TLE5250 Datasheet, PDF (8/22 Pages) Siemens Semiconductor Group – 2.5-A High Performance Smart Power Stepper-Motor Driver with Diagnostic Interface

TLE 5250
Bits 10, 11
With these bits it is possible to detect the status of the gate voltages of the lower output-
stage transistors T3 and T4. Bit 10: status for EN edge transition. Bit 11: whether the
lower transistor has at all been turned on.
Bit 12 indicates whether the nominal/actual comparator has switched. The comparator
switches when the output current is regulated.
Bits 13, 14, 15
These bits indicate the presence of overcurrent, undervoltage or overtemperature. A
fault is ORed and output direct by bit 0 on DI.
When the multiplexer is read out, bits 0 through 15 are output once non-inverted (Phase
= Low) and once inverted (Phase = High).
Bit Assignment in Error Register
Bit 0 =
Bit 1 =
Bit 2 =
Bit 3 =
Bit 4 =
Bit 5 =
Bits 2-5 =
Bit 6 =
Bit 7 =
Bit 8 =
Bit 9 =
High for overtemperature/undervoltage/overcurrent
always High
High when sink transistor Q1 turned on
High when sink transistor Q2 turned on
High when source transistor Q1 turned on
High when source transistor Q2 turned on
momentary states for readout
bit 2 state for falling edge of Enable signal
bit 3 state for falling edge of Enable signal
bit 4 state for falling edge of Enable signal
bit 5 state for falling edge of Enable signal
Bits 6-10 represent status of outputs for negative change in edge of Enable signal
Bit 11 = High if gate-source voltage of sink transistors is > 5 V at moment of readout
Bits 11-15 are set if event occurs during switching (Enable = High)
Bit 11
Bit 12
Bit 13
Bit 14
Bit 15
= High if sink transistor V_GS > 5 V
= High if actual current lower than nominal current
= High if overcurrent detected on source transistors
= High if undervoltage detected
= High if thermal link tripped
The memories are erased by a rising edge on the Enable input.
Semiconductor Group
8
1998-02-01