Slide 1 Slide 2 Slide 3 Slide 4 Slide 5 Slide 6 Slide 7 Slide 8 Slide 9 Slide 10 Product List
LTC2978-Slide8

This slide shows a summary of the LTC2978’s benefits which sets this IC apart. One high voltage monitoring input allows users to monitor the input supply rail up to 15V, while eight output channels at voltages from 0V to 6V can be monitored and servoed. Differential voltage sense inputs and DAC output pins naturally cancel any ground shifts and noise that may be present, thereby allowing the LTC2978 to truly achieve ±0.25% accuracy in a system. A soft connect feature on the DAC outputs ensures that the DACs do not induce transient voltages when connected. When setting a target value for the voltage output, the buffered DAC does a search and does not connect to the feedback node of the power supply under control until the DAC is typically within 1mV. Therefore, it will not perturb the power supply by slamming a correction voltage at its feedback node. Cascading the LTC2978 is achieved with a single connection for monitoring up to 72 channels. Also, if cascading, the FAULTB pins can be tied together in such a way as to create fault dependencies between any channels or combinations of channels. The LTC2978 offers the normal software write protection, as well as hardware write protection, so that the command registers cannot be accidentally written to. Analog Devices specifies, tests and guarantees the LTC2978’s EEPROM characteristics, including endurance (10,000 cycles) and data retention (10 years). Finally, the LTpowerPlay™ GUI software is feature-rich, interactive and powerful, allowing complete control over the power supply system from the comfort of the PC.

PTM Published on: 2011-05-13