The best way to build a PCB first time right with KW45 (Automotive) or K32W1/MCXW71 (IoT/Industrial)

[christophe_menard]

Please, find the important link to build a PCB using a KW45 or K32W1 & MCX W71 and all concerning the radio performances, low power and radio certification (CE/FCC/IC).

KW45 product NXP web page:

https://www.nxp.com/products/wireless/bluetooth-low-energy/32-bit-bluetooth-5-3-long-range-mcus-with...

K32W1 product NXP web page:

https://www.nxp.com/products/wireless/multiprotocol-mcus/tri-core-secure-and-ultra-low-power-mcu-for...

MCX W71 product NXP web page:

https://www.nxp.com/products/processors-and-microcontrollers/arm-microcontrollers/general-purpose-mc...

KW45-EVK getting started NXP web page:

https://www.nxp.com/products/processors-and-microcontrollers/kw45b41z-evaluation-kit-with-bluetooth-...

https://www.nxp.com/document/guide/getting-started-with-the-kw45b41z-evaluation-kit:GS-KW45B41ZEVK

K32W1-EVK getting started NXP web page:

https://www.nxp.com/products/processors-and-microcontrollers/k32w148-evaluation-kit-with-multiprotoc...

https://www.nxp.com/document/guide/getting-started-with-the-k32w148-development-platform:GS-K32W148E...

FRDM-MCXW71 / MCXW71-EVK getting started NXP web page: 

https://www.nxp.com/document/guide/getting-started-with-frdm-mcxw71:GS-FRDM-MCXW71

HARDWARE

    KW45-EVK HW guideline: Hardware Design Considerations for KW45B41Z and K32W148 Bluetooth LE Devices (nxp.com)

    MCXW W71 HW guideline: MCXW71 Hardware Design Guide

    KW45B41Z-EVK User Manual https://www.nxp.com/docs/en/user-manual/KW45B41Z-EVKUM.pdf

    K32W1-EVK User Manual: K32W148-EVK Board User Manual (nxp.com)

    FRDM-MCXW71 USer Manual: FRDM-MCXW71 Board User Manual

     Minimum BoM (attached file)

    DCDC management guide (AN13831): 'NXP account required to access this content KW45/K32W148 - Power Management Hardware[AN13831]' from https://www.nxp.com/products/KW45

    Migration guide: KW38 to KW45: Available on demand

    Design-In check list: excel file attached

    RF matching: S parameters (attached file)

    ESD: Please note as raised in the KW45 datasheet, the ElectroStatic Discharge of the RF antenna pin is +/-250V (change-device model). In case the targeted system need to pass larger ESD target then an external ESD diode is recommended. The following reference are foressen as acceptable : Nexperia PESD5V0C1BLS-Q, littlefuse SP3522-01ETG, SPSEMI AUSD05CBL.

IMPORTANT Information; launch prototype before production platform to fine tune RF path:

“As RF behavior are dependent of PCB layout & manufacturing; PCB prototypes (based on NXP recommendations) will have to be fine-tuned to insure the expected qualified in RF is reached on the final productized platform.”

RADIO

    RF report: KW45 and K32W148 RF System Evaluation Report for Bluetooth LE and K32W148 for 802.15.4 Applications ...

FRDM-MCXW71 RF System Evaluation Report for Bluetooth LE and IEEE 802.15.4 Applications

    Radio co-existence: Kinetis Wireless Family Products Bluetooth Low Energy Coexistence with Wi-Fi Application (nxp.com)

    Distance performances: refer to attached file

    Antenna:

Compact Planar Antennas for 2.4 GHz Communication Designs and Applications within NXP EVK Boards

Antennas for Channel Sounding Applications

    Generic FSK Link Layer Quick Start (attached file)

    BLE connectivity test binary file:  SDK_x_xx_x_KW45B41Z-EVK\boards\kw45b41zevk\wireless_examples\genfsk\connectivity_test\bm\iar\

    K32W148 Connectivity Test for 802.15.4 Application (nxp.com)

    Return loss (S11) measurement: How to measure the return loss of your RF matching (S11)

                   part of the RF report (AN13728)

    Loadpull: Kinetis KW45 and K32W148 Loadpull Report (nxp.com)  ; MCX W71 Loadpull Report

SW tools:

    IoT Tool box (mobile application)

    Connectivity test tool for connectivity products (part of the IoT toolbox)

    DTM: How to use the HCI_bb on Kinetis family products a... - NXP Community

https://community.nxp.com/t5/Wireless-Connectivity-Knowledge/BLE-HCI-Application-to-set-transmitter-...

CRYSTAL 

Article 1 : KW45/K32W1 32MHz & 32kHz Oscilllation margins - NXP Community

Article 2 : KW45/K32W1 32MHz & 32kHz Oscilllation margins

32kHz crystal-less application note

KW36 - Trimming adjust of 32MHz XTAL external osci... - NXP Community

KW45 / MCX W71 - Trimming adjust of 32MHz & 32kHz external crystals - NXP Community

LOW POWER

  Estimator Tool

https://community.nxp.com/t5/Wireless-Connectivity/Kinetis-KW35-38-KW45-amp-K32W1-MCXW71-Power-Profi...

KW45_WK47_MCXW71_MCXW72_BLE_power_profile_calculator_v1.34.xlsx

MCX W7x 802.15.4 Matter ICD SIT LIT & ZED Power profile v0.6.xlsx

    Low Power Consumption: https://www.nxp.com/docs/en/application-note/AN13230.pdf

    MCX W71 Bluetooth LE Power Consumption Analysis

AN MCX W72 802.15.4 Matter and Zigbee Power profile analysis.pdf

CERTIFICATION

KW45	European Union Declaration of Conformity for KW45B41Z-EVK Evaluation Kit European Union Declaration of Conformity for KW45B41Z-LOC
K32W148	European Union Declaration of Conformity for K32W148-EVK Evaluation Kit

[xing_chang]

Hi @christophe_menard ，

In the checklist, we should add a check on the external watchdog, note that if the customer uses the OTA function, when upgrading the firmware, the time required after reset may reach a few seconds, which requires special attention from the external watchdog.

[suleymansekerci]

Does anyone help me to about the value of power consumption for KW54 in three modes( PMIC, DCDC, Bypass) ?

[christophe_menard]

Hi Suleymansekerci,

Could you precise your request about the three modes( PMIC, DCDC, Bypass), please?

For your help, you could refer to the AN13230 Kinetis KW45 & K32W1 Bluetooth LE Power Consumption Analysis available in NXP site and playing with the KW45_BLE_power_profile_calculator_v1.5.xlsx file.

For your guidance, the most safe power is the buck mode (DCDC inside the Kinetis product)  for sure without any extra BoM cost. 

[suleymansekerci]

Dear Menard,

Thanks  for your reply.

BR

[christophe_menard]

Hi Marko,

The added components are not the same on the 3 use cases.

[christophe_menard]

Hi Marko,

The valus are correct. The added components are not the same on the 3 use cases.

[marko_pavlin]

Hi, I am looking the "minimum BOM" document. At the end, there is a table with con-cell operation recommendation:

Is this OK? 10dBm <1mA, ... 0dBm : 4,5mA ?