Embedded System News .Com

Entries summary:

• Input Voltages, Semisouth Adds 1700
• Headphone Amplifier, Audio Playback Time
• 5kv Esd, 16 5kv Esd
• Synchronous Rectification, Synchronous Rectification Controller

The First Product is 1700 V normally-off SiC JFET, targeted at the auxiliary power supply market for motor drives. The new 1700 V Sic JFET named the SJEP170R550 offers higher blocking voltage (1700 V), five times lower on-resistance (550 m-Ohm), and ~ ten times lower output capacitance (COSS of 20 pF) and gate charge (QG of 10 nC). The 1700 V Normally-off Sic JFET offers the designer additional advantages compared to Si, including higher input voltages, better efficiency, including a significant double-digit efficiency improvement at high input voltages. The second product is 1200 V normally-on version of popular normally-off Sic JFET...

The MAX97200 is a dual-mode Class H headphone amplifier designed for battery-operated portable devices. The MAX97200 Amplifier uses Maxim's proprietary DirectDrive II technology to implement an extremely efficient Class H topology. Nearly 100% more efficient than Class AB amplifiers, the MAX97200 substantially extends audio playback time. Additionally, its glitch-free switching architecture and clickless/popless performance provide end customers with a richer audio experience...

The new ISL3217x and ISL3227x series are new family of small-footprint quad 16.5kV ESD-protected RS-485 and RS-422 receivers. The new ISL3217x and ISL3227x series feature wide supply-voltage operating ranges of 3V to 5.5V and extended temperature ranges to 125 degrees C, making them ideal design choices for motor controllers, encoders, factory automation, and process control networks. All of the new ICs also feature the industry's best ESD ratings, at ±16...

The NCP4303A and NCP4303B are full featured synchronous rectification controller and driver integrated circuits (ICs) tailored to control synchronous rectification circuitry in switch mode power supplies. Its can be used in various topologies such as flyback, forward and Half Bridge Resonant LLC. The combination of externally adjustable minimum on and off times helps to fight the ringing induced by the PCB layout and other parasitic elements. Therefore, a reliable and noise less operation of the SR system is insured...