MC34023 ON Semiconductor, MC34023 Datasheet - Page 13

• Manufacturer Part Number: MC34023
• Description: (MC33023 / MC34023) High Speed Single-Ended PWM Controller
• Manufacturer: ON Semiconductor

resistor from V
information.
Additional dead time can be added by the addition of a dead time
R
T
R
Figure 27. Dead Time Addition
DT
ref
V
ref
to C
C
T
Oscillator
T
Master
. See text on Oscillator section for more
Reference
4
5
6
Figure 29. Current Mode Master/Slave Operation Over Short Distances
Figure 30. Synchronization Over Long Distances
Oscillator
4
5
6
16
Master
Oscillator
C
2200
T
R
430
T
MC34023, MC33023
4
5
6
1.0 k
4.7 k
C
http://onsemi.com
T
20
MMBT3904
R
13
T
MMBT3906
MMBD0914
V
need to be set 10% slower than the sync frequency. This circuit is also
used in Voltage Mode operation for master/slave operation. The clock
signal would be coming from the master which is set at the desired
operating frequency, while the slave is set 10% slower.
ref
The sync pulse fed into the clock pin must be at least 3.9 V. R
Figure 28. External Clock Synchronization
5.0 V
4
5
6
0 V
C
T
1.15 R
NC
R
Oscillator
T
T
Slave
4
5
6
C
T
4
5
6
Oscillator
Slave
Oscillator
T
and C
T