AN2321 Freescale Semiconductor / Motorola, AN2321 Datasheet - Page 29

• Manufacturer Part Number: AN2321
• Description: Designing for Board Level Electromagnetic Compatibility
• Manufacturer: Freescale Semiconductor / Motorola

PCB Example 2
MOTOROLA
Add 0.01 µ F and 470 µ F capacitors at the 12V supply source
(connect between 12V and GND)
Figure 29
an air conditioner.
Designing for Board Level Electromagnetic Compatibility
Freescale Semiconductor, Inc.
Figure 29. PCB Improvement — Example 2
For More Information On This Product,
shows some improvements on a typical printed circuit board used in
Go to: www.freescale.com
Add 0.01 µ F and 470 µ F capacitors at the 5V supply source
(connect between 5V and GND)
PART 3: PRINTED CIRCUIT BOARD LAYOUT TECHNIQUES
Enlarge 5V trace and connect
all 5V as close as possible
Enlarge GND trace at the MCU VSS
pins and add 0.01 µ F capacitors
between MCU VCC and VSS
Enlarge GND trace and connect
all GND as close as possible
AN2321/D
29