Sendyne SFP100 Current Measurement IC Named 2014 EE Times and EDN ACE Award Finalist in the Ultimate Products: Analog ICs Category
Current Measurement IC Designed for Battery Monitoring of Electric Vehicles (EVs), Grid Storage and Photovoltaic Arrays

New York, New York, March 14, 2014 –Sendyne today announces that the company’s SFP100 IC has been named a UBM Tech 2014 EE Times and EDN ACE Award finalist in the Ultimate Products: Analog ICs category. The SFP100 is a high precision IC that simultaneously measures bi-directional DC current through a resistive shunt, voltage and temperature, and provides accumulated charge value in an internal Coulomb counter.

Finalists, chosen by a panel of EE Times and EDN editors, as well as industry experts, were selected from among the most significant products introduced in 2013 in 12 categories, and “showcase the best of the best in today's electronics industry”.  UBM Tech editors will choose the final winners, which will then be announced live at the ACE Awards event on April 1 in San Jose, Calif., during the EE Live! Conference and Expo.

Sendyne conducts active research and product development in all critical aspects of energy storage management.  The Sendyne SFP100 was designed to address the unique requirements of battery monitoring in energy storage systems – such as those used for electric vehicles and grid storage – and photovoltaic arrays, where large variations of current and accumulated charge (Coulomb count) need to be monitored accurately. Even slight offset errors in current measurement in these systems accrue over time, leading to incorrect predictions of the system energy capacity.

The Sendyne SPF100 achieves a maximum voltage offset error of less than ±150 nanovolts (±0.15μV) for the measurements of the voltage drop across a shunt.  Due to Sendyne’s proprietary automatic “Continuous Calibration” patented and patent pending technology, this performance is guaranteed throughout a wide temperature range of –40°C to +125°C. Moreover, when an EMI filter is situated between the shunt and the SFP100’s inputs, the IC will compensate for any thermoelectric errors generated in that filter. 

By contrast, the maximum offset error realized by today’s state-of-the-art IC operational amplifiers is ±1μV at 25°C and ±2.35μV over a commercial temperature range. However, due to other factors such as external thermoelectric errors, high-performance amplifiers are not generally used for shunt measurements; commonly utilized ICs have offset voltages on the order of ±1000μV. Thus, the SFP100 voltage offset error would typically be smaller by over three orders of magnitude in a practical application.

Because of the low voltage offset error, the IC enables field use of ultra-low resistance shunts (even in the sub-100 nano-ohm region) for sensing currents from kiloamperes down to milliamperes.

The SFP100 also measures bi-polar voltage, temperatures, and is qualified to AECQ100 for the automotive temperature range of –40°C to +125°C.




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