The new BCD technologies feature a voltage spectrum running from 12 to 60
volts to support multiple LED applications including LCD flat panel display
backlighting, LED displays, general lighting and automotive lighting. The technology
portfolio spans process nodes from 0.6-micron to 0.18-micron with a number of
digital core modular options for varying digital control circuit gate densities.
The CyberShuttleTM prototyping service supports the 0.25-micron and 0.18-micron
processes for preliminary function verification.
The new processes provide a number of integration features that reduce a system’s
component counts. The robust high voltage DMOS capability provides MOSFET switch
integration to reduce the bill of materials (BOM). The integrated passive component
options include high voltage bipolar, high voltage, high precision capacitors,
high resistance poly and Zener diodes to reduce external passive component count
and significantly reduce circuit board area.
The DMOS process supports foundry’s leading Rdson performance (i.e.;
72 mohm per mm2 at BV>80 volts for a specific 60V NLDMOS) and its high current
driving capability optimizes device sizes that enhance power efficiency. A robust
safe operating area (SOA) makes it ideal for both power switch and driver design.
Fine detailed characterization also provides a useful reference to optimize
the design budget for optimum chip size.
On the CMOS side, a 5-volt capability supports analog Pulse Width Modulation
(PWM) controller design elements and the 2.5-volt and 1.8-volt logic cores are
optional modules for higher-level digital integration. In addition, logic compatible
one-time programmable (OTP) and multi-time programmable (MTP) memory options
are available for enhanced digital programming design.
“The new BCD technologies for LED drivers are very leading edge in driving
device integration. The associated PDKs feature highly accurate SPICE models
that really enhance the potential for easy single chip design,” points
out George Liu, Director, Industrial Business Development. “In addition,
mismatching models help optimize current mismatching performance in multi-channel
LED driver designs.”