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| 型号： | IR3623MTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 24/27页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 32MLPQ |
| 标准包装： | 1 |
| PWM 型： | 电压模式 |
| 输出数： | 2 |
| 频率 - 最大： | 1.2MHz |
| 占空比： | 85% |
| 电源电压： | 8.5 V ~ 14.5 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 包装： | 标准包装 |
| 其它名称： | IR3623MTRPBFDKR |
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IR3623MPbF
Programming the Current-Limit
The Current-Limit threshold can be set by
connecting a resistor (R SET ) from drain of low
side MOSFET to the OCSet pin. The resistor
can be calculated by using equation (7).
The R DS(on) has a positive temperature
coefficient and it should be considered for the
worse case operation. This resistor must be
placed close to the IC, place a small ceramic
capacitor from this pin to ground for noise
rejection purposes.
Layout Consideration
The layout is very important when designing high
frequency switching converters. Layout will affect
noise pickup and can cause a good design to
perform with less than expected results.
Start to place the power components, make all
the connection in the top layer with wide, copper
filled areas. The inductor, output capacitor should
be close to each other as possible. This helps to
reduce the EMI radiated by the power traces due
to the high switching currents through them.
Place input capacitors as close as possible to the
power module’s input pin. Add capacitors as
I SET ? I L ( critical ) ?
R OCSet ? I OCSet
R DS ( on )
- - - - ( 7 )
necessary to reduce the ESR to desired levels.
The feedback part of the system should be kept
away from the inductor and other noise sources,
and be placed close to the IC. In multilayer PCB
R DS ( on ) ? 2 . 3 m ? ? 1 . 5 ? 3 . 45 m ?
I SET ? I o ( LIM ) ? 20 A ? 1 . 5 ? 30 A
(50% over nominal output current)
R OCSet ? R 3 ? R 4 ? 5 . 11 K ?
use one layer as power ground plane and have a
control circuit ground (analog ground), to which
all signals are referenced. The goal is to localize
the high current path to a separate loop that does
not interfere with the more sensitive analog
control function. These two grounds must be
connected together on the PC board layout at a
single point. The exposed pad of IC should be
connected to analog ground. Layout guidelines
for IP2005A can be found in the product data
sheet.
www.irf.com
January 28, 2013
24
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3624MPBF | 功能描述:IC REG CTRLR BUCK PWM VM 10-MLPD RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
| IR3624MTRPBF | 功能描述:开关变换器、稳压器与控制器 HI FREQ SYNC PWM 600kHz 5 or 12V 0.6 RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| IR3628MPBF | 功能描述:IC CTLR PWM BUCK SYNC 12-MLPD RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
| IR3628MTRPBF | 功能描述:电压模式 PWM 控制器 HI FREQ SYNC PWM 600kHz 5 or 12V 0.6 RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| IR3629 | 制造商:IRF 制造商全称:International Rectifier 功能描述:HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER WITH POWER GOOD OUTPUT |
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