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| 型号： | TPS54612PWPRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封装： | GREEN, PLASTIC, HTSSOP-28 |
| 文件页数： | 3/23页 |
| 文件大小： | 706K |
| 代理商： | TPS54612PWPRG4 |
TPS54611, TPS54612
TPS54613, TPS54614
TPS54615, TPS54616
SLVS400C AUGUST 2001 REVISED APRIL 2005
www.ti.com
11
LAYOUT CONSIDERATIONS FOR THERMAL
PERFORMANCE
For operation at full rated load current, the analog ground
plane must provide adequate heat dissipating area. A 3
inch by 3 inch plane of 1 ounce copper is recommended,
though not mandatory, depending on ambient temperature
and airflow. Most applications have larger areas of internal
ground plane available, and the PowerPAD should be
connected to the largest area available. Additional areas
on the top or bottom layers also help dissipate heat, and
any area available should be used when 3 A or greater
operation is desired. Connection from the exposes area of
the PowerPAD to the analog ground plane layer should be
made using 0.013 inch diameter vias to avoid solder
wicking through the vias. Eight vias should be in the
PowerPAD area with four additional vias located under the
device package. The size of the vias under the package,
but not in the exposed thermal pad area, can be increased
to 0.018. Additional vias beyond the ten recommended
that enhance thermal performance should be included in
areas not under the device package.
Connect Pin 1 to Analog Ground Plane
in This Area for Optimum Performance
Minimum Recommended Top
Side Analog Ground Area
0.3478
0.0150
0.06
0.0256
0.1700
0.1340
0.0630
0.0400
0.0180
4 PL
0.2090
0.0130
8 PL
Minimum Recommended Exposed
Copper Area for Powerpad. 5mm
Stencils May Require 10 Percent
Larger Area
0.0650
0.0500
0.0650
0.0339
0.0500
Minimum Recommended Thermal Vias: 8 x 0.013 Diameter Inside
Powerpad Area 4 x 0.018 Diameter Under Device as Shown.
Additional 0.018 Diameter Vias May Be Used if Top Side Analog Ground
Area Is Extended.
0.3820
Figure 12. Recommended Land Pattern for 28-Pin PWP PowerPAD
相关PDF资料 |
PDF描述 |
|---|---|
| TPS54615PWPR | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| TPS54612PWPR | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| TPS54616PWP | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| TPS54614PWPG4 | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| TPS54612PWPG4 | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
相关代理商/技术参数 |
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| TPS54613MPWPREP | 功能描述:直流/直流开关调节器 Mil Enh 3V-6V 6A Out Synch-Buck PWM Sw RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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