Current sense amplifiers are integrated circuits with operational amplifiers and sense resistors that are used in measuring the amplitude and direction of current in circuits. There are many types of amplifiers. Examples include a differential current sense amplifier, high-accuracy current-sense amplifier, high-side current sense amplifier, and a high voltage current sense amplifier. A differential current sense amplifier is generally used for battery-operated devices that require both charge and discharge currents to be monitored. A high-accuracy current-sense amplifier facilitates current sharing between various DC/DC converter modules in addition to current sensing. As this causes various modules to be paralleled, current sharing ensures reliable operation. A high-side current sense amplifier employs a high-side monitor that is connected directly to the power source. A high-side current sense amplifier can identify any failure downstream and also initiate appropriate corrective measures. A high-side current sense amplifier can measure load current as well as tolerate any level of high voltage within the limitations in the external parts of the equipment. Other current sense amplifiers are also commonly available.