sak-c868p-1rr Infineon Technologies Corporation, sak-c868p-1rr Datasheet - Page 86

• Manufacturer Part Number: sak-c868p-1rr
• Description: 8 - Bit Cmos Microcontroller
• Manufacturer: Infineon Technologies Corporation

highside switch should be active while the T12 counter value is above the compare value
(compare state =’1’), then the lowside switch should be active while the counter value is
below (compare state =’0’). The compare state, which may lead to an active output
(respecting other modulation sources and the trap functionality) can be selected by the
CC6xPS bits.
Figure 4-21
In most cases, the switching behavior of the connected power switches is not
symmetrical concerning the times needed to switch on and to switch off. A general
problem arises if the time to switch on is smaller than the time to switch off the power
device. In this case, a short-circuit in the inverter bridge leg occurs, which may damage
the complete system. In order to solve this problem by HW, this capture/compare unit
contains a programmable dead-time counter, which delays the passive to active edge of
the switching signals (the active to passive edge is not delayed), see
The dead-time generation logic (see
channels of T12. Each change of the CC6xST bits triggers the corresponding dead-time
counter (6 bit down counter, clocked with T12clk). The trigger pulse (DTCx_rl) leads to
a reload of the dead-time counter with the value, which has been programmed in bit field
User’s Manual
PWM-signals with Dead-time Generation
CC6xST AND DTCx_o
CC6xST AND DTCx_o
CC6xST
CC6xST
DTCx_o
T12
Figure
4-42
4-22) is built in a similar way for all three
On-Chip Peripheral Components
1
0
1
0
CC6x_T12_o
COUT6x_T12_o
COUT6xPS
Figure
CC6xPS
V 1.0, 2003-01
4-21.
C868