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参数资料
| 型号： | IRPP3624-12A |
| 厂商： | International Rectifier |
| 文件页数： | 17/21页 |
| 文件大小： | 0K |
| 描述： | KIT REF DES 12A 1PH SYNC BUCK |
| 产品变化通告： | (EP) Parts Discontinuation 25/May/2012 |
| 标准包装： | 1 |
| 系列： | POWIR+™ |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 1.8V |
| 电流 - 输出： | 12A |
| 输入电压： | 10.8 ~ 13.2 V |
| 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： | IR3624，IRF7823，IRF7832Z |
| 相关产品： | IR3624MPBF-ND - IC REG CTRLR BUCK PWM VM 10-MLPD IR3624MTRPBFCT-ND - IC REG CTRLR BUCK PWM VM 10-MLPD IR3624MTRPBFTR-ND - IC REG CTRLR BUCK PWM VM 10-MLPD IRF7832ZTR-ND - MOSFET N-CH 30V 21A 8-SOIC IRF7832Z-ND - MOSFET N-CH 30V 21A 8-SOIC |
IR3624MPBF
The R DS(on)
I SET = I L ( critical ) =
R OCSet ? I OCSet
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 (3).
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.
--( 3 )
R DS ( on )
R DS ( on ) = 13 . 4 m ? ? 1 . 5 = 20 . 1 m ?
I SET ? I o ( LIM ) = 6 A ? 1 . 5 = 9 A
(50% over nominal output current)
R OCSet = R 7 = 9 K ?
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 and the MOSFET
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 capacitor directly to the drain of
the high-side MOSFET, to reduce the ESR
replace the single input capacitor with two
parallel units.
The feedback part of the system should be kept
away from the inductor and other noise sources.
The critical bypass components such as
capacitors for Vcc and Vc should be close to
respective pins. It is important to place the
feedback components include feedback resistors
and compensation components close to Fb and
Comp pins.
In multilayer PCB 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 MLPD is thermal enhanced package, based
on thermal performance it is recommended to
use 4-layers PCB. To effectively remove heat
from the device the exposed pad should be
connected to ground plane using vias.
17
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| IRPP3637-06A | 功能描述:电源管理IC开发工具 6 AMP 1 PHASE SYNC 5V IN 1.25 OUTPUT 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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