- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384511 > IRU3146CF (International Rectifier) DUAL SYNCHRONOUS PWM CONTROLLER WITH CURRENT SHARING CIRCUITRY AND AUTO-RESTART PDF資料下載
參數(shù)資料
| 型號： | IRU3146CF |
| 廠商： | International Rectifier |
| 英文描述： | DUAL SYNCHRONOUS PWM CONTROLLER WITH CURRENT SHARING CIRCUITRY AND AUTO-RESTART |
| 中文描述： | 雙同步PWM控制器，帶有均流電路和自動重新啟動 |
| 文件頁數(shù)： | 4/30頁 |
| 文件大?。?/td> | 528K |
| 代理商： | IRU3146CF |
第1頁第2頁第3頁當(dāng)前第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁
4
Rev. 1.1
6/25/04
IRU3146
www.irf.com
PIN DESCRIPTIONS
PIN# PIN SYMBOL
1
2
3
4
5,23
6,22
Fb2,Fb1
PIN DESCRIPTION
Power Good pin. Low when any of the outputs fall 10% below the set voltages.
Supply voltage for the internal blocks of the IC.
Output of the internal LDO.
Switching frequency setting resistor. (see Figure 10 for selecting resistor values).
Sense pins for OVP and PGood. For 2-Phase operation tie these pins together.
Inverting inputs to the error amplifiers. In current sharing mode, Fb1 is connected to a
resistor divider to set the output voltage and Fb2 is connected to programming resistor to
achieve current sharing. In independent 2-channel mode, these pins work as feedback
inputs for each channel.
Compensation pins for the error amplifiers.
These pins provide soft-start for the switching regulator. An internal current source charges
external capacitors that are connected from these pins to ground which ramp up the
output of the switching regulators, preventing them from overshooting as well as limiting
the input current. The converter can be shutdown by pulling these pins below 0.3V.
Current limit resistor (R
LIM
) connection pins for output 1 and 2. The other ends of R
LIM
s are
connected to the corresponding switching nodes.
Supply voltage for the high side output drivers. These are connected to voltages that must
be typically 6V higher than their bus voltages. A 1
μ
F high frequency capacitor must be
connected from these pins to GND to provide peak drive current capability.
Output drivers for the high side power MOSFETs.
1)
These pins serve as the separate grounds for MOSFET drivers and should be connected
to the system’s ground plane.
Output drivers for the synchronous power MOSFETs.
Supply voltage for the low side output drivers. This pin should be high for normal operation
The internal oscillator may be synchronized to an external clock via this pin.
When pulled High, it puts the device current limit into a hiccup mode. When pulled Low,
the output latches off, after an overcurrent event.
7,21
8
20
9,19
10,18
11,17
12,16
13,15
14
24
25
PGood
Vcc
V
OUT3
Rt
V
SEN2
, V
SEN1
Comp2, Comp1
SS2 / SD
SS1 / SD
OCSet2,OCSet1
VcH2, VcH1
HDrv2, HDrv1
PGnd2, PGnd1
LDrv2, LDrv1
V
CL
Sync
Hiccup
Figure 2 - Deadband time definition.
T
DB(TYP)
=(Deadband H_toL+Deadband L_to -H)/2
DEADBAND TIME
90%
10%
90%
10%
High Side
Driver HD
Low Side
Driver LD
Tr
Tf
Deadband
H_to_L
Deadband
L_to_H
Tr
Tf
2V
2V
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IRXXH214 | POWIRLIGHTTM REFERENCE DESIGN : COMPACT BALLAST |
| IRXXH224 | POWIRLIGHTTM REFERENCE DESIGN : COMPACT BALLAST |
| IRXXH310 | POWIRLIGHTTM REFERENCE DESIGN : COMPACT BALLAST |
| IRXXH320 | POWIRLIGHTTM REFERENCE DESIGN : COMPACT BALLAST |
| IRXXH420 | POWIRLIGHTTM REFERENCE DESIGN : COMPACT BALLAST |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IRU3146CFTR | 功能描述:IC REG CTRLR BUCK PWM VM 28TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 特色產(chǎn)品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標(biāo)準(zhǔn)包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產(chǎn)品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR |
| IRU431AL | 制造商:IRF 制造商全稱:International Rectifier 功能描述:LOW -VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR |
| IRU431ALCL3 | 制造商:IRF 制造商全稱:International Rectifier 功能描述:LOW -VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR |
| IRU431ALCL3TR | 功能描述:IC VREF SHUNT PREC ADJ SOT-23-3 RoHS:否 類別:集成電路 (IC) >> PMIC - 電壓基準(zhǔn) 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 基準(zhǔn)類型:旁路，精度 輸出電壓:5V 容差:±0.5% 溫度系數(shù):100ppm/°C 輸入電壓:- 通道數(shù):1 電流 - 陰極:80µA 電流 - 靜態(tài):- 電流 - 輸出:15mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:TO-236-3，SC-59，SOT-23-3 供應(yīng)商設(shè)備封裝:SOT-23-3 包裝:帶卷 (TR) 其它名稱:LM4040CIM3-5.0MLTRLM4040CIM3-5.0MLTR-ND |
| IRU431ALCL5 | 制造商:IRF 制造商全稱:International Rectifier 功能描述:LOW -VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。