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参数资料
| 型号： | IRDC3146 |
| 厂商： | International Rectifier |
| 文件页数： | 1/30页 |
| 文件大小： | 0K |
| 描述： | KIT REFERENCE DESIGN W/IRU3146 |
| 标准包装： | 1 |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 2，非隔离 |
| 功率 - 输出： | 43W |
| 输出电压： | 1.8V，2.5V |
| 电流 - 输出： | 10A，10A |
| 输入电压： | 4.5 ~ 16 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 300kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | IRU3146 |
| 其它名称： | *IRDC3146 |
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NOT RECOMMENDED FOR NEW DESIGN
Design Recommendation
IR3621
Data Sheet No.PD 94702 revA
IRU3146
DUAL SYNCHRONOUS PWM CONTROLLER WITH
CURRENT SHARING CIRCUITRY AND AUTO-RESTART
FEATURES
Dual Synchronous Controller with 180 out-of-phase
Configurable to 2-Independent Outputs or 2-Phase
Single Output
Current Sharing Using Inductor's DCR
Current Limit using MOSFET's R DS(ON)
Hiccup/Latched Current Limit
Latched Over-Voltage Protection
Vcc from 4.5V to 16V Input
Programmable Switching Frequency up to 500KHz
Two Independent Soft-Starts/ Shutdowns
0.8V Precision Reference Voltage Available
Power Good Output
External Frequency Synchronization
APPLICATIONS
Embedded Computer Systems
Telecom Systems
Point of Load Power Architectures
DESCRIPTION
The IRU3146 IC combines a Dual synchronous Buck
controller, providing a cost-effective, high performance
and flexible solution. The IRU3146 can configured as 2-
independent or as 2-phase controller. The 2-phase con-
figuration is ideal for high current applications. The
IRU3146 features 180 out of phase operation which re-
duces the required input/output capacitance and results
to few number of capacitor quantity. Other key features
offered by this device include two independent program-
mable soft starts, programmable switching frequency up
to 500KHz per phase, under voltage lockout function.
The current limit is provided by sensing the lower
MOSFET's on-resistance for optimum cost and perfor-
mance.
2-Phase Power Suppl y
Graphic Card
DDR Memory Applications
D1
C12
12V
C11
C3
C4
V CL VcH1 V OUT3 VcH2
C13
C14
C5
Vcc
HDrv1
OCSet1
R1
Q2
L3
LDrv1
PGnd1
IRU3146
Comp1
R2
C8
C9
R3
R4
Hiccup
Sync
V REF
Comp2
Rt U1
V P2
V SEN1
V SEN2
Fb1
Fb2
HDrv2
OCSet2
R6
Q3
D2
BAT54A
C17
Q4
R5
R9
L4
C15
C18
R10
R11
R7
R8
1.8V @ 30A
C16
PGood
C10
PGood
SS1 / SD
SS2 / SD
LDrv2
PGnd2
Gnd
Q5
Figure 1 - Typical application of IRU3146 in 2-phase configuration with inductor current sensing
PACKAGE ORDER INFORMATION
DEVICE
IRU3146CF
PACKAGE
28-Pin TSSOP (F)
Rev. 1.1
6/25/04
www.irf.com
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IRDC3146EVAL | 制造商:IRF 制造商全称:International Rectifier 功能描述:IRU3146 EVALUATION BOARD USER GUIDE |
| IRDC3473 | 功能描述:电源管理IC开发工具 9999V 999A POL IC RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| IRDC3475 | 功能描述:电源管理IC开发工具 9999V 999A POL IC RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| IRDC3476 | 功能描述:电源管理IC开发工具 9999V 999A POL IC RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| IRDC3477 | 功能描述:电源管理IC开发工具 9999V 999A POL IC RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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