NCV7608
www.onsemi.com
22
Driver OnDriver OnDriver Off Driver OnCSB
No Fault Fault No Fault FaultSO
TW is detected
Driver continues to run
Thermal Warning
condition is removed
TW is detected
Driver continues to be off
No TW
detected
Figure 33. Thermal Warning Timing Diagram
Driver OnDriver OffDriver On
CSB
Fault
Fault No Fault
SO
T<(175°C-30°C)
TSD (T > 175°C)
Driver Off
Driver
Turns On
Fault Reset
Figure 34. Thermal Shutdown Timing Diagram
Power Supply Fail
VS Overvoltage (OV) or undervoltage (UV) is reported
using bit #15 (PSM) in the SO output data register. This is
a latched event.
Drivers will shut off during VS OV or UV.
When coming out of VS OV or UV, the drivers will take
on the state determined by the last valid SPI frame.
The VS Power Supply Monitoring bit (bit #15) will be
reset by any valid SPI frame.
