VN380 STMICROELECTRONICS [STMicroelectronics], VN380 Datasheet - Page 5

• Manufacturer Part Number: VN380
• Description: SMART SOLENOID DRIVER SOLID STATE RELAY
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

FUNCTIONAL DESCRIPTION
-
When the load current rise above the current cut off level, S1 is automatically switched off and the
devices operates in recirculation mode (S2 active). S1is latched off until A goes low and high again.
This default is not displayed by diagnostic flag.
-
If the load current is below the open load current level, the flag of the open load block is activated but
this default is displayed by the diagnostic output on the falling edge of input B and the diagnostic output
is latched at low level until input A goes low and high again. In case an open load is detected during an
active phase of input B, but disappears before a falling edge of input B, this default is not dispayed by
the diagnostic flag (see open load waveforms).
-
The device is internally protected against over temperatures by the thermal circuit protection. When the
device junction temperature exceeds the protection limit, S1 is automatically switched off. Therefore the
device operates in recirculation mode (S2 active). S1 remain latched off until V
again. This default is not dispayed by the diagnostic flag.
OVERVOLTAGE
During the ON state of S1 switch, if V
automatically switched off, therefore the device operates in recirculation mode.
FIGURE 1: SWITCHING PARAMETER TEST CONDITIONS
CURRENT CUT OFF
OPEN LOAD
THERMAL SHUTDOWN
pwr1
or V
pwr2
is rising above the threshold detection S1 is
pwr1
goes low and high
VN380
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