App note: Inductive switching for dual 24 and 36 V High-side switch families (XS4200 and XSD200)

Another app note from NXP describing the behavior of the SMARTMOS Dual 24 – 36 V high-side switch devices, at switch OFF when driving inductive loads. Link here (PDF) These intelligent high-side switches are designed to be used in 24 V systems such as trucks and busses (XS4200). They can be used in industrial (XSD200) […]

App note: Repetitive short-circuit performances of the MC12XS6 IC’s family

App note from NXP about the short-citcuit protection strategies of their MC12XS6 centralized automotive lighting drivers family IC. Link here (PDF) The MC12XS6 devices include up to five self-protected high-side switches, with its extended protection and diagnostics, to detect bulb outage and short-circuit fault conditions. Additionally, this device incorporates a pulse width modulation control module, […]

App note: MC13783 buck and boost inductor sizing

NXP’s app note on calculating inductor sizes using MC13783 PWM controller as example. Link here (PDF) The purpose of this application note is to provide a method of choosing the size of the inductors for the optimized switching regulators versus the current consumption of the application. This will allow to optimize the size and the […]

New NXP MCUXpresso Eclipse IDE v11.0

New NXP MCUXpresso Eclipse IDE v11: The V11 of the MCUXpresso IDE is again a big step forward: new Eclipse version and 64bit, updated ARM toolchain, extended debugging support for P&E and Segger in addition to the LinkServer connection. The Global Variables view now supports live variables and graphing for P&E and SEGGER in addition […]

Regaining debug access of NXP i.MX RT1064-EVK executing WFI

Erich Styger writes: Working with low power modes can be challenging. It can severely affect debugging capabilities of a microprocessor or microcontroller. I ported a FreeRTOS application using the Tickless Idle Mode to the NXP i.MX RT1064 board, and all of a sudden, the board was unresponsive to any debugger connection. Luckily the board was […]

App note: Blood pressure monitor fundamentals and design

Application note from NXP on blood pressure monitor fundamentals using their medical oriented MCUs. Link here (PDF) Arterial pressure is defined as the hydrostatic pressure exerted by the blood over the arteries as a result of the heart left ventricle contraction. Systolic arterial pressure is the higher blood pressure reached by the arteries during systole […]

App note: Using touch interface in harsh environments

Tough design and software reference from NXP of touch interface. Link here (PDF) The touch-sensing method is used to replace most of traditional tact switch inputs as a new type of human-machine interface used in home-appliance applications. However, using such kind of detection method in harsh environment is still a challenge for most of product […]

App note: Water level monitoring

A reference design from NXP about water level detection using pressure sensor. Link here (PDF) Many washing machines currently in production use a mechanical sensor for water level detection. Mechanical sensors work with discrete trip points enabling water level detection only at those points. The purpose for this reference design is to allow the user […]

App note: Embedded orientation detection using the MMA8450Q

NXP’s accelerometer chip MMA8450Q, provides orientation detection on handheld devices. Link here (PDF) This application note targets the portrait/landscape orientation detection feature which has become standard in many hand-held electronic devices. Additionally, this application note aims to explain uses as well as highlight some of the challenges of designing an embedded algorithm into the sensor. […]

App note: Thermal behavior of small-signal discretes on multilayer PCBs

App note from NXP Semiconductors about multilayer PCB as additional heatsink for flat SMD components mostly power transistors to dissipate heat. Link here (PDF) This application note illustrates how to improve the power dissipation of discrete components by using multilayer PCBs. It focuses on the impact of using larger copper areas to improve the thermal […]

App note: SD(HC)-memory card and MMC interface conditioning

An ESD and EMI protection app note(PDF) from NXP for SD and MMC memory interfaces. This document gives an overview about different ESD protection and EMI filter devices optimized for SD-memory card and MMC interfaces. These devices cover the range from 1-bit to current standard 4-bit (SD-memory card, SD 2.0) or 8-bit (MMC) high-speed memory […]

App note: How to design in and program the PCA9641 I2C arbiter

I2C arbiter chip application(PDF) from NXP. The PCA9641 is highly integrated and smart design for 2-1 I2C-bus multiplexer. It is used in a system that needs two masters sharing the same slave devices. The internal switch is programmed by the masters but it will not switch in a middle of the task once owned by […]

App note: ESD and EMC sensitivity of IC

A good beginner app note (PDF) from NXP on protecting ICs from ESD. Integrated circuits are sensitive to electrostatic discharge (a sudden and short-time flow of currents) and electromagnetic fields (at which they can be source or victim of both of it). This application note shall be understood as an introductive basic description of what […]

App note: Power losses and junction temperatures on parallel Schottkys as secondary rectifiers in flyback adapter

Parallel Schottkys performance over single Shottkys app note (PDF) from NXP This document gives an overview of power losses and the consequential junction temperature rise of two parallel Schottkys as secondary side rectifiers in flyback power adapters with up to 12.5 W output power. The focus is set on a comparison of the parallel configuration […]

App note: Sorting through the low voltage logic maze

Here’s how to guide (PDF) from NXP in choosing the right standard logic from various choices that fit your application. Digital systems are running at faster speeds, operating at lower voltages, and they are becoming more highly integrated. Many functions can be integrated into FPGAs or ASICs, however, this does not mean that generic standard […]