR3087 | 制造商:IRF 制造商全稱:International Rectifier 功能描述:XPHASE PHASE IC WITH OPTI-PHASE, OVP, AND OVERTEMP DETECT |
| IR3087M | 功能描述:IC XPHASE W/OVP/TM CTRL 20-MLPQ RoHS:否 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。