Lowest power dissipation : By employing reduced current sense thresholds, the PFC controller uses a smaller shunt resistor
, which cuts power dissipation in half compared to previous-generation devices, while maintaining low THD.
This accuracy, combined with 12-bit resolution, enables customers to use the lowest possible voltage drops across current shunt resistors
, thereby minimizing power losses, dissipation and board space.
The IRAMX20UP60A is a 20A, 600V IPM that does not include a shunt resistor
but is packaged in a more compact SIP2 outline.
Current sensing is realized by shunt resistors
connected in series into the mutual ground of the bottom transistors.
Each input channel supports independent and flexible gain stages, making the ADE7953 energy metering IC suitable for use with a variety of current sensors, such as low value shunt resistors
and current transformers.
April 11, 2014 /PRNewswire/ -- ROHM has recently announced the development of high power ultra-low-ohmic shunt resistors
ideal for current detection in applications with increased power requirements, such as automotive systems and industrial equipment.
Bi-directional current sensing detects over-current conditions during positive and negative load currents without any external shunt resistors
com/motor, motor-driven applications such as appliances and automobiles, can cost-effectively reduce energy consumption by replacing expensive optical or hall-effect encoders with inexpensive shunt resistors
70-uV maximum offset voltage and low gain error enable the use of smaller shunt resistors
to reduce power consumption, board space and BOM.
Other built-in functions include current feedback via dedicated internal shunt resistors
and a temperature sensing device.
In addition, the reduced number of connections and the discrete implementation leads to the potential use of three shunt resistors
via low-cost isolation on digital data paths, instead of using significantly more expensive isolated sensors.
Accent now offers two Stabilization Kits consisting of series and shunt resistors
that simplify the modification of the loading of the device-under-test (DUT) to render it stable during measurement.