Freescale Semiconductor MPC5748G EVB, User Manual

Page: 73 / 88

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
Capacitor Types:
470pF - Ceramic COG, 50v 5% 0402
1000pF - Ceramic COG, 50V 5% 0402
4700pF - Ceramic X7R, 50V 10% 0402
0.01uF - Ceramic X7R, 50V 10% 0402
0.1uF - Ceramic X7R, 16V 10% 0402
0.68uF - Ceramic X7R 16V 10% 0805 (Murata GCM219R71C684KA37 )
1.0uF - Ceraminc X7R, 10V 10% 0603 (Taiyo Yuden LMK107B7105KA-T)
2.2uF - Ceraminc X7R, 10V, 10%, 0603 (Taiyo Yuden LMK107B7225KA-TR)
4.7uF - TANT, 12.5V 20% ESR=0.08R 7343
10uF - TANT, 35V 10% ESR=0.125R CC7343-31
4.7uF Alternative (150-78844)- Polymer ALU, 16V 20% ESR=0.08R
7343-18
Place small Caps as close as possible to MCU pins
ADC
Place small caps close to each MCU pin
VDD_HVA VDD_HVB
VDD_LV
See caps below for Bypass Transistor bulk storage (some on VDD1V2 rail)
VDD_LV (1.25V) Decoupling. Place
as close as possible to pin.
Ballast Transistor
Flash
MPC5748G MCU Decoupling and bulk storage
LP Internal Reg Cap
Place
close to
transistor
Place one 0.68uF cap footprint
each side of package
Place 10uF cap to west side of package
(low ESR)
(low
ESR) (low
ESR)
(Murata GCM219R71C684KA37)
(low
ESR) (low
ESR) (low
ESR)
(low
ESR) (low ESR)
2.2uF caps
are DNP.
Place close
to emitter
One of these is DNP. May replace 2 caps with
0.47uF to keep overall capacitance within limits
Differences to 324BGA
- 2 Fewer VDD_HV_A capacitor pairs
- 1 fewer VDD_HV_B capacitor pair
- No VDD_HV_C capacitor pairs
- 5 fewer VDD_LV capacitor pairs
ADC0_CAP
ADC0_GND
ADC1REF_CAP
ADC1_GND
ADC1_CAP
ADC1_GND
GND
HVA_CAP
GND
HVB_CAP
LV_CAP
GND
HVFLA_CAP
GND
LV_CAP B_CAP E_CAP
GND
LVDEC_CAP
GND
E_CAP
GND
Drawing Title:
Size Document Number Rev
Date: Sheet of
Page Title:
Automotive Microcontroller
Applications
East Kilbride, Scotland
SCH-27898 PDF: SPF-27898 D1
MPC5748G 176 QFP Daughter Card
B
Tuesday, August 18, 2015
MPC5748G MCU Decoupling
3 8
Freescale General Business Use
Drawing Title:
Size Document Number Rev
Date: Sheet of
Page Title:
Automotive Microcontroller
Applications
East Kilbride, Scotland
SCH-27898 PDF: SPF-27898 D1
MPC5748G 176 QFP Daughter Card
B
Tuesday, August 18, 2015
MPC5748G MCU Decoupling
3 8
Freescale General Business Use
Drawing Title:
Size Document Number Rev
Date: Sheet of
Page Title:
Automotive Microcontroller
Applications
East Kilbride, Scotland
SCH-27898 PDF: SPF-27898 D1
MPC5748G 176 QFP Daughter Card
B
Tuesday, August 18, 2015
MPC5748G MCU Decoupling
3 8
Freescale General Business Use
C25
0.1UF
C9
2.2UF
DNP
C43
1000pF
C46
1000pF
C40
1.0 UF
C47
0.1UF
C35
0.1UF
C28
0.68uF
DNP
C42
0.1UF
+
C2
10UF
C45
0.1UF
C44
1.0 UF
C29
0.1UF
C7 4700pF
C32
1000pF
+
C1
10UF
DNP
C34
1000pF
C8
2.2UF
DNP
+
C3
10UF
DNP
C22
0.1UF
C48
470pF
+
C4
10UF
DNP
C21
0.68uF
C27
470pF
C41
1000pF
C30
0.68uF
C26
0.1UF
C23
470pF
C37
0.1UF
C50
0.1UF
C31
2.2UF
LMK107B7225KA-T
C20
0.1UF
C49
0.68uF C36
1uF
LMK107B7105KA-T
C33
1.0 UF
C24
1000pF