A TECHNICAL NOTE ON KS621230A7 – 300 AMPERES / 1200 VOLTS SINGLE DARLINGTON TRANSISTOR MODULE

KS621230A7, the Single Darlington Transistor Module, is a high power device designed by POWEREX for use in switching applications. The key features of KS621230A7 module refer to isolated mounting, Planar Chips, discrete fast recovery feedback Diode, high gain (hFE) and base emitter speed up Diode. The module consists of one Darlington Transistor with a reverse parallel-connected high-speed diode and a base-to-base emitter speed up diode.

Details Of The Absolute Maximum Ratings Of KS621230A7 (At A Temperature Of 25oc)

The Junction temperature range for KS621230A7 device is from – 40oC to + 150oC, while the storage temperature range is from – 40oC to + 125oC. The Collector Emitter Sustaining Voltage (given VBE as –2V), the Collector Base Voltage and the Collector Emitter Voltage are all 1200 V and the Emitter Base Voltage is 7V. The continuous Collector Current and the Diode Forward Current correspond to a figure of 300 Amp, while the Continuous Base Current and Diode Surge Current ratings are 16 Amp and 3000 Amp, respectively.

The Power Dissipation mark is at 2000 W; the ratings for maximum Mounting Torque M6 terminal Screws (E, C) are 26 in, -lb and 12 in, -lb for maximum Mounting Torque M4 terminal Screws (B, Bx). The typical Modular Weight is 470 grams and V Isolation rating is 2500 V.

The mentioned technical features and ratings qualify KS621230A7 for use in Inverters, DC Motor Control, Switching Power Supplies, AC motor control and various other applications.

CY7C342B-30RI – A 100% USER CONFIGURABLE 128-MACROCELL MAX EPLD.

CY7C342B-30RI, manufactured by the Cypress Semiconductor Corporation, is a 128-Macrocell MAX EPLD. Which implies that CY7C342B-30RI is an Erasable Programmable Logic Device (EPLD) and uses CMOS EPROM cells to configure logic functions within the device. The key highlight of the CY7C342B is the inherent architecture MAX, which is 100% user configurable and therefore, allows the user to accommodate a host of independent logic functions in the device.

The Structural Details

CY7C342B-30RI comprises of eight logic array blocks (LAB), where each block consists of a macrocell array containing 16 macrocells, an expander product term array containing 32 expanders and an I/O block. In all therefore, there are 256 expander product terms, which are to be used and shared by the macrocells within each lab. The labs are all interconnected with a programmable interconnect array, which is given the task routing all signals throughout the chip. The maximum access time of a CY7C342B-30 is 30ns.

Functional Relevance Of Cy7c342b

CY7C342B-30RI owing to its features like high speed and density can be deployed in various applications. It can be used for replacements of large numbers of 7400 series TTL logic, can be deployed in complex controllers and multifunction chips. The device due to its higher functionality (about 25 times of the 20 pin PLDs) further allows replacement of over 50 TTL devices. By enabling replacements for large amount of logic, the CY7C342B-30RI reduces board space, part count and increases the system reliability and therefore, offers expertise in a compact package.

IC068ABC – Powered To Maximize The Performance Of A Vmebus Interface Controller

VIC068ABC is a VMEbus interface controller, manufactured by Cypress Semiconductor Corporation. The VIC068ABC performs all VMEbus interface controller functions, along with the various other critical operations. The key performance attribute to a VIC068ABC however is to maximize the performance of a VMEbus interface of a VMEbus master/slave module by working upon the cost and board requirements, and deploying patent on-chip output buffers. It is an interface between the local CPU Bus and the VMEbus. VIC068BC is the result of combined effort of a consortium of board vendors, and therefore, is compatible between boards designed by different vendors.

A Perfect Controller, Arbiter, Master/Slave Function Manager

VIC068ABC beyond doubt matches the qualification criteria required for the mentioned designations. The 58 internal registers providing configuration control, explain the controller capabilities. The arbitration support is extended by the single-level, priority and round robin arbitration functionalities. The VIC068 further supports read, write, posting and block transfers to qualify as the master/slave function manager. It also provides for programmable metastability delay and data acquisition delays.

The VIC068ABC further enables interleaved block transfers over the VMEbus. It acts as the DMA master on local bus and supports local module-based DMA. VIC068 provides interrupt support and has 29 interrupts mapped.

VIC068ABC performs the mentioned functions and many others with precision. It is quite easy to manage and can be easily reset by any of the three resetting conditions viz., Internal Reset, System Reset and Global Reset.

Other parts of interest in this space include:

CY7C960A-ASC

25 MHz MC68040 32-Bit Microprocessor

6300ESB I/O Controller

The Heart of the Digital Analog Converter

An analog to digital converter (abbreviated A/D, ADC or A to D) is an electronic circuit that converts continuous signals to discrete digital numbers. The reverse operation is performed by a digital to analog converter (DAC) Typically, an ADC is an electronic device that converts an input analog voltage to a digital number. The digital output may be using different coding schemes, such as binary and two's binary. However, some non-electronic or only partially electronic devices, such as rotary encoders can also be considered ADCs.

An example of an analog to digital converter is part number DAC729KH manufactured by Texas Instruments.

DACs are now widely used in COMPACT DISC (q.v.; CD) players, in digital audio- and videotape players, and in digital signal processing audio and video equipment. Most DACs use some form of resistor network. Digital data is applied to the resistors in groups of bits. The resistances vary in definite ratios; the current flow in each one relates directly to the binary value of the bit received.