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| 型号： | PIP201-12M-3,518 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 稳压器 |
| 英文描述： | 200 A SWITCHING REGULATOR, PQCC68 |
| 封装： | 10 X 10 MM, 0.85 MM HEIGHT, PLASTIC, SOT-687-1, HVQFN-68 |
| 文件页数： | 2/20页 |
| 文件大小： | 345K |
| 代理商： | PIP201-12M-3,518 |
Philips Semiconductors
PIP201-12M-3
DC-to-DC converter powertrain
Product data
Rev. 03 — 19 November 2003
10 of 20
9397 750 11942
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
The typical dissipation in each PIP201-12M as a function of output current, is given in
Figure 6. At 500 KHz and 12.5 A output current, the dissipation in each PIP201-12M
is 2.7 W. The typical thermal resistance from junction to ambient is given in Table 4.
With thermal vias and forced air cooling, the thermal resistance of each PIP201-12M
from junction to ambient is15 K/W. Assuming a maximum ambient temperature of
55
°C, the maximum junction temperature (T
j(max)) is given by:
(1)
The thermal resistance between the junction and the printed-circuit board is 5 K/W.
Therefore, the maximum printed-circuit board temperature (Tpcb(max)) is given by:
(2)
11.2 Advantages of an integrated driver
One problem in the design of low-voltage, high-current DC-to-DC converters using
discrete components, is stray inductance between the various circuit elements.
Stray inductance in the gate drive circuit increases the switching times of the
MOSFETs and causes high-frequency oscillation of the gate voltage.
Stray inductance in the high-current loop between VDDO and VSSO causes switching
losses and electromagnetic interference. In discrete designs, high-frequency electric
and magnetic elds radiate from PCB tracks and couple into adjacent circuits.
By integrating the power MOSFETs and their drive circuits into a single package,
stray inductance is virtually eliminated, resulting in a compact, efcient design.
In discrete designs, the delays in the MOSFET drivers must be long enough to
ensure no cross-conduction even when using the slowest MOSFETs. Use of an
integrated driver allows the propagation delays in the MOSFET drivers to be precisely
matched to the MOSFETs. This minimizes switching losses and eliminates
cross-conduction whilst allowing the circuit to operate at a higher frequency.
11.3 External connection of power and signal lines
A major benet of the PIP201-12M module is the ability to switch the internal power
MOSFETs faster than a DC-to-DC converter built from discrete components. This
reduces switching losses and increases system efciency but it also results in higher
transient voltages on the device supply lines (VDDO and VSSO). This is due to the high
rate of change of current (dI/dt) through the combined parasitic inductance of the pcb
tracks and the decoupling capacitors.
To minimize the amplitude of these transients, decoupling capacitors must be placed
between VDDO and VSSO, as close as possible to the device pins. Low inductance,
chip ceramic capacitors are recommended.
T
j max
()
P
tot
R
th j
a
–
()
×
T
amb
+
2.7
15
55
+
×
95.5
°C
==
=
T
pcb max
()
T
j max
()
P
tot
R
th j
pcb
–
()
×
–
95.5
2.7
5
×
–
82
°C
==
=
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PIP202-12M | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:DC to DC converter powertrain |
| PIP202-12M-2 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:DC-to-DC converter powertrain |
| PIP202-12M-2 /T3 | 功能描述:直流/直流开关转换器 TAPE7 MOSFET RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| PIP202-12M-2,518 | 功能描述:直流/直流开关调节器 TAPE7 MOSFET 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 |
| PIP20-5,08 | 功能描述:可插拔接线端子 PCB Hdr, 45 Deg, 5,08 PitchClosed End,20pole,12A,300V,Grn RoHS:否 制造商:Phoenix Contact 产品:Plugs 系列:PTS 端接类型:Spring Cage 位置/触点数量:5 线规量程:26-14 节距:5 mm 电流额定值:10 A 电压额定值:250 V 安装风格: 安装角: 触点电镀: |
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