908E621_08 Datasheet, PDF (56/65 Pages) Freescale Semiconductor, Inc – Integrated Quad Half-bridge and Triple High Side with Embedded MCU and LIN for High End Mirror

TYPICAL APPLICATIONS
LIN Pin
For DPI (Direct Power Injection) and ESD (Electrostatic
Discharge), it is 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 VSS)
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, it is 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 32 and Figure 33 show the recommendations on
schematics and layout level, and Table 21 indicates
recommended external components and layout
considerations.
VSUP
D1
+
C1
C2
VSUP[1:8]
VDD
VSS
L1
LIN
V1
LIN
C5
VDDA/VREFH
EVDD
C3
C4
GND[1:4]
MM908E621
EVSS
VSSA/VREFL
Figure 32. EMC/EMI recommendations
908E621
56
Analog Integrated Circuit Device Data
Freescale Semiconductor