NXP Semiconductors KW45B41Z-EVK - Clocks

NXP Semiconductors
KW45B41Z-EVKUM
KW45B41Z-EVK Board User Manual
Inductor type
Manufacturer
Part number
Value
Automotive
qualified
AEC-Q200
ESR
(Ω)
Isat
(mA)
Maximum
DC current
(mA)
Temperature
range (°C)
Size
(LxWxH) mm
SMD shielded
Multilayer ferrite
1 μH
TDK
MLZ2012A1R0WTD25
Yes 0.13 280 900
-55 to +125
SMD shielded
Multilayer ferrite
1 μH
TDK
MLZ1608A1R0WTD25
Yes 0.15 190 600
-55 to +125
1.6x0.8x0.8
SMD shielded
Thin film Metal core
1 μH
TDK TFM2016ALMA1R0MTAA Yes 0.05 3400 3700
-55 to +125
2x1.6x1
Wound (Metal)
1 μH
Murata
DFE322512F-1R0M
Yes 0.032 4800
-40 to +125
3.2x2.5x1.2
SMD shielded
Multilayer ferrite
1 μH
Murata
LQM18PH1R0MFRL
Yes 0.29 600 950
-40 to +125
1.6x0.8x0.5
SMD shielded
Multilayer ferrite
1 μH
Murata
LQM21PH1R0NGCD
Yes 0.1–0.13 200
-40 to +125
2x1.25x0.9
Chip coil
1 μH
Murata
LHQ3NPH1R0MM
Yes 0.03 2350 3000
-40 to +125
3x3x1.4
Chip coil
1 μH
Murata
LQW21FT1R0M0H
Yes 0.13 700 700
-40 to +125
2x1.2x1.6
SMD shielded
Multilayer ferrite
1 μH
Chilisin
AKPB001608DZ1R0MA2
Yes 0.2 200 700
-40 to +125
1.6x0.8x0.8
SMD shielded
Multilayer ferrite
1 μH
Chilisin
AKPB002012101R0MA2
Yes 0.12 650 1200
-40 to +125
2x1.25x1
SMD shielded
Multilayer ferrite
1 μH
Chilisin
AKPB002016101R0MA6
Yes 0.085 850 1300
-40 to +125
2x1.6x1
T-core
1 μH
Cyntec
VCTA20161B-1R0MS6
Yes 0.041–0.048 3100 3800
-55 to +165
2x1.6x1.2
Wound shielded
1 μH
Wurth
78 438 336 010
Yes 0.032 4000 5000
-40 to +125
3x3x2
2.2x1.45x1.05
Figure 11. DC-DC inductor options
Choosing right DC-DC inductor for your target board is very important. While selecting a DC-DC inductor, look
for the following specifications:
• Inductor value: 1 µH or 1.5 µH
• ESR: < 0.3 Ω
• Saturation current (Isat): > 300 mA
• Self-resonant frequency: > 50 MHz
2.2 Clocks
Table 11 describes the clocks available on the KW45B41Z-EVK board.
Clock generator Clock Frequency Destination
Y1: Crystal (NX1612SA 32MHZ EXS00A
CS14160)
[XTAL, EXTAL]_32M 32 MHz Target MCU (KW45B41Z)
Y2: Crystal (NX2012SE 32.768kHz
EXS00A-MU01517)
XTAL32K / EXTAL32K 32.768 kHz Target MCU
Y3: Temperature compensated crystal
oscillator (TCXO) (NT2016SB-32MHZ-
NSA3561B) (DNP)
EXTAL_RF 32 MHz Target MCU
Y4: Crystal MCU_LINK_[P, N]_16MHz 16 MHz MCU-Link (LPC55S69)
Table 11. KW45B41Z-EVK clocks
In the KW45B41Z-EVK board, the target MCU requires the following two clocks:
• 32 MHz clock (with ±30 ppm accuracy): Provides clock inputs to the Arm Cortex-M33 core and 2.4 GHz radio
• 32.768 kHz clock: Provides an accurate low-power timebase and acts as real-time clock (RTC) and low-power
RF clock
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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