BTS 6480SF Infineon Technologies, BTS 6480SF Datasheet - Page 29

• 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

Figure 8
7.5
The SPI of SPOC - BTS6480SF provides daisy chain capability. In this configuration several devices are activated
by the same CS signal MCS. This allows the usage of only one PWM clock input signal
synchronous activation of channels of the different devices, device phase shift can be programmed at the register
PCR.DPSH.
7.5.1
For the usage of several SPOC devices in daisy chain configuration with automatic PWM generation the following
procedure is recommended:
•
•
•
•
•
With the next rising edge of the PWM clock signal
Figure 9
Note: If the PWM generator is started during stand-by, the power-on wake up time
Data Sheet
Wake up the devices by setting the DCR.MUX
Set the PWM frequencies, duty cycles, phase shifts of all channels
Set the device phase shift for each SPOC device differently
Activate the automatic PWM generator of all devices by setting PCR.PST within one MCS-frame
Activate the channels via the SPI registers OUT.OUTn
considered as delay until the automatic PWM generation will start.
for details.
Phase Shifts between Channels
Daisy Chain Operation with PWM Generator
Activation of Several SPOC Devices with PWM Generation
OUT.OUT0
OUT.OUT1
PCR.PST
V
V
V
PCLK
OUT0
OUT1
T
PCLK
DC
PWM0
t
Ch. phase shift1
T
PWM0
111
f
PWM
29
b
the automatic PWM generation will start. Please see
ChannelPhaseShift .emf
t
WU(PO)
Automatic PWM Generator
t
t
t
t
t
t
SPOC - BTS6480SF
(5.3.14) has to be
Rev. 1.0, 2010-04-12
f
PCLK
. To avoid a