The BD9P series ensures stable operation
during battery input voltage fluctuation (Figure
1), reducing output overshoot to less than
1/10th of conventional products. This eliminates
the need for additional output capacitors
typically required as a countermeasure against
overshoot. Additionally, adopting a new
control method makes it possible to achieve
high efficiency and fast response (which
typically represents a tradeoff). Not only does
this provide a 92 percent power conversion
efficiency at heavy loads (at 1A output current),
but 85 percent efficiency at light loads (1mA) as
well, ensuring leading-class efficiency across
the entire load range. As a result, low power
consumption is enabled both when driving and
when the engine is stopped (standby current
can be reduced).
Furthermore, combining the new product
with the BD9S series of secondary DC/DC
converters connected to the subsequent stage
leads engineers to faster design more efficient
automotive power supply circuits. Reference
designs are also available on ROHM's
website. Utilizing reference boards, tools,
and ROHM's free web simulation tool, ROHM
Solution Simulator (Figure 2), it is possible to
perform simulations close to actual conditions,
significantly reducing application design
resources. ROHM is committed to supporting
the evolution of vehicles by developing
products that contribute to lower power
consumption and higher system reliability.
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Figure 2: Utilizing reference boards, tools, and ROHM's free web simulation tool, ROHM Solution Simulator, it is
possible to perform simulations close to actual conditions, significantly reducing application design resources.
(Source: ROHM Semiconductors)
