Data Brief
For further information contact your local STMicroelectronics sales office.
June 2008 Rev 1 1/6
6
STEVAL-IFP010V1
Demonstration board for the VNI2140J
dual high-side, solid-state smart power relay
Features
■ Output current: 1 A per channel
■ Shorted load protection
■ Junction over-temperature protection
■ Case over-temperature protection for thermal
independence of the channels
■ Non-simultaneous TCSD (thermal case
shutdown) restart for the various channels
■ Protection against loss of ground
■ Current limitation
■ Under-voltage shutdown
■ Open load in OFF state and short to V
CC
detection
■ Open drain diagnostic outputs
■ 3.3 V CMOS/TTL compatible inputs
■ Fast demagnetization of inductive loads
■ Conforms to IEC 61131-2 supply voltage: +4 V
to +36 V
Description
This demonstration board is based on the
VNI2140J, a monolithic device designed using
ST’s VIPower technology for driving two
independent resistive or inductive loads with one
side connected to ground. Active current limitation
prevents the dropping of system power supply in
case of a shorted load. Built-in thermal shutdown
protects the chip from over-temperature and
short-circuit. In overload condition, channel turns
OFF and back ON automatically in order to
maintain the junction temperature between TTSD
and TR. If this condition causes case temperature
to reach TCSD, the overloaded channel is turned
OFF and will restart only when case temperature
has decreased down to TCR.
In cases where more than one channel is in
overload, the TCSD restart will not be
simultaneous, in order to prevent high peak
current from the supply. Non overloaded channels
continue to operate normally. The open drain
diagnostics output indicates over-temperature.
STEVAL-IFP010V1
www.st.com
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