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The R&S UDS series of digital multimeters (DMMs) offers 5.5-digit and 6.5-digit resolution, with the 6.5-digit model delivering a basic DC accuracy of 0.0075%. Replacing the HMC8012, the UDS DMMs provide higher accuracy and an updated user interface to simplify testing.

Streamlining test workflows, UDS models can display up to three measurements simultaneously—such as DC, AC, and statistical data—on a 3.5-inch OVGA color display. They support voltage ranges up to 1000 VDC and 750 VAC, with a current capacity of 10 A.

With a wide range of measurement functions and remote-control interfaces, the multimeters are well-suited for troubleshooting, component testing, and system validation. They also fit well in teaching labs and production environments. In addition to 12 standard measurement functions, the units offer statistical and math capabilities. Interfaces include USB, Ethernet LAN, and IEEE 488 (GPIB) for SCPI-based control.

Configure and request a quote for the UDS digital multimeter using the product page link below.

UDS series product page

Rohde & Schwarz 

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Infineon’s radiation-hardened GaN HEMT is the first in-house manufactured device qualified to the Joint Army Navy Space (JANS) MIL-PRF-19500/794 specification—the highest quality certification issued by the U.S. Defense Logistics Agency (DLA). The company’s new family of radiation-hardened CoolGaN transistors is designed for mission-critical applications in on-orbit spacecraft, manned missions, and deep space probes.

The first three devices in the GaN lineup are 100-V, 52-A transistors with a typical RDS(on) of 4 mΩ and a total gate charge of 8.8 nC. Housed in hermetically sealed ceramic surface-mount packages, they are hardened against Single Event Effects (SEE) up to a Linear Energy Transfer (LET) of 70 MeV·cm²/mg using gold (Au) ions. Two of the devices, while not JANS certified, are screened to Total Ionizing Dose (TID) levels of 100 krad and 500 krad. The third device, also screened to 500 krad, meets the rigorous JANS MIL-PRF-19500/794 qualification.

Engineering samples and evaluation boards are available now, with the final JANS-qualified device set for release in summer 2025. Additional JANS parts will launch soon, expanding the range of available voltage and current ratings. For more information on Infineon’s rad-hard GaN transistors, click here.

Infineon Technologies 

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The EA-BIM 20005 battery impedance meter from Tektronix uses electrochemical impedance spectroscopy (EIS) across 20 channels to characterize Li-Ion battery cells. With industry-standard interfaces and a compact 19-in., 3U form factor, it integrates easily into automated battery test systems.

EIS testing provides deep insight into cell quality. Offering broad-frequency capabilities from 1 mHz to 10 kHz and AC stimulus up to 10 A (peak-to-peak), the EA-BIM-20005 supports comprehensive analysis of battery cell behavior under varying conditions. It is well-suited for cylindrical, pouch, and prismatic cells.

Each of the meter’s 20 EIS channels is paired with a 4-wire PT100 temperature channel, enabling simultaneous tracking of impedance and cell temperature. An integrated DC power supply delivers up to ±1 A at 5 V for EIS measurements during cell charging and discharging. Included PC software offers built-in visualizations and analysis tools, while connectivity is provided via a USB port and two CAN bus interfaces.

Access the datasheet and request a quote for the EA-BIM 20005 battery impedance meter using the product page link below.

EA-BIM 20005 product page 

Tektronix

The post Multichannel impedance meter analyzes Li-Ion cells appeared first on EDN.

Two integrated gate drivers from ST provide programmable current control for driving three-phase brushless motors in consumer and industrial equipment. Operating from 6 V to 50 V, the STDRIVE102H supports single-shunt control, while the STDRIVE102BH handles three-shunt control—both configured via two analog pins. Each device can source up to 1 A and sink up to 2 A.

A simple resistor divider programs the gate-drive current, allowing the triple half-bridge drivers to control six external N-channel MOSFETs. This helps optimize power stage performance, including control of switching slew rate, without the need for discrete gate resistors. An integrated charge pump powers the three high-side drivers, enabling continuous on-time for the high-side MOSFETs.

To accelerate development with the STDRIVE102H and STDRIVE102BH gate drivers, the EVLDRIVE102H and EVLDRIVE102BH evaluation boards support field-oriented and six-step control, featuring onboard back-EMF sensing and inputs for position sensors. Standard headers connect to STM32 Nucleo boards, and the X-CUBE-MCSDK toolkit provides the necessary software and code.

The STDRIVE102H and STDRIVE102BH are available in 5×5-mm or 6×6mm QFN packages, priced from $1.20 each in lots of 1000 units.

STDRIVE102H product page 

STDRIVE102BH product page

STMicroelectronics

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Comtrend’s PM-1540 powerline data module uses MaxLinear’s G.hn (data-over-powerline) chips to support backend communication in EV charging stations. It transmits data from power meters over existing electrical wiring, eliminating the need for dedicated communication cables, and can also extend connectivity to backend systems in data centers or smart parking environments.

By leveraging existing electrical wiring, the PM-1540 delivers lower latency, higher speeds, and more stable performance than conventional methods. It enables real-time connectivity while reducing costs compared to LAN, Wi-Fi, or 4G systems. The module supports up to 250 nodes within the same powerline domain and transmits signals over distances up to 700 meters, with up to 16 levels of signal repetition for extended reach.

MaxLinear’s G.hn baseband processors and analog front-end chipsets provide reliable, low-latency connectivity over existing wiring, delivering physical data rates up to 2 Gbps with full ITU compliance. Their support for Quality of Service (QoS) and broad media compatibility—including powerline—makes them well-suited for EV charging infrastructure, enabling seamless interoperability and cost-effective deployment.

For detailed information on Comtrend’s PM-1540 G.hn powerline module, click here. An overview of MaxLinear’s G.hn solutions can be found here.

Comtrend

MaxLinear

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Пам’яті Старостіна Максима Олександровича KPI4U-1 чт, 06/05/2025 - 16:50

📰 Газета "Київський політехнік" № 23-24 за 2025 (.pdf) Інформація КП чт, 06/05/2025 - 16:40

КПІ ім. Ігоря Сікорського — Почесний освітній партнер Huawei kpi чт, 06/05/2025 - 15:18

According to a report by Nikkei, Renesas Electronics Corp of Tokyo, Japan is abandoning its plans to produce silicon carbide (SiC) power semiconductors for electric vehicles (EVs), due to slowing growth in the EV market — coupled with a supply glut driven by increased production from Chinese manufacturers — that has led to falling prices...

На війні загинув випускник нашого університету Листопад Володимир Анатолійович kpi чт, 06/05/2025 - 14:36

Swansea University has signed a deal that makes Space Forge Ltd of Cardiff, South Wales, UK (which is pioneering space-based advanced materials manufacturing via fully returnable satellites) the first firm to be physically hosted in the Centre for Integrative Semiconductor Materials (CISM), where it will undertake work on manufacturing in micro-gravity. Space Forge will be CISM’s first incubation client with a dedicated cleanroom incubation bay and access to a full suite of semiconductor processing and characterization tools...

USB Power Delivery (USB-PD) now offers faster, more efficient, and more versatile power handling solutions. As we can all see, it’s an exciting advancement that significantly enhances the capabilities of USB connections.

This mechanism uses the USB configuration channel (CC) to allow a device to request a specific voltage. While this might seem complex at first, it’s pretty easy to utilize in practice.

Figure 1 The module has several jumpers to set the DC output voltage at multiple levels. Source: Author

What makes it easy nowadays is that we can buy compact USB-PD Trigger/Decoy modules that do the complicated background tasks for us (Figure 1). You can see such a module has a number of jumpers to set the DC output voltage to 5 V, 9V, 12 V, 15 V or 20 V.

This module acts as a trigger or decoy to request specific power profiles from USB-PD power sources such as USB-C chargers, power banks, and adapters. So, with this module, you can trigger USB-PD protocols and thus, for example, charge your laptop via a PD-capable USB-C power supply.

Note at this point that a USB-PD Trigger, sometimes called a USB-PD Decoy, is a small but clever circuitry that handles the USB-PD negotiation and simply outputs a predefined DC voltage.

Some USB-PD Trigger/Decoy modules are adjustable with a selector switch, or cycle among voltages with a pushbutton press, while others deliver a fixed voltage, or will have solder jumpers (or solder pads to install a fixed resistor) to select an output voltage. The output connection points on these modules are typically just two bare solder pads, or small screw terminals in certain cases (Figure 2).

Figure 2 The output connection points are shown on the modules. Source: Author

For just a few bucks each, these smaller and slenderer USB-PD Trigger/Decoy modules are useful to have in your tool chest, both for individual projects and for use in a pinch. In my view, for most applications, the fixed voltage type power provider is preferable, as this prevents accidental slips that could destruct the power consumer.

I recently bought a set of these fixed voltage modules. As you can see, the core part of these single-chip modules is the IP2721 USB Type-C physical layer protocol IC for USB Type-C input interfaces.

Figure 3 IP2721 is a USB Type-C PD protocol IC for USB input port that supports USB Type-C/PD2.0/PD3.0 protocols. Source: Author

The USB Type-C device plug-in and plug-out process is automatically detected based on CC1/CC2 pins. The chip has an integrated power delivery protocol analyzer to get the voltage capabilities and request the matched voltage.

Figure 4 The schematics shows a design use case built around the USB Type-C PD protocol IC. Source: Injoinic Technology

Surprisingly, the newly arrived module—designed for a single, fixed-voltage output—features the IP2721 controller in a bare minimum configuration without the power-pass element.

Figure 5 The module features the IP2721 controller in a bare minimum configuration. Source: Author

Hence, the output voltage will be whatever VBUS is, and this could be 5 V during initial enumeration or stay at this voltage in case negotiations failed. Luckily, for many applications, this will not be much of an issue. But on paper, to comply with the USB power delivery specifications, the device is supposed to have a high-side power MOSFET as the power-pass element to disconnect the load until a suitable power contract has been negotiated.

For this writing, I needed to test the output of my module. So, below you can see a little snap taken during the first test of my IP2721 USB-PD trigger 9-V module; nothing but the process of testing the module with a compatible power source and a DC voltmeter.

Figure 6 DV voltmeter shows the output of the IP2721-based USB-PD module. Source: Author

Here are some final notes on the power delivery.

• USB-PD is a convenient way of replacing power supply modules in many electronics projects and systems. Although USB-PD demands specialized controller chips to be utilized properly, easily available single-purpose USB-PD Trigger/Decoy modules can be used in standalone systems to provide USB-PD functionality.
• Interestingly, legacy USB can only provide a 5-V power supply, but USB-PD defines prescriptive voltages such as 9 V, 15 V, and 20 V in addition to 5 V.
• Until recently, the USB-PD specification allowed for up to 100 W (5 A@20 V) of power, called Standard Power Range (SPR), to flow in both directions. The latest USB-PD specification increases the power range to 240 W (5 A@48 V), called Extended Power Range (EPR), through a USB-C cable. So, if a device supports EPR expansion commands, it can use 28 V, 36 V, and 48 V.
• Since the most recent USB-PD specification allows to realize up to 240 W power delivery through a single cable, it’s possible to provide ample power over USB to multiple circuit segments or devices simultaneously.
• Electronic marking is needed in a Type-C cable when VBUS current of more than 3 A is required. An electronically marked (E-Marked) cable assembly (EMCA) is a USB Type-C cable that uses a marker chip to provide the cable’s characteristics to the Downstream Facing Port (DFP). It’s accomplished by embedding a USB PD controller chip into the plug at one or both ends of the cable.
• The USB-PD Programmable Power Supply (PPS) was implemented with USB PD3.0. With PPS, devices can gradually adjust the current (50-mA steps) and voltage (20-mV steps) in the range from 5 V to 20 V. PPS can directly charge a battery, bypassing the battery charger in a connected device.
• Adjustable Voltage Supply (AVS) was implemented with USB PD3.1 and extended with PD3.2, allowing it to work within SPR below 100 W, down to a minimum of 9 V. AVS is similar to PPS in terms of function, but the difference is that it does not support current-limit operation, and the output voltage is adjusted in 100-mV steps in the range from 9 V to 48 V.

Note that USB-PD, which is combined with USB-C, takes full advantage of the power supply and multi-protocol functions over USB-C. Implementing USB-C for portable battery-powered devices enables them to both charge from the USB-C port as well as supply power to a connected device using the same port.

So, devices using a single or multicell battery charger can now be paired with a USB-C or USB PD controller, which enables the applications to source and sink power from the USB-C port. Below is an application circuit based on MP2722, a USB Type-C 1.3 compliant, highly integrated, 5-A, switch-mode battery management device for a single cell Li-ion or Li-polymer battery.

Figure 7 The application circuit is built around a 5 A, single-cell buck charger with integrated USB Type-C detection. Source: Monolithic Power Systems (MPS)

In the final analysis, it’s important to recall that the USB-PD is not just about the power delivery-related negotiations. Feel free to comment if you can help add to this post or point out issues and solutions you have found.

T. K. Hareendran is a technical author, hardware beta tester, and product reviewer.

Related Content

• Understanding USB Power Delivery 3.2
• USB Type-C PD 3.0 Specification, Charging and Design
• Providing USB Type-C connectivity – What you need to know
• USB Power Delivery: incompatibility-derived foibles and failures
• USB-C PD 3.1 EPR: A Full System Design Solution, Wall to Battery

The post A quick and practical view of USB Power Delivery (USB-PD) design appeared first on EDN.

Mouser Electronics, Inc. announced that it has been named 2024 Distributor of the Year by Bulgin, a leading manufacturer of environmentally sealed connectors and components for various industries, including automotive, industrial, medical and more. Representatives for Bulgin cited Mouser’s strategic support of new product launches and customer growth in 2024.

“Mouser is a valued partner, and we congratulate the Mouser team on this well-deserved award, which celebrates Mouser’s customer service, effective communication, and commitment to meeting our business needs and goals,” said Eric Smith, Vice President of Global Distribution Channel with Bulgin. “Mouser played a key role in contributing to our overall success in 2024, and we look forward to continuing the momentum in 2025 and beyond.”

“We’d like to thank Bulgin for this great honor. This award recognizes our continued efforts to be the industry’s New Product Introduction (NPI) leader, with the latest products from forward-thinking companies like Bulgin,” said Krystal Jackson, Vice President of Supplier Management at Mouser. “We have an outstanding business relationship with Bulgin and anticipate great success together in the future.”

The post Mouser Electronics Named 2024 Distributor of the Year by Bulgin appeared first on ELE Times.

Doing my masters in EE while working full time as a flight software engineer. Always something to keep me busy submitted by /u/new_account_19999 [link] [comments]

This is my second version of a fully analog modular Grid-Tie solar power inverter. Video of testing and building the inverter: https://www.youtube.com/watch?v=wP2KDP2ekxw BEWARE, this design still uses the Buck-Boost topology, which means there is no galvanic isolation between the input and the output, touching any terminal of the solar panels WILL hurt you. Keep this in mind. Since my Last Version that I also posted here on Reddit I've took many of the helpful comments and warnings into consideration when designing this new version. Links to OSHW Lab projects: Main Board: https://oshwlab.com/radiohonza/1200wgridtiebasev1_copy_copy_copy Power conversion module: https://oshwlab.com/radiohonza/9910gridtiebuckboostv1_copy_copy Polarity switcher module: https://oshwlab.com/radiohonza/4q-rectifier-v1_copy Control module: https://oshwlab.com/radiohonza/gridtiecontrolv1_copy_copy MPPT module: https://oshwlab.com/radiohonza/gridtiempptv1_copy_copy_copy Main improvements include: Independent thermal protection on each power conversion module implemented as a CV sensitivity decrease at high temperatures (automatic power balancing between modules, second to last image shows worst case scenario behaviour) Power conversion modules are controlled via an external CV, output current shaping etc is all contained on the module offering up to 125 W continuous output power with 91 % efficiency when delivering into 230 VAC power grid. Grid overvoltage protections, both peak and mean value sensing Grid frequency sensing to prevent islanding (parasitic grid forming) Power modules are built using an aluminum core PCB, which greatly improves cooling Power module CV distribution optimization to improve efficiency at low powers by diving modules into 3 groups and first ramping each group to roughly 30 % power (peak module efficiency) after which all groups continue the rest of the way Improved polarity switcher/4Q rectifier/unfolding stage modules, each capable of delivering up to 2.5 Arms continuously into the power grid or serve 4x power conversion modules (4x125W = 500 W each) Non-resettable thermal fuse for each polarity switcher module disconnecting the power grid in case of overtemperature Improved MPPT module with thermal compensation of the wattmeter section (tracking performance can be seen on last image showing a screenshot of an oscilloscope sensing input voltage ripple and input power ripple to draw the solar panel PV diagram, symetric concave curve indicates basically perfect tracking) Input and output common mode noise filtering Input and output passive overvoltage protections, MOVs and GDT+fast fuse on the input Optional control current input for limiting inverter power (eg. to prevent outflow of energy etc.) No exotic ICs or custom wound inductors are used, EVERYTHING is off-the-shelf and usually available from mutiple different manufacturers Everything is modular, so only the Main board determines the maximum power capability. Feel free to ask any questions or offer suggestions. submitted by /u/MrSlehofer [link] [comments]

Most cars here in Europe have their rear turn signals as separate amber bulbs. In N. America, it's common to utilize the respective side brake light for this function. I designed a circuit which will take the three inputs (L, Brake, and R) and combine them into outputs for the left and right brake light only. In the picture I used cabochon lights from Halloween special effects to simulate. Works perfectly... now. I had an issue where one of the tiny glass diodes broke, and I think it's because I had a 12v source charging a 680uF capacitor through it... A sudden burst of current. I removed the small glass diodes and replaced them with a couple of beefy silicon rectifier diodes, and the issue was resolved. I didn't have a SPDT relay, so I used a DPDT relay, and simply bridged both sides to act as a SPDT relay. This has the other benefit of doubling the current carrying capability. In my original circuit layout, I had added another relay so that this circuit could be bypassed, restoring original functionality. This is why there are three relays instead of only two on the layout plan. I actually designed this circuit years ago, and it was before I knew the terms common, normally closed and normally open, so the relay contacts are labeled E for energized and R for relaxed being connected to the common pin. submitted by /u/One-Cardiologist-462 [link] [comments]

WIN Semiconductors Corp of Taoyuan City, Taiwan — which provides pure-play gallium arsenide (GaAs) and gallium nitride (GaN) wafer foundry services for the wireless, infrastructure and networking markets — has launched its NP12-1B, a 0.12μm gate-length depletion-mode (D-mode) GaN high-electron-mobility transistor (HEMT) technology on silicon carbide (SiC) substrates...

Чек-лист корупціогенних факторів: що це і для чого kpi ср, 06/04/2025 - 17:52

I got an power adapter of an old notebook, so I used it to build a power supply for breadboards using a DC-DC converter with XL4016 together with a display to show voltage and current, packed in a plastic box for cooked food. Simple but effective! submitted by /u/Livio63 [link] [comments]