BTS 6480SF Infineon Technologies, BTS 6480SF Datasheet - Page 46

• Manufacturer Part Number: BTS 6480SF
• Manufacturer: Infineon Technologies

Specifications of BTS 6480SF

• Packages: PG-DSO-36
• Channels: 4.0
• Channel Mix: 2*4,5mohm+2*11mohm
• Led Mode: Yes
• Cranking Mode: No
• Pwm Engine Integrated: Yes

For diagnosis feedback at different operation modes, please see following table.
Table 6
Operation Mode
Normal Operation (OFF)
Short Circuit to GND
Thermal shut down
Short Circuit to V
Open Load
Inverse Current
Normal Operation (ON)
Short Circuit to GND
Dynamic Temperature Sensor shut down
Over Current shut down
Thermal shut down
Short Circuit to V
Open Load
Inverse Current
1) L = low level, H = high level, Z = high impedance, potential depends on leakage currents and external circuit x = undefined
2) The error flags are latched until they are transmitted in the standard diagnosis word via SPI
3) If the current sense multiplexer is set to Channel 0 to 3 and DRC.CSOL bit set
4) If the current sense multiplexer is set to Channel 0 to 3
5) The over current latch off flag is set latched and can be cleared by SPI command HWCR.CL
6) The over temperature flag is set latched and can be cleared by SPI command HWCR.CL
9.1
The standard diagnosis at the SPI interface provides information about each channel. The error flags, an OR
combination of the over temperature flags and the over load monitoring signals are provided in the SPI standard
diagnosis bits ERRn.
The over load monitoring signals are latched in the error flags and cleared each time the standard diagnosis is
transmitted via SPI. In detail, they are cleared between the second and third raising edge of the SCLK signal.
The over temperature flags, which cause an overheated channel to latch off, are latched directly at the gate control
block. The over current flags, which cause an channel 0 or 1 driving a too high current to switch off, are latched
like the over temperature flags. Those latches are cleared by SPI command HWCR.CL.
Please note: The over temperature and over current information is latched twice. When transmitting a clear latch
command (HWCR.CL), the error flag is cleared during command transmission of the next SPI frame and ready for
latching after the third raising edge of the SCLK signal. As a result, the first standard diagnosis information after a
CL command will indicate a failure mode at the previously affected channels although the thermal latches have
been cleared already. In case of continuous over load, the error flags are set again immediately because of the
over load monitoring signal.
9.2
There is a current sense signal available at pin IS which provides a current proportional to the load current of one
selected channel. The selection is done by a multiplexer which is configured via SPI.
Data Sheet
Operation Modes
Diagnosis Word at SPI
Load Current Sense Diagnosis
BB
BB
1)
Input Level
OUT.OUTn
L / 0
(OFF-state)
H / 1
(ON-state)
46
Output
Level V
GND
GND
Z
V
Z
> V
~
~ GND
Z
Z
Z
V
V
> V
BB
BB
BB
V
BB
BB
BB
OUT
Current
Sense I
Z
Z
Z
Z
Z
Z
I
Z
Z
Z
Z
< I
Z
Z
L
/ k
L
/ k
ILIS
ILIS
IS
Error Flag
ERRn
0
0
0
0
0
0
0
1
1
1
1
0
0
0
5)
6)
SPOC - BTS6480SF
Rev. 1.0, 2010-04-12
2)
SBM
DCR.SBM
1
1
x
0
0
0
0
1
x
x
x
0
0
0
3)
4)
Diagnosis