Texas Instruments’ switching noise on audio reduction using spread spectrum tech. Link here Automotive systems have many regulations and requirements, from electromagnetic interference (EMI) to thermals to functional safety, but one consideration that stands above the rest when it comes to immediate consumer dissatisfaction is audible noise. In this technical article, I’ll discuss common sources […]
Category Archives: app notes
App note: How to design an accurate DC power supply
Technical designs from Texas Instruments on accurate DC power supplies. Link here Test and measurement applications like battery test, electrochemical impedance spectroscopy and semiconductor test require accurate current- and voltage-output DC power supplies. The current and voltage control accuracy of the equipment need to be better than ±0.02% of the full-scale range over a ±5°C […]
App note: Terminations for advanced CMOS logic
App note from ON semiconductor on proper terminations when using advance CMOS logic to minimize power consumption. Link here (PDF) Advanced CMOS logic such as ON Semiconductor’s FACT® logic, has extended CMOS performance to the level of advanced bipolar technologies. While high−performance design rules that are currently utilized for bipolar designs are also applicable to […]
App note: Battery fuel gauge [Smart LiB Gauge] for 1-Cell Lithium-ion/Polymer with LC709204F
New app note from ON Semiconductor about thier LC709204F fuel gauge chip. Link here (PDF) LC709204F is a Fuel Gauge for 1−Cell Lithium−ion/Polymer batteries. It is a part of our Smart LiB Gauge family of Fuel Gauges which measure the battery RSOC (Relative State Of Charge) using its unique algorithm called HG−CVR2. The HG−CVR2 algorithm […]
App note: Industrial digital inputs with the MAX22191
App note from Maxim Integrated on their parasitically powered digital input interface chip which are used favorably on industrial applications. Link here A digital input (DI) is a circuit designed to receive a binary signal transmitted from an industrial sensor and translate that input into a reliable logic signal for a programmable logic controller (PLC) […]
App note: Designing a flyback converter with the MAX17291 micropower boost converter IC
App note from Maxim Integrated about designing isolated flyback converter using their micropower boost converter IC for auxiliary and industrial applications. Link here Flyback converters are widely used in isolated DC/DC applications because of their relative simplicity and low costs compared to alternative isolated topologies. The RS485, isolated CAN transceivers, auxiliary power supplies, etc. are […]
App note: How to multiplex a 1-Wire master into numerous channels
App note from Maxim Integrated on using only one 1-wire master on multiple 1-wire channels. Link here 1-Wire® networks are originally designed for communication with a single 1-Wire master and numerous 1-Wire slaves on a single 1-Wire bus. Preferably, a linear topology, which contains insignificant stubs, is best for a 1-Wire network. However, a star […]
App note: Detecting over-power scenarios using Maxim’s quad channel power monitors and voltage supervisors
App note from Maxim Integrated on their power monitoring and supervisory ICs. Link here It is inevitable to have a voltage protection circuit and a power monitoring circuit in any advanced electronics application such as Tablets, Smartphones and Notebooks etc. Power monitors are generally used in all applications that require to measure average power through […]
App note: Using 1-wire for flexible electro-mechanical contact applications
1-wire solution from Maxim Integrated for electro-mechanical attachment. Link here Adding electronic functionality to traditional nonelectronic peripherals and consumables is a common application requirement. This is typically driven by system requirements, including storage of calibration data, manufacturing information, or original equipment manufacturer (OEM) authentication of the peripheral, accessory, or consumable. In addition to selecting the […]
App note: How to improve ADC measurement accuracy with high input source impedance
Improving ADC accuracy a topic reviewed in this app note from Maxim Integrated. Link here Unbuffered ADCs are commonly used due to their simplicity of design. However, these ADCs have limited acquisition time and require input signals to settle within the allocated time. These ADCs must track their input signals for intervals longer than the […]
App note: dV/dt ratings for low voltage and high voltage power MOSFET
App note from Alpha & Omega Semiconductor, Inc. about the importance of voltage ramp and diode recovery dV/dt and avalanche breakdown ratings of power MOSFET. Link here (PDF) dV/dt rating is an important parameter for the ruggedness of power MOSFET. It is usually a parameter shown in high voltage Power MOSFET (BVdss ≥ 500V) datasheets, […]
App note: Reliability of the OSLON® Black Series family
App note from OSRAM about their new OSLON® series LEDs. Link here (PDF) The OSLON® Black Series family was developed particularly for applications that require maximum luminous flux with little consumption of space. The package also makes the series predestined for applications that experience high temperature fluctuations because very good solder point reliability can be […]
App note: Active cable usage with ON Semiconductor Redrivers
App note from ON Semiconductors about the need for long cables for high speed Type-C and Type-A connectors. Link here (PDF) With the increasing requirement for high speed transfer of larger bulk of data, better quality video and power delivery, change over from analog to digital videos, bi−directional transfers, it become essential to use a […]
App note: Automotive pre-regulator reference design and evaluation board overview
App note from ON Semiconductors on their various reference designs on automotive regulator topologies. Link here (PDF) ON Semiconductor provides several reference designs for automotive synchronous buck pre−regulators covering a broad range of applications such as ADAS, cluster, body and infotainment.
App note: Super Barrier Rectifier (SBR®) improves automotive supply line protection to ISO7637
App note from Diodes Incorporated on their SBR technology which can supports ISO standard supply protection. Link here (PDF) Electrical disturbances in an automotive environment present reliability and functional risks to the various electronic systems and components that may be exposed. Many modules, for example electronic control units (ECUs), have sensitive microcontrollers at their core […]
App note: AL8860Q LED driver remote mounting and LED open/short to GND protection solution
App note from Diodes Incorporated on their AL8860Q LED driver with built-in faults protection. Link here (PDF) The AL8860Q is a hysteresis mode DC-DC buck LED driver, designed for driving single or multiple series connected LEDs in automotive lamps. In some circumstances the LED string should become in fault status such as open-circuit, short-circuit, LED […]
App note: Performance comparison of 1200 V SiC MOSFET and Si IGBT Used in power integrated module for 1100 V solar boost stage
App note from ON Semiconductors comparing the performance between SiC MOSFET and Silicon IGBT in a similar and compatible power modules. Link here (PDF) This application note compares the performance of two power integrated modules (PIMs) in the boost stage of an 1100 V solar inverter. One PIM used state−of−the−art silicon 1200 V IGBT (part […]
App note: Characteristics and driving recommendations of ON Semiconductor Gen 1 1200 V SiC MOSFETs & modules
App note from ON Semiconductors on their SiC MOSFET’s key characteristics and how to drive them. Link here (PDF) Silicon carbide (SiC) is part of the wide bandgap (WBG) family of semiconductor materials used to fabricate discrete power semiconductors. Conventional silicon (Si) MOSFETs have a bandgap energy of 1.12 eV compared to SiC MOSFETs possessing […]
App note: The thermal measurement point of LEDs
App note from OSRAM on different thermal masuring locations of LEDs. Link here (PDF) When current passes through the junction area of a chip, light is emitted. Not only light is generated, but also a lot of heat. Good thermal management is a major factor for the stable performance of LEDs in applications. However, a […]
App note: Advanced bioimaging
App note from Newport about laser microscopy. Link here Optical microscopes have been instrumental in the study of the life sciences for centuries. Since the invention of the laser, many advanced bioimaging techniques using microscopy have been created with progress accelerating greatly in the last two decades. Limitations in optical penetration depth, due to the […]