The VNI4140K-32 is a quad high-side smart power Solid-state Relay made using STMicroelectronics VIPower technology, intended to drive four independent resistive, capacitive or inductive loads with one side connected to ground. Active current limitation avoids the system power supply dropping in case of shorted load. Built-in thermal shutdown protects the chip from over-temperature and short-circuit. In overload conditions, the channel turn-OFF and back on automatically so to maintain junction temperature between TTSD and TR. If this condition causes case temperature to reach TCSD, the overloaded channel is turned off and restarts only when case temperature has decreased down to TCR. In case of more than one channel in overload, restart of the overloaded channels is not simultaneous, in order to avoid high peak current from the supply. Non-overloaded channels continue operating normally. The open drain diagnostic outputs indicate over-temperature conditions.
● Shorted load protection
● Junction over-temperature protection
● Case over-temperature protection for thermal independence of the channels
● Thermal case shutdown restart not simultaneous for the various channels
● Protection against loss of ground
● Current limitation
● Under-voltage shutdown
● Open drain diagnostic outputs
● Fast demagnetization of inductive loads
● Conforms to IEC 61131-2
● ESD according to IEC 61000-4-2 up to ±25kV
● 3.3V CMOS/TTL compatible inputs
