NXP Semiconductors KW45B41Z-EVK - Page 22

NXP Semiconductors
KW45B41Z-EVKUM
KW45B41Z-EVK Board User Manual
Power source Manufacturing part
number
Power supply rail Description
Coincell battery holder
BT2 (primary option)
S8421-45R
Coincell battery holder
BT1 (DNP) (secondary
option)
SMTU2450N-LF
VBAT (3.3 V)
Note: BT1 and BT2
have overlapping
footprints (BT2 is
used by default).
Note: CAN and LIN
transceivers do not
work when using
coincell battery.
Lithium-ion/external
battery, connected
through header J8 (DNP)
S2B-PH-KL VBAT (should not
exceed 3.6 V)
• One of the three power supplies used to
produce P3V3 supply
• VBAT supply from connector J8 can also be
used to power up PMIC U2 (PCA9420UK)
MCU-Link USB
connector J14
ZX62D-B-5PA8(30)
(Hirose Electric)
FL_USB_5V0 (5 V) • One of the two supplies used to produce P5V
supply
• Provides USB1_VBUS power to MCU-Link
• Supplies power to MCU-Link 3.3 V regulator
U15
Alternative 12 V supply
from power connector J9,
CAN header J10, or LIN
header J11
P12V (12 V) • Produces P12V_VBAT supply, which is used to
produce P5V_CAN supply
• Provides 12 V power to Arduino socket power
connector J3 that can be controlled through
jumper JP33
From P12V supply P12V_VBAT (12 V) • Produces P5V_CAN supply
• Provides VBAT power to LIN transceiver U10
(TJA1027T/20)
From P12V_VBAT supply P5V_CAN (5 V) • Another power supply used to produce P5V
supply
• Supplies power to CAN transceiver U7
(TJA1057GT/3)
• One of the two power supplies for voltage
translators U5, U8, U9, and U11
From P5V_CAN / FL_
USB_5V0 supply
P5V (5 V) • Produces P5VA supply, which is used in current
measurement circuit
• Provides 5 V power to power management
integrated circuit (PMIC) U2 (PCA9420UK) that
can be controlled through jumper JP1
• Supplies power to linear voltage regulator U3
(NCP1117ST33T3G)
• Supplies power to mikroBUS socket connector
J13
• Provides 5 V power to Arduino socket power
connector J3
• Provides 5 V power to Ranger 4 socket
connector J6
• Provides direction control input to voltage
translator U5
U2 PCA9420UK (NXP
Semiconductors)
SW1_OUT: PMIC_
SW1 (default
voltage: 1.1 V,
Produces P1V1_EXT supply
Table 8. KW45B41Z-EVK power supplies
KW45B41Z-EVKUM All information provided in this document is subject to legal disclaimers. © 2023 NXP B.V. All rights reserved.
User manual Rev. 2 — 13 February 2023
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