Test & Measurement

February 2021
Variations to Perform: Introducing 65 W USB-PD Designs

Figure 1 Block diagram of a secondary-side controlled power adapter using PAG1S and PAG1P

The continuous demand for charging devices in the shortest time is driving the charger market toward fast charging. On the one hand, the power delivered by these charges increases; on the other hand, their size is getting smaller and smaller, so it is necessary to design a higher power density. To meet the growing de
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Date:
02/28/2021

Future Facilities' 15th Version of Thermal Simulation Software
Future Facilities has launched Release 15 of its leading thermal simulation software, 6SigmaET. The latest version incorporates major developments that bring a series of new features, including enhanced views, optimized liquid cooling and one of the fastest GPU radiation calculations on the market. Release 15 will e
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Date:
02/19/2021
RTD Transmitter Added to OleumTech Instrumentation Portfolio
OleumTech announced the release of a new RTD Temperature Transmitter to its H Series line of hardwired instrumentation, available in 4-20 mA and RS485 Modbus.  The H Series RTD Transmitter is perfectly suited for mission-critical industrial applications where reliability and accuracy are of utmost im
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Date:
02/18/2021
Solar Clamp Meter Used to Test Photovoltaic Systems
Megger now offers a solar clamp meter that can measure up to 2,000 V DC and 1,500 V AC (using PVHV leads) during installation, maintenance, monitoring and testing of photovoltaic systems and standard AC or DC electrical equipment. The DCM1500S can also measure AC and DC current up to 1,500 A and offers a true RM
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Date:
02/18/2021
MLFA AEC Compliant MELFs With High Reliability
When designing high reliability applications, engineers are challenged to find a resistor that meets the electrical demands at a reasonable cost. If AEC compliance is required, the challenge is even greater. Stackpole offers engineers a solution for these applications with its MLFA Series. The MLFA is an A
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Date:
02/16/2021
High-Voltage Probe for SiC, GaN Power Conversion Testing
The HVD3220 high voltage differential probe from Teledyne LeCroy is ideal for wide-bandgap (SiC and GaN) power conversion testing at DC bus voltages from 500 to 1500 V. The HVD3220 is an addition to their HVD product series. It has 400 MHz bandwidth and a 1500 Vdc CAT III and 2000 V (DC+peakAC) CAT I rating.
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Date:
02/15/2021
Mahr Introduces New MarForm MMQ 500 Form Tester
Mahr Inc. introduced its new MarForm MMQ 500, which extends Mahr’s benchtop form tester portfolio with new levels of speed and flexibility. The MMQ 500 features optimized machine design and construction for the highest stability, precision, and speed. Powerful software enables both setup and measurement to be
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Date:
02/12/2021
Reed Relays Offer Switching of AC and DC Small Signals
Littelfuse, Inc. introduced an expanded reed relay product portfolio that extends voltage capabilities to include AC ratings, supports AC or DC loads up to 300 Vdc, and provides input/output isolation voltage 2500 VRMS. These miniature reed relays are available in single In-line (SIL) and dual-in-line (DIL) pa
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Date:
02/04/2021
Simple ADC Current Sensing

Click image to enlarge

Figure 1: External circuit schematic

Dialog Semiconductor’s SLG46855V is able to sense load current and then interface with an MCU through an I2C connection. This ADC design provides current data to an MCU or SoC via I2C and can be customized to integrate other functions with available logic, all within a small 1.6 x 2.0 mm package. It can be us
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Date:
02/01/2021
Selecting Power Inductors

Table 1

When the power supply voltage is decreased, voltage fluctuations can become more dangerous, requiring a high-performance DC-DC converter in order to operate within safe parameters. DC-DC converters can help to address these requirements, and power inductors are crucial components that affect DC-DC converters’ pe
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Date:
02/01/2021
New Converters Deserve (and get) Better Inductors

Coilcraft inductor schematic

New inductors are introduced all the time. In such an established industry as ours, it is quite natural that many new products represent small, evolutionary improvements or solve unique problems.  Occasionally, however, major generational breakthroughs do come along that challenge designers into new way
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Date:
02/01/2021