BTS6460SF INFINEON [Infineon Technologies AG], BTS6460SF Datasheet - Page 29

• Manufacturer Part Number: BTS6460SF
• Description: SPI Power Controller
• Manufacturer: INFINEON [Infineon Technologies AG]

Figure 9
7.5.2
In case of a reset SPOC device or a SPOC device in stand-by mode the synchronization can be done as follows:
•
•
•
•
•
With the next rising edge of the PWM clock signal
synchronously.
Data Sheet
Set the PWM frequencies, duty cycles, phase shifts of the reset device
Set the device phase shift for the reset SPOC device
Deactivate the automatic PWM generation of all SPOC devices in this daisy chain
With the next SPI transmission activate the automatic PWM generator of all SPOC devices by setting PCR.PST
within one MCS-frame
Activate the channels of the reset SPOC device via the SPI register OUT.OUTn
Phase Shifts between Devices
How to resynchronize a Reset SPOC
OUT.OUT0
OUT.OUT0
OUT.OUT1
PCR.PST
PCR.PST
V
V
V
V
PCLK
OUT0
OUT0
OUT1
t
t
Dev. phase shift1
Dev. phase shift1
DC
t
Ch. phase shift1
PWM0
DC
PWM1
29
f
PWM
the automatic PWM generation will start again
DevicePhaseShift.emf
t
t
t
t
t
t
t
t
t
Automatic PWM Generator
SPOC - BTS6460SF
Device 1
Device 2
Rev. 1.0, 2010-04-12