NXP Semiconductors
S32K3X4EVB-Q257 | S32K3X4EVBQ257ND
HWUM
Hardware User Manual
S32K3X4EVB-Q257 HWUM
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NXP Semiconductors
REV B
– 9/2021
Page
14
of
36
7.5.1 S32K3X4EVB-Q257
– VDD_HV_B
Figure 9. S32K3X4EVB-Q257 | S32K3X4EVBQ257ND
– Main power supply
Table 7. S32K3X4EVB-Q257
– VDD_HV_B
Reference
Jumper Position
Description
Comments
J30
1-2
P5V0 (+5.0V Switching Power Supply) is selected for the
VDD_HV_B_MCU reference
3-4
P3V3_DC_SW (+3.3V Switching Power Supply) is
selected for the VDD_HV_B_MCU reference
5-6
VDD_HV_A_MCU is routed to VDD_HV_B_MCU
reference
Default closed
OPEN
VDD_HV_B domain is isolated and unpowered
CAUTION - 2 or more connections/jumpers in this header selector is NOT ALLOWED
J29
1-2
The shunt resistor R74 [0.2 Ohms] is selected for current
measurement proposals on the VDD_HV_B_MCU
reference
J29
HDR TH 1X3
1
2
3
J31
HDR 1X2
1
2
P3V3
Jumper Config:
1-2 -- CLOSED
[Default Position]
VDD_HV_B_MCU
P5V0
VDD_HV_B
Jumper Config:
3-4 -- CLOSED
[Default Position]
Jumper Config:
2-3 -- CLOSED
[Default Position]
VDD_HV_B
SENSE
RESISTOR:
0.2 mOhm
J30
SILK = VDD_HV_B
1
2
3
4
6
5
TP78
VDD_HV_B_MCU
1
C86
0.1uF
0402
R74
0.2 OHM
VDD_HV_B
S32K2XX Secondary I/Os Supply
Voltage Domain
R75
1
VDD_HV_A_MCU
VDD_HV_B_MCU