App note from Diodes Incorporated present you their solution to put a safeguard on your load from transients spikes and shorts, these load switch also do have monitoring pins in order to show the condition of the supply line. Link here (PDF) Single Channel Smart load switch provides a component and area-reducing solution for efficient […]
Category Archives: app notes
App note: Suppression of transients in an automotive environment
App note from Littelfuse about automotive electrical noises and where they came from and what to do with them in order to prevent it from going to your circuit. Link here (PDF) As the control circuitry in the automobile continues to develop, there is a greater need to consider the capability of new technology in […]
App note: An introduction to transient voltage suppression devices
App note from Littelfuse introduces you to their TVS options specifically fit to your circuit protection needs. Link here (PDF) Transient Voltage Suppression (TVS) protection devices such as shielded cables, crowbars, filters and clamping devices have been widely used for a number of years to solve EMI problems. These TVS devices can be used to […]
App note: Buck-Boost charger MOSFETs
Selecting the desired MOSFET fit for Buck-Boost for higher efficiency in power supply and battery charging section discussed in this app note from Alpha & Omega Semiconductors. Link here (PDF) The wide adoption of USB Type-C PD makes the notebook PC charger move to four MOSFET buck-boost charger topology to allow for wide range input […]
App note: Design considerations on Solid-State Relays in DC configuration
Solid-state relays uses app note by Vishay in DC application with resistive, capacitive and inductive loads. Link here (PDF) A solid-state relay (SSR) is an electronic switching device in semiconductor technology. An SSR has a high efficient GaAlAs infrared emitter on the input which is optically coupled to the high performance MOSFETs at the output. […]
App note: TJA1101B automotive Ethernet PHY
App note from NXP introducing their network solution TJA1101B to handle Ethernet in automotive environment. Link here (PDF) The TJA1101B is a 100BASE-T1 compliant Ethernet PHY optimized for automotive use cases. The device provides 100 Mbit/s transmit and receive capability over a single unshielded twisted pair cable, supporting a cable length of at least 15 […]
App note: How to calculate power losses in Gen 5 diodes
App note from Vishay which focuses on the diode’s losses present during the forward and reverse condition. Link here (PDF) In the forward condition, diodes carry the current while showing the lowest resistance at the current flow (ON state) and the lowest possible voltage anode to cathode. In the reverse condition, the voltage anode to […]
App note: NTC Thermistors
App note from Vishay on their NTC thermistors, guiding you on the selection process to its application circuits. Link here (PDF)
App note: Extending op amp operating range via bootstrapping
App note from Analog Devices discussing bootstrapping its rail voltage to compensate operating range of an op amp. Link here (PDF) When an off the shelf operational amplifier (op amp) cannot provide the signal swing range needed for a particular application, the engineer is faced with using a high voltage op amp or designing a […]
App note: The effect of long-term drift on voltage references
App note from Analog Devices on ways to eliminate drifts on voltage refs. Link here (PDF) Long-Term Drift (LTD) in voltage references is a parameter that can be confusing and misleading. It is given as a typical parameter in data sheets, but can cause significant accuracy limitations in system. Unlike tempco and initial accuracy, where […]
App note: Small, simple, PWM buck controller can replace high current LDOs
Compact buck converter design from ONSEMI an alternate solution for LDOs producing larger current. Link here (PDF) Low dropout, linear regulators, or LDOs, are typically used for post−regulation because they are easily implemented and provide a relatively noise−free power source. However, for higher currents, such as 1.0 A and above, LDOs take up a great […]
App note: Isolated precision regulation of a single 1.8 Volt output from a universal line input
Isolated precision SMPS design from ONSEMI. Link here (PDF) The following Application Note describes an off–line switching power supply utilizing a precision programmable reference to regulate a 1.8 volt output. The center of the app note is the MC33363B, a monolithic SMPS controller with a 700 volt power switch, and the NCP100, a sub–one volt […]
App note: USB power delivery changes the game
Great read on this white paper from Renesas about the history of USB power delivery. Link here (PDF) Connections between equipment for data transfer and power are being revolutionized by the adoption of ‘USB Power Delivery’, a version of USB that allows up to 100W to be passed in either direction. This white paper traces […]
App note: An introduction to inductor specifications
Coilcrafts’s app note on inductor and more to it than just inductance. Link here (PDF) There is more to selecting an inductor than the nominal inductance value. To ensure the inductor will perform as needed in a specific application, due consideration must be given to inductance tolerance, current ratings, DCR, maximum operating temperature and efficiency […]
App note: Multi-source power management design
Design tips from Richtek when sourcing/selecting parts for power supply. Link here The COVID pandemic has made it clear that the semiconductor supply chain is very sensitive to sudden changes in supply and demand, resulting in worldwide shortage of semiconductors in all fields, from consumer to automotive applications. Many company production lines had to reduce […]
App note: Low cost 8W off-line LED driver using RT8487
App note from Richtek on their RT8487 compact buck-boost LED driver. Link here RT8487 is a boundary mode constant current controller with internal high side driver, which can be used in buck and buck-boost configuration, to provide a constant output current to the (LED) load. It contains special circuitry for achieving high power factor and […]
App note: Integrated power supply solution for vehicle tracking system
This evaluation board from Analog Devices features reliable and uninterruptible power supply for vehicle tracking system. Link here (PDF) A vehicle tracking system (VTS) is typically installed in cars and trucks. A VTS provides real-time information about the speed, location, and direction of the vehicle using technology, such as a global positioning system (GPS). For […]
App note: Using an accelerometer for inclination sensing
Application note from Analog Devices to calculate for inclination angle from a single, dual or triple-axis accelerometers. Link here (PDF) One common method for determining the tilt or inclination of a system is to integrate the output of a gyroscope. Although this method is straightforward, error associated with null bias stability can quickly compound as […]
App note: Vibration motor best practices from mobile/cell phones
App note from Precision Microdrives on how to design drivers for vibration motors on battery powered mobile devices. Link here The mobile phone industry is a huge market in which vibration motors are an established component. Now almost every device has the ability to produce vibration alerts and the field of haptic feedback is rapidly […]
App note: Implementing secure boot with the Atmel ATSHA204
Securing systems with cryptographic authentication device on boot discussed in this app note from Microchip/Atmel. Link here (PDF) Most systems that use programmable nonvolatile memory for their operating program whether it’s large or small can take advantage of a secure boot process. Secure boot is a method of ensuring that the operating program for a […]