Littelfuse’s small sized, surface-mountable high-current fuse provides surge current protection.
Littelfuse’s 456SD series NANO² fuse is a small sized, surface-mountable high-current fuse which provides over current and excessive surge current protection for applications operating at high current in a limited space.
Such applications are mostly served today through a single large-sized high-current industrial type fuse or in some cases, parallel configuration of lower amperage SMD fuses. The 456SD 50 A series fuse gives the option of a single fuse solution for protection for such application requirements.
Features
Available in ratings of 40 A to 50 A
High interrupting rating: 600 A at 75 VDC
Very low cold resistance, temperature rise, and voltage drop
High inrush/surge current withstand capability
Surface mountable high-current fuse
Single fuse solution for high-current applications
Suitable for a wide variety of voltage requirements and applications
Enhances power efficiency
Avoids nuisance opening due to high inrush and surge current inherent in the system
Vishay’s VEML6035 is a 16-bit, low-power, high-sensitivity CMOS ambient light sensor operated via a simple I²C command. The sensor offers an active interruption feature that is triggered outside of the threshold window settings, thereby eliminating loading on the host. The active average power consumption is approximately 300 μW.
VEML6035 incorporates a photodiode, amplifiers, and analog/digital circuits in a single chip. Vishay’s patented Filtron™ technology, a wafer-level optical filter, provides the best spectral sensitivity to match human eye responses. The sensor has excellent temperature compensation to maintain output stability under changing temperatures and its refresh rate setting does not need an external RC low-pass filter. There is a programmable shutdown mode which reduces current consumption.
Features
Package type: surface-mount
Dimensions (L x W x H): 2.0 mm x 2.0 mm x 0.4 mm
Integrated modules: ambient light sensor (ALS)
Supply voltage range VDD: 1.7 V to 3.6 V
Communication via I²C interface
I²C bus H-level range: 1.7 V to 3.6 V
Floor life: 168 h, MSL 3, according to J-STD-020
Low standby current consumption: 0.5 μA (typ.)
Applications
Ambient light sensor for mobile devices (e.g. smart phones, touch phones, PDA, GPS) for backlight dimming even under tinted glass
Ambient light sensor for industrial on-/off-lighting operation
Optical switch for consumer, computing, and industrial devices and displays
The Perf-V is an FPGA based development board designed for RISC-V opensource community by PerfXLab. It incorporates various peripheral chips and offers many interfaces. Perf-V has great flexibility and transplant multiple architectures. Some RISC-V development boards with silicon featuring RISC-V instruction set already exist, such as SiFive’s HiFive1 or Kendry KD233 board. One good thing about RISC-V is that it allows a user to customize the instructions set, and if you are up for that, an FPGA board provides the flexibility you need. The board uses Xilinx Artix-7 FPGA, Vivado software development, and it is designed for the RISC-V open source community and FPGA learning enthusiasts design development board.
The Perf-V incorporates a variety of outlying chips to enable a rich set of peripheral interfaces, including PMOD, Arduino, JTAG, UART interfaces, and high-speed interfaces for expansion of HDMI, VGA, USB2.0/3.0, camera, Bluetooth, expansion boards, etc. Strong flexibility. Due to its self-developed smart car, the Perf-V can use mobile phone Bluetooth to control the movement of the car and can realize automatic tracing and obstacle avoidance functions. This is quite an impressive function for me. Perf-V successfully ports a variant of RISC-V architectures, enabling a solid experimental platform for RISC-V processor design and FPGA product development, and is the preferred hardware for learning, scientific research, project development, and DEMO solutions.
The Perf-V provides a variety of modules available for selecting powerful, rich learning materials, complete experimental routines which are cost-effective. If you will like to purchase the board, you can do so by getting a $79 kit with the board and a USB burner / FPGA USB cable. A download page is available, but only with hardware documentation like datasheets and PCB layout (PDF), but nothing entirely about RISC-V.
The specification listed for the Perf-V board include
FPGA – Xilinx Artix-7 XC7A35T-1FTG256C with 33280 Logic Cells, 90 DSP, 41600 CLBs, 1800 Kbit Block RAM, and 5 CMTs; Optional FPGAs up to Xilinx XC7A100T with 101,440 logic cells
System Memory – 256MB DDR3 (16Megx16x8Banks)
Storage – 8MB FPGA FLASH, 8MB RISC-V flash
Expansions: Arduino compatible headers, 1x PMOD connector, “High-speed interface” for expansion of HDMI, VGA, USB2.0/3.0, camera, Bluetooth, expansion boards, etc
Debugging — User JTAG/UART interface
Misc – Power & user LEDs; 6x soft-touch buttons; power key
Power Supply – Via power barrel jack
For more information, visit the forums which are in Chinese, and download page too.
A bridge between your computer and I2C (via Sparkfun Qwiic connectors), GPIO, and SPI (via its mikroBUS header).
A power supply, providing 6 A of 5 V power to downstream devices and 13 mA resolution monitoring (per-port). Port power is individually limitable and switchable.
A USB to TTL Serial adapter.
A flexible embedded electronics test and development tool. USB data pairs are individually switchable, allowing you to emulate device removal and insertion via software.
Mountable.
Functionally flexible. Open source python drivers on the upstream host and Python firmware on the internal MCU allow the behavior of this USB hub to be easily changed to suit your application and environment.
The Capable Robot Programmable USB hub is housed in a robust extruded aluminum enclosure.
Internally mounted LED light pipes direct status information from 10 RGB LEDs to the front panel for easy observation of hub state.
The rear of the enclosure exposes the upstream USB connection and a USB port to re-program and communicate with the internal MCU. Also exposed are two I2C buses (via Sparkfun Qwiic connectors), the Programmable USB hub’s UART, and 2x GPIO. Input power is provided to the hub by a locking Molex connector.
Features and Specifications
USB2 High-Speed Hub
4x USB2 High Speed (480 mbps) downstream ports
1x USB2 High Speed (480 mbps) upstream port
5th endpoint on USB hub exposes I2C, SPI, UART, and 2x GPIO
Data lines to each USB port can be disconnected via software commands. This allows errant USB devices to be “unplugged” virtually and re-enumerated.
USB digital signals can be boosted to help drive long cables.
Power Monitoring & Control
5 V power on each downstream port can be individually turned on and off
Monitor the power consumed by each port at up to 200 Hz at a resolution of 13 mA
Adjustable (per-port) current limits between 0.5 A and 2.6 A
Onboard regulator supports 12 V to 24 V power input and generates 6 A of 5 V power for downstream USB devices; both voltages can be monitored by the internal MCU. No power is drawn from the upstream USB port.
Input power is protected from over-voltage events and reverse-polarity connection.
Physical IO
mikroBUS header to add additional sensors and connectivity. Solder jumpers allow the UART and SPI pins to connect to either the USB hub or the MCU.
JST GH connector with UART and 2x GPIO, controlled by the USB hub.
2x Sparkfun Qwiic connectors enable easy attachment of I2C sensors to the USB hub or to the internal MCU.
5x RGB status LEDs to visualize port power draw
5x RGB status LEDs to visualize port connection types
The project is live on Crowdsupply.com and has 49 days left with pledges starting at $200.
This project generates 8 different LED-lighting patterns (Visual Effects) and is based on PIC16F886. The project demonstrates different chasing effects being generated using 20 SMD LEDs and speed of LED-lighting moving is adjustable with the help of the on board trimmer potentiometer. 8 patters can be set using 3 on board PCB jumpers. Circuit consists of PIC16F886 micro-controller from Microchip and 20 SMD LEDs. Circuit works with 5V DC, Trimmer potentiometer provided to adjust speed of sequence.
Features
Supply 5V DC
8 Different Patters Possible ( LED-Lighting Sequence)
Chasing speed adjustable
LED Lighting Effects Generator using PIC16F886 – [Link]
This project generates 8 different LED-lighting patterns (Visual Effects) and is based on PIC16F886. The project demonstrates different chasing effects being generated using 20 SMD LEDs and speed of LED-lighting moving is adjustable with the help of the on board trimmer potentiometer. 8 patters can be set using 3 on board PCB jumpers. Circuit consists of PIC16F886 micro-controller from Microchip and 20 SMD LEDs. Circuit works with 5V DC, Trimmer potentiometer provided to adjust speed of sequence.
Features
Supply 5V DC
8 Different Patters Possible ( LED-Lighting Sequence)
Commell has launched a 3.5-inch “LE-37M” SBC that taps Intel’s 8th Gen H-series CPUs, and features triple displays, 4x USB 3.1, 2x SATA III, 2x GbE, and mini-PCIe and M.2 expansion. Commell has released a number of Intel’s 8th Gen “Coffee Lake” products and they launched the LV-67X industrial Mini-ITX board last August and followed up with a 3.5-inch LS-37L SBC that also supports up to 65W TDP Coffee Lake S-series chips via an FCLGA1151 socket. The LE-37M has a few new features and an FCBGA1440 socket which supports Coffee Lake H-series with more embedded-friendly 45W TDPs.
Commell offers two variants of the SBC, a LE-37M5 SKU with the quad-core, 8-thread Core i5-8400H clocked at 2.4GHz/4.2GHz and a LE-37M7 with the hexa-core, 12-thread Core i7-8850H clocked at 2.6GHz/4.3GHz. A QM370 chipset is present in the SBC, instead of the newer Q370 present on the S-series boards. Just like the earlier Commell SBCs, the LE-37M is available with Windows drivers but can support Linux as mentioned in the manual. The LE-37M is developed for imaging, machine vision, infotainment, medical, and gaming machine applications.
The LE-37M offers twice the RAM as the LS-37L with up to 32GB of dual-channel, 2666MHz DDR4. The LE-37M is also equipped with 2x GbE and 4x USB 3.1 ports, 2x SATA III ports and a mini-PCIe slot with mSATA and PCIe support. The SIM slot has been replaced with an M.2 E-key slot for general-purpose expansion. The LE-37M offers triple display support, but with a slightly different feature set. Instead of a header, there’s a new coastline VGA port in addition to the HDMI port and headers for DVI, LVDS, and an LCD inverter. The LE-37M offers you a choice of Display Port or a second VGA or LVDS header (LS-37MT5 or LS-37MT7 SKUs).
The VGA port substitutes the LS-37L’s DB9 COM port, and instead of 4x RS232 headers you now get two. Available also are headers for 2x RS232/422/485, 4x USB 2.0, and HD audio, GPIO, PS/2, and SMBus. The system offers a 0 to 60°C range and has a wider 9-35V power input. No pricing or availability information is provided for the LE-37M.
Storage — 2x SATA 3.0 with RAID 0, 1 and Intel Rapid Storage Technology.; mSATA via mini-PCIe
Display/media: HDMI port, VGA port, DisplayPort or on LS-37MT5 or LS-37MT7 SKUs, a second VGA or LVDS header, LVDS, DVI headers, LCD inverter, Triple display, and 4K support, Audio mic-in/line-in and line-out header (Realtek ALC262)
Networking — 2x Gigabit Ethernet ports (Intel I211AT and 1219LM); LM port supports iAMT 12.0
Other I/O: 4x USB 3.1 Gen 2 ports, 4x USB 2.0, 2x RS-232, 2x RS232/422/485, 8-bit GPIO, SMBus, PS/2
Fans and pumps can be found in various applications including home appliances and industrial systems. Driven by more stringent regulations and growing awareness around energy efficiency, this segment is increasingly being shaped by rising demand for inverterization, especially in pumps and fans for low-power drives.
Take a look at Infineon’s broad portfolio of solutions with power levels ranging from 60 W to 3 kW in a range of different topologie, like:
CIPOS™ Intelligent Power Modules
Digital Motor Controllers iMOTIONTM
Discrete IGBTs
Gate Driver ICs
CIPOS™ Intelligent Power Modules (IPMs)
Depending on the level of integration and power to be handled, Infineon offers a variety of IPMs, with different semiconductors in different packages, voltage and current classes. These IPMs are separated into CIPOS™ Nano, CIPOS™ Micro, CIPOS™ Tiny, CIPOS™ Mini and CIPOS™ MAXI families. For more information on the CIPOS™ families, click here.
Digital Motor Controller (iMOTION™)
The iMOTION™ IMC100 family takes advantage of the latest evolution of Infineon’s field-proven Motion Control Engine (MCE 2.0) to accomplish high efficiency control of a variable speed drive. For more information about the benefits of Infineon’s Digital Motor Controllers, click here.
Discrete IGBTs
The 650 V TRENCHSTOP™ IGBT 6 generation is optimized to meet the requirements on power electronics for low power motor drives and so for pumps and fans, such as short circuit rating, best thermal performance and lower switching losses especially in systems with switching frequencies up to 30 kHz. click here for more information.
Gate Driver ICs
Infineon’s portfolio of gate driver ICs spans a variety of configurations, voltage classes, isolation levels, protection features and package options. For pumps and fans, Infineon offers 600 V and 1200 V half-bridge gate driver ICs with level-shift SOI technology to control MOSFETs and/or IGBTs. Low-side gate drivers for the PFC supply stage are also available.
For more information about the benefits of Infineon’s Gate Driver ICs, click here.
The 1000Z Series is the economic level Digital Oscilloscope platform from Rigol. It offers unprecedented value in customer applications with its innovative technology, industry leading specifications, powerful trigger functions and broad analysis capabilities. The 1000Z Series 4 channel oscilloscopes come in 50, 70, or 100 MHz versions with a 7 inch display and Rigol’s UltraVision technology. The “-S” models include a 2 channel integrated waveform generator and the PLUS models are upgradable to Mixed Signal Oscilloscopes with the purchase of the RPL1116 digital lead kit. All the analysis, decoding, deep memory, and advanced triggering capabilities are now included in this powerful 4 channel scope at an exceptional price.
Up to 100MHz Bandwidth, 4 analog channels
16 digital channels for Mixed Signal analysis
1G Sa/s Real-time Sample Rate
24Mpts Memory Depth
Innovative “UltraVision” technology
Up to 30,000wfms/s Waveform Capture Rate
7 Inch WVGA (800×480), multiple intensity levels waveform display
Built in 2 channels 25MHz waveform Generator(MSO1000Z-S)
The following “MSO Ready” or -Plus models are available from a starting price of 399 Euro:
DS1074Z –Plus 70MHz, 4-channel oscilloscope
DS1074Z (-S) –Plus 70MHz, 4-channel oscilloscope with integrated arbitrary function generator (2 channels, 25 MHz) as S-version)
DS1104Z –Plus 100MHz, 4-channel oscilloscope
DS1104Z (-S) –Plus 100MHz, 4-channel oscilloscope with integrated arbitrary function generator (2 channels, 25 MHz) as S-version)
MaxLinear, Inc. announced that Raspberry Pi has selected the MxL7704 Universal PMIC to power its latest single-board computer, the Raspberry Pi 4. The MxL7704 is a five output universal PMIC optimized for powering low power FPGAs, DSPs, and microprocessors from 5V inputs.
MaxLinear points out that the MxL7704 already powers the popular Raspberry Pi 3 Model B+. The company says that the versatility of this PMIC allowed it to be easily re-programmed to accommodate the new current limit, sequencing, and power specifications of the upgraded SoC and surrounding ICs of the new Raspberry Pi 4.
MxL7704 provides all essential power rails required by the Raspberry Pi 4, including the low noise voltage rail for the audio circuitry.
With its I2C programmability, MaxLinear says it also handles the unique power sequencing requirements of each rail with ease. The MxL7704’s I2C interface communicates with Rasberry Pi 4’s SoC for dynamic voltage scaling, sequencing control, status monitoring, and PGOOD routing. These features enable the Raspberry Pi 4 to dynamically reduce the voltage to the SoC when the system is idle and boost it when the processor is running at maximum speed to save power.
Raspberry Pi 4
Four synchronous step-down buck regulators provide system memory, I/O, and core power from 1.5A to 4A. An on-board 100mA LDO delivers clean 1.5V to 3.6V power for analog sub-systems.
Also, an integrated 8-bit ADC with 2 external inputs and temperature sensor provides die temperature monitoring, telemetry, and additional flexibility. The Raspberry Pi 4 uses the MxL7704’s on-board ADC to determine if a high-current delivery USB power supply is connected.
“The MxL7704 provides five rails pre-optimized for ease of use in single-board computer systems,” said James Lougheed, Vice President of Marketing for MaxLinear’s High-Performance Analog Products. “The PMIC includes a host of features that allow monitoring, telemetry and additional flexibility. These unique features provide the Raspberry Pi 4 with knowledge and control of power status and efficiency to ensure peak performance during various operating conditions.”
“After using the MxL7704 very successfully on the Raspberry Pi 3 Model B+, we were very pleased to select it again to power our next generation Raspberry Pi 4 Model B computer,” said James Adams, Chief Operating Officer for Raspberry Pi (Trading) Ltd. “The combination of highly efficient, high current buck supplies in a very cost-effective package which also included I2C control, dynamic voltage scaling, programmable sequencing as well as a low noise LDO and ADC has been key to making sure we have met our design and cost targets for Raspberry Pi 4.”
The 5mm x5mm 32-pin QFN package of the MxL7704 helps the Raspberry Pi preserve its small form factor.
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