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FUJI ELECTRIC JOURNAL 1998 Vol.71-No.8
Present Status and Prospects for Fuji Electric's IC Technology
Ken Meguro
Fuji Electric's IC (integrated circuit) technology specializes in application specific standard products and the products based on its distinguished technology has been rated high. To be concrete, they are power supply controller ICs, flat panel driver ICs (in plasma and liquid crystal displays), autofocus ICs for cameras, pressure sensors for automobiles, and custom hybrid ICs, based on the high-voltage technology (C/DMOS, complementary/double diffused metal-oxide-semiconductors) and sensor technology. This paper describes the device and process technologies and the features of main products.
CMOSIC for Current-Mode PWM Power Supply
Hiroshi Maruyama
Recently, importance has been attached to energy saving as a means to solve environmental problems, and improvement in the efficiency and power consumption of switching power supply widely used for electric and electronic equipment has come to the fore. To reduce consumption for waiting, power supply circuits with a standby mode also have come into use. To reduce control-IC (integrated circuit) current consumption, Fuji Electric has applied high-voltage CMOS (complementary metal-oxide-semiconductor) process technology to ICs for switching power supply and has developed the 8-pin CMOSIC "FA1384x series" for current mode PWM (pulse-width modulation) power supply.
Control IC for 3-Channel Switching DC-DC Converters
Masayuki Yamadaya
It has been indispensable for DC-DC converters used as power supply for portable electronic appliances to reduce in size and weight and raise efficiency. Low operating voltage has come into wide use, and low-voltage control ICs (integrated circuits) for the DC-DC converters have been in demand. Fuji Electric has developed the control IC "FA3629V" for 3-channel switching DC-DC converters mainly used for liquid crystal display power supply, which is packed in a small, thin, 16-pin TSSOP package with a built-in switching MOSFET (metal-oxide-semiconductor field-effect transistor).
Control IC for 6-Channel Switching DC-DC Converters
Kazuya Endo
Portable electronic appliances, including video cameras, require small size, light weight and long operation. The switching power supply built in these appliances accordingly require small size, light weight and low power consumption. To meet these market needs, Fuji Electric has developed the control IC (integrated circuit) "FA3621F" for a 6-channel switching power supply suitable to structure a multiple-output power supply system. This paper describes the rating, features, and application examples of this control IC.
Advanced Miniature Autofocus Modules
Ken'ichi Mori
This paper describes technologies developed for backlit shooting and for reduction in range finding time applied to autofocus (AF) modules for autofocus cameras. The former is to obtain distinct subject image data by removing the high luminance data of the backlit part inside the AFIC (AF integrated circuit). The latter is to automatically shorten range finding time of the AF module by removing a sensor range in the high-contrast area and reducing the dynamic range width.
Autofocus Modules with MOS analog sensors
Makoto Tanaka, Sachiaki Komatsu, Yoshinari Enomoto
This paper describes MOS (metal-oxide-semiconductor) analog sensor and module downsizing technologies applied to autofocus (AF) modules used in AF cameras. When compared with conventional digital data output type AF modules, analog type AF modules can reduce sensor-pitch and have realized nearly equal range finding accuracy with half the module volume.
Advanced Color PDP Driver IC Using Dielectric Isolation Technology
Hitoshi Sumida, Atsuo Hirabayashi, Hiroshi Shimabukuro
This paper describes dielectric isolation (DI) technology using the lamination and trenching process, the advantages of a PDP (plasma display panel) driver IC (integrated circuit) using DI, and an outline of a fabricated color PDP scan driver IC utilizing DI and a lateral IGBT (insulated-gate bipolar transistor). The IC has accomplished high packing density with the DI process and high drivability with the lateral IGBT. These have resulted in a large reduction in chip size, high performance, and low cost compared to ICs using pn junction isolation. In addition, techniques to improve the blocking capability of high-voltage devices on a DI wafer is described.
Character Display LCD Controller Driver ICs
Hiroaki Kamo
The LCD (liquid crystal display) for the display panel of information and communications equipment is widely used as means of information transmission and man-machine interfaces. This paper takes up the controller driver IC (integrated circuit) for small, character display LCDs. The features, main characteristics, and application examples of the IC series to meet diversified displays are outlined.
High-Voltage CMOS Process Technology
Keishirou Kumada, Satoshi Yokoyama
ICs (integrated circuits) for liquid crystal display and plasma display drive and power supply control require high-voltage, high-power, analog control characteristics as well as small size and low power consumption. To satisfy these characteristics and requirements, Fuji Electric has developed a CMOS (complementary metal-oxide-semiconductor) process which can on a chip integrate high-voltage, bipolar, and logic devices. This paper describes an outline of this CMOS process and the component devices.
Design Technology for System ICs
Yutaka Yoshida, Ken Nakahara
The system IC (integrated circuit) that implements a system composed of multiple functional macro-blocks on a chip has been realized by the progress in semiconductor technology and is attracting attention. Meanwhile strong demands for short turnaround time for developing complicated, large-scale system ICs require more rationalization with automated design methodology and reuse of proven cores. This paper describes Fuji Electric's efforts for design automation and application in developing the USB (universal serial bus) hub controller IC.
On-A-Chip Integrated Pressure Sensors for Diesel Engines
Tadayoshi Murakami
The increase in recreational and multipurpose vehicle sales has brought a bright market of diesel engine vehicles. Meanwhile this poses a problem that exhaust CO2, NOx and particles must be reduced by improving fuel consumption from the viewpoint of the global environment, and the optimum control of fuel injection systems becomes more and more important. A semiconductor pressure sensor is used to precisely measure air volume for the air-fuel mixture. This paper describes an outline of the pressure sensor that Fuji Electric has developed for diesel engines following the one for gasoline engines.
IC Quality Assurance
Kozo Kataoka
This paper describes basic thought about IC (integrated circuit) quality assurance at the four stages of new product development, preparation for production, production, and delivery. At each stage, analysis data is fed back to the source to maintain or improve the product quality and reliability. Lists of analysis methods and analysis examples, and failure modes and causes derived from the valuable IC failure analysis data are quoted.
