參數(shù)資料
型號: 908E425
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述: Integrated Quad Half H-Bridge with Power Supply, Embedded MCU, and LIN Serial Communication
中文描述: 綜合四半僅符合電源橋,嵌入式微控制器和LIN串行通信
文件頁數(shù): 41/49頁
文件大?。?/td> 490K
代理商: 908E425
Analog Integrated Circuit Device Data
Freescale Semiconductor
41
908E425
TYPICAL APPLICATIONS
EMC/EMI RECOMMENDATIONS
This paragraph gives some device specific
recommendations to improve EMC/EMI performance.
Further generic design recommendations can be e.g. found
on the Freescale web site www.freescale.com.
VSUP PINS (VSUP1:VSUP3)
Its recommended to place a high-quality ceramic
decoupling capacitor close to the VSUP pins to improve
EMC/EMI behavior.
LIN PIN
For DPI (Direct Power Injection) and ESD (Electro Static
Discharge) its recommended to place a high-quality ceramic
decoupling capacitor near the LIN pin. An additional varistor
will further increase the immunity against ESD. A ferrite in the
LIN line will suppress some of the noise induced.
VOLTAGE REGULATOR OUTPUT PINS (VDD AND
AGND)
Use a high-quality ceramic decoupling capacitor to
stabilize the regulated voltage.
MCU DIGITAL SUPPLY PINS (EVDD AND EVSS)
Fast signal transitions on MCU pins place high, short-
duration current demands on the power supply. To prevent
noise problems, take special care to provide power supply
bypassing at the MCU. It is recommended that a high-quality
ceramic decoupling capacitor be placed between these pins.
MCU ANALOG SUPPLY PINS (VREFH, VDDA AND
VREFL, VSSA)
To avoid noise on the analog supply pins its important to
take special care on the layout. The MCU digital and analog
supplies should be tied to the same potential via separate
traces and connected to the voltage regulator output.
Figure 25
and
Figure 26
show the recommendations on
schematics and layout level and
Table 13
indicates
recommended external components and layout
considerations.
Figure 25. EMC/EMI recommendations
MM908E625
VREFL
VDDA
EVDD
VDD
EVSS
VSS
VSUP1
GND1
V
SUP
+
VREFH
VSSA
VSUP2
LIN
LIN
C1
C2
D1
C3
C4
C5
L1
V1
VSUP3
GND2
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908E621 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Quad Half-Bridge and Triple High-Side with Embedded MCU and LIN for High End Mirror
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