BTS6480SF Datasheet, PDF (19/73 Pages) Infineon Technologies AG – SPI Power Controller

SPOC - BTS6480SF
Power Stages
6.2.1 Input Direct Drive
This mode is the default after the device’s wake up and reset. The input pins activate the channels during normal
operation (with default setting of bit IECR.INCG), stand-by mode and limp home mode. Channel 0 and the
external drivers can be activated only via the SPI-bit OUT.OUTn in direct drive mode. The inputs are linked directly
to the channels according to:
Table 1
Input Pin
IN1
IN2
IN3
Direct Drive Mode
Assigned channel, if IECR.INCG = 0_b
Channel 1
Channel 2
Channel 3
6.2.2 Input Assigned Drive
To activate the assigned drive function the register bit IECR.INCG needs to be set. In this mode all output
channels can be activated via the input pins. Channel 2, 3 and the two external drivers are assigned to only one
input pin. The following mapping is used:
Table 2
Input Pin
IN1
IN2
IN3
Assigned Drive Mode
Assigned channel, if IECR.INCG = 1_b
Channel 0
Channel 1
Channel 2, channel 3, external driver 0, external driver 1
6.3
Power Stage Output
The power stages are built to be used in high side configuration (Figure 6).
VBB
V_DS
V_BB
GND
OUT
V_OUT
Output.emf
Figure 6 Power Stage Output
The power DMOS switches with a dedicated slope, which is optimized in terms of EMC emission. Defined slew
rates and edge shaping allow lowest EMC emissions during PWM operation at low switching losses.
Data Sheet
19
Rev. 1.0, 2010-04-12