As high-voltage power rails become more prevalent
and power rails for digital circuits continue to drop,
the need for high-efficiency DC/DC conversion
greatly increases. Reducing the number of
conversion stages to a single stage provides a
massive boost in efficiency, as does innovative
MOSFET power device packaging design that
reduces conduction losses. ROHM Semiconductor
has spearheaded technological development in
these areas. It continues to release new DC/DC
conversion and MOSFET devices that move away
from conventional power electronics limitations and
embrace the future.
voltage decreases, and frequency rises. Therefore,
reducing the switching pulse width is required
for 48V Mild Hybrid systems. But to reduce pulse
width, it is first necessary to solve noise generation
problems during switching. When this switching noise
is introduced into the IC, unstable operation might
occur. To prevent this, conventional control methods
utilize mask time. An analog circuit is also required for
operation, which introduces a delay time. These two
mitigating factors are needed because of the increased
noise component can cause the pulse width to
become wider.
An analog control is needed, which leverages high
voltage processes and ultra-fast pulse control
circuitry to detect information before noise is
generated and perform appropriate control.
ROHMs vertically integrated production system and
both proprietary analog design technology and power
supply process expertise, has made it possible to
achieve such a narrow ON time. Nano Pulse Control
™
devices are available to convert voltages as high as
76V down to 2.5V in a single stage and, therefore,
achieve much higher efficiencies than when using
multiple converters to meet very high step-down
ratios. Another benefit of Nano Pulse Control
™
is that
the higher frequency switching circuitry (over 2MHz)
results in smaller component sizes and a smaller
circuit footprint.
12
ROHM Semiconductor Automotive Gate
Driver Evaluation Boards
LEARN MORE >
ROHM Semiconductor
Automotive Gate Drivers
LEARN MORE >
ROHM Semiconductor AEC-Q101
SiC Power MOSFETs
LEARN MORE >
ROHM Semiconductor
Automotive LDO Regulators &
Voltage Trackers
LEARN MORE >
