Current sense resistors are gaining in popularity due to their high measurement accuracy and relatively low cost compared to other technologies.  An important element of a micro hybrid DC/DC converter application design includes measurement of the sensing voltage. Devices are used to sense input current continuously by measuring the voltage across a dedicated current sense resistor.
 
Current sensing provides necessary precision channel-current balancing, and per-phase overcurrent protection.

 
An optimal sensing voltage solution for micro hybrid DC/DC applications is Microhm MMS2512/MMS3920 current sense resistors. Helping developers save energy while maximizing sensing performance in their designs, the shunts MMS2512/MMS3920  features low Temperature Coefficient of Resistance (TCR), resistance down to 0.0002 ohms for operating accuracy over wide temperature ranges and excellent long-term stability. Addressing extended temperature automotive requirements, they offer a wide operating temperature range (-55 to +170 °C), low thermal EMF and high current handling up to 120 Amps.

 
The MMS2512/MMS3920 current sense resistors represent a new generation of high power current sense resistors that match designers’ needs for an accurate device in higher power applications. In micro hybrid vehicle designs, they are key components in monitoring a voltage drop across the sense resistor and converting it to a current reading to assist in the efficient operation of the circuit.