BCDMOS is a complex circuit composed of bipolar,

CMOS Complementary metal–oxide–semiconductor (CMOS, pronounced "sea-moss ", , ) is a type of MOSFET, metal–oxide–semiconductor field-effect transistor (MOSFET) semiconductor device fabrication, fabrication process that uses complementary an ...

and

DMOS upright=1.3, Two power MOSFETs in amperes">A in the ''on'' state, dissipating up to about 100 watt">W and controlling a load of over 2000 W. A matchstick is pictured for scale. In electronics, the metal–oxide–semiconductor field- ...

devices. BCDMOS technology allows to drive discrete high voltage components (several hundred of operating voltage) at high frequency while keeping high integration with technology nodes down to 40 nm or 22 nm. Many applications still use process node of 0.35μm in 2023. Application of this type of circuits are find in automotive, audio amplifier, RF, industry, silicon photomultiplier ( SiPM).

History

SGS (now

STmicroelectronics STMicroelectronics Naamloze vennootschap, NV (commonly referred to as ST or STMicro) is a European multinational corporation, multinational semiconductor contract manufacturing and design company. It is the largest of such companies in Europe. ...

) invented the BCD (bipolar-CMOS-DMOS) technology - revolutionary at the time - in 1985 and has continually developed it ever since. BCD is a family of silicon processes, each of which combines the strengths of three different process technologies onto a single chip.

Features

According to Maxim website, it is an innovative process characteristics that provides the following features: # high break-down

voltage Voltage, also known as (electrical) potential difference, electric pressure, or electric tension, is the difference in electric potential between two points. In a Electrostatics, static electric field, it corresponds to the Work (electrical), ...

but small

transistor A transistor is a semiconductor device used to Electronic amplifier, amplify or electronic switch, switch electrical signals and electric power, power. It is one of the basic building blocks of modern electronics. It is composed of semicondu ...

s, # quite low on-resistance, which is important for the integration of multiple power

FET The field-effect transistor (FET) is a type of transistor that uses an electric field to control the current through a semiconductor. It comes in two types: junction FET (JFET) and metal-oxide-semiconductor FET (MOSFET). FETs have three termi ...

s of low resistivity, # double-metal-layer to support hi-current # combining thin film and poly-poly caps (in silicon). High-accuracy references can be integrated. According to Dongbu HiTek's news, it claims to launch the first 0.18-micrometre BCDMOS process in industry. The new process integrates

logic Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the study of deductively valid inferences or logical truths. It examines how conclusions follow from premises based on the structure o ...

analog Analog or analogue may refer to: Computing and electronics * Analog signal, in which information is encoded in a continuous variable ** Analog device, an apparatus that operates on analog signals *** Analog electronics, circuits which use analog ...

and hi-voltage functions to reduce size.

References

{{DEFAULTSORT:Bcdmos Logic families