Ambo electronic push LED TV step-down driving scheme ob3375

With the mature development of LED technology, the LED beads used in panel have changed from the original multi string low current structure to a single string high current structure. For single string high current applications, Ambo electronics has launched a cost-effective LED driving scheme ob3375.

Ob3375 is a step-down quasi resonant DCDC driver chip, which adopts peak current mode to meet the wide input and output voltage range, so as to achieve high efficiency, low system cost and good electromagnetic compatibility. Ob3375 supports two dimming modes: PWM dimming and PWM to analog dimming, which can easily reach the dimming range of 1%~100%; At the same time, it provides complete protection functions, including LED open circuit protection, led short circuit protection, led negative short circuit to ground protection, step-down drive inductance / diode short circuit protection, step-down drive MOSFET short circuit protection, chip over temperature protection, etc. When the drive is abnormal, ob3375 provides abnormal output signal to inform the previous ACDC power supply while providing reliable protection to ensure the reliability of the power supply system. Ob3375 also has a MOSFET built-in driver chip, including 100v/150v/200v MOSFET specifications, which can drive 32 inch ~65 inch TV, further saving PCB space and reducing system cost.

The unique pwm+pwm to analog combined dimming function of ob3375 enables the dimming depth of the system to reach less than 1%. At the same time, it also has very excellent linearity, and the dimming effect is smooth without step feeling.

Jingxin technology will expand the full range of development of Jingxin

Ashling and crystal technology jointly announce Ashling riscfree ™ The integrated development tool chain will expand to support the full range of risc-v CPU IP of crystal center, including andestar optimized for performance ™ V5 performance isa extension and codense for code size reduction ™ Isa extension.

RiscFree ™ It is the integrated development environment (IDE), compiler and debugger created by Ashling. Now riscfree ™ The updated risc-v CPU supports 32-bit N22, n25f, d25f, a25, a25mp, a27, a27l2, N45, D45, A45, a45mp, and 64 bit nx25f, ax25, ax25mp, nx27v, ax27, ax27l2, nx45, ax45, and ax45mp.

“Ashling RiscFree ™ It has a tool set that supports various cores with a single solution, provides the powerful function of risc-v CPU customers’ heterogeneous and multi-core debugging, and opens a single riscfree ™ An integrated development environment can debug any number of heterogeneous or homogeneous cores. ” Said Hugh O’Keeffe, managing director of Ashling.

NXP 4D imaging radar chip put into production

NXP ® Semiconductors (NASDAQ: nxpi) announced two updates to its industry-leading automotive radar product portfolio, which has been adopted by 20 top OEMs worldwide. The industry’s first dedicated 16nm imaging radar processor NXP s32r45 has been put into mass production, and preliminary mass production for customers will begin in the first half of 2022. In addition, the newly launched NXP s32r41 has extended the advantages of 4D imaging radar to more vehicles. These processors serve the l2+ to L5 autonomous fields together, and support the 4D imaging radar for 360 degree surround sensing.

NXP’s 4D imaging radar is the first radar that provides concurrent 3-in-1 multi-mode radar sensing in short-range, medium-range and long-range operation, and can simultaneously sense a very wide field of vision around the vehicle. To achieve this goal, NXP uses an innovative architecture to improve the performance beyond the original sensor hardware capabilities by using a low complexity sensor configuration with 192 virtual antenna channels. The proprietary radar hardware acceleration can provide up to 64 times the computing performance of the standard processor. The super-resolution radar software algorithm can achieve sub degree angular resolution and advanced MIMO waveforms that allow the antenna channels to operate at the same time, thus realizing the improvement.

The launch of s32r41 provides the industry’s first 16nm radar processor tailored for l2+ autonomous driving applications. Some industry analysts predict that by 2030, this processor may account for nearly 50% of automobile production. The resolution sensor will now benefit from 4D imaging radar sensing. It has up to 6 corners, front and rear radar sensors, and adopts a 360 degree surround mode.

This article is a comprehensive review of enzhipu Anbao of zijingxin Technology
Reviewed by: Pengjing

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