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参数资料
| 型号： | IRDC3897 |
| 厂商： | International Rectifier |
| 文件页数： | 2/17页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL SUPIRBUCK IR3897 |
| 产品培训模块： | SupIRBuck? Family and POL Design Tools Overview |
| 标准包装： | 1 |
| 系列： | SupIRBuck™ |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 1.2V |
| 电流 - 输出： | 4A |
| 输入电压： | 12V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 600kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | IR3897 |
IRDC3897-P1V2
CONNECTIONS and OPERATING INSTRUCTIONS
A well regulated +12V input supply should be connected to VIN+ and VIN-. A maximum of 4A load should be
connected to VOUT+ and VOUT-. The inputs and output connections of the board are listed in Table I.
IR3897 has only one input supply and internal LDO generates Vcc from Vin. If operation with external Vcc
is required, then R15 can be removed and external Vcc can be applied between Vcc+ and Vcc- pins. Vin pin
and Vcc/LDO_Out pins should be shorted together for external Vcc operation.
The output can track voltage at the Vp pin. For this purpose, Vref pin is to be connected to ground (use zero
ohm resistor for R21). The value of R14 and R20 can be selected to provide the desired tracking ratio
between output voltage and the tracking input.
Table I. Connections
Connection
VIN+
VIN-
Vout+
Vout-
Vcc+
Vcc-
Enable
PGood
AGnd
Signal Name
Vin (+12V)
Ground of Vin
Vout(+1.2V)
Ground for Vout
Vcc/ LDO_Out Pin
Ground for Vcc input
Enable
Power Good Signal
Analog ground
LAYOUT
The PCB is a 4-layer board (2.23”x2”) using FR4 material. All layers use 2 Oz. copper. The PCB
thickness is 0.062”. The IR3897 and other major power components are mounted on the top side of the
board.
Power supply decoupling capacitors, the bootstrap capacitor and feedback components are located
close to IR3897. The feedback resistors are connected to the output at the point of regulation and are
located close to the SupIRBuck IC. To improve efficiency, the circuit board is designed to minimize the
length of the on-board power ground current path.
12/5/2012
2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IRDC3897-P1V2 | 制造商:IRF 制造商全称:International Rectifier 功能描述:USER GUIDE FOR IR3897 EVALUATION BOARD |
| IRDC3898 | 功能描述:电源管理IC开发工具 Design Kit 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 |
| IRDC3898-P1V2 | 制造商:IRF 制造商全称:International Rectifier 功能描述:USER GUIDE FOR IR3898 EVALUATION BOARD |
| IRDC3899 | 功能描述:电源管理IC开发工具 Design Kit 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 |
| IRDC3899-P1V2 | 制造商:IRF 制造商全称:International Rectifier 功能描述:USER GUIDE FOR IR3899 EVALUATION BOARD |
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