BTS 6480SF Infineon Technologies, BTS 6480SF Datasheet - Page 28

• 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

The applied clock signal can be monitored via SPI in the standard diagnosis. The standard diagnosis bit CLE
provides the information in device operation mode (not during stand-by), if the applied clock is above or below the
threshold
diagnosis readout. The reset of the bit CLE is performed only, if the bit CLE is set.
Table 5
Note: A changing of the HWCR.CLKTRIM will also change the CLE thresholds.
7.2.2
The SPOC - BTS6480SF provides also an internal clock signal
the register HWCR.CLK to 1
For adjusting the clock signal, a trimming of
decreased or increased in steps of
7.3
The PWM duty cycle of each output is defined by the SPI register DCCRn.DC register from 0 to 256. The ON-state
duty cycle is (in %):
The minimum duty cycle, which can be set (except from 0 %), is according to
of the output voltage depends on the switching times
output duty cycle can differ from the set duty cycle.
7.4
For optimized EMC performances phase shifts between all channels can be programmed via the SPI register
CHCRn.PHS. The phase shifts refer to one common start point. Please refer to
phase shifts can be selected.
Data Sheet
f
DC
External Clock Status
CLE
0
1
PWM
b
b
PWM
=
f
------------------------------------- -
256 prescaler
=
INT
f
DCCRn.DC 100
------------------------------------------------- -
PCLK(TH)
External Clock Monitoring
Internal PWM Clock
PWM Duty Cycle
Channel Phase Shift
x k
256
TRIM
according to the following table. The bit CLE will be reset after every successful standard
b
.
Clock Frequency
f
f
PCLK
PCLK
k
TRIM
>
<
f
f
PCLK(TH)
PCLK(TH)
.
f
INT
via the SPI register HWCR.CLK_TRIM can be done.
t
ON
28
, t
OFF
f
an
INT
d
. The internal clock frequency is used by setting
the connected load. Therefore, the observed
Equation (3)
Figure
Automatic PWM Generator
SPOC - BTS6480SF
8. Up to eight different
0.39 %. The duty cycle
Rev. 1.0, 2010-04-12
f
PWM
can be
(2)
(3)