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PULSE-WIDTH-MODULATION CONTROL CIRCUIT
SLVS052G – APRIL 1988 – REVISED JANUARY 2007
APPLICATION INFORMATION
How to Set Dead Time
The primary function of the dead-time control is to control the minimum off time of the output of the TL594. The
dead-time control input provides control from 5% to 100% dead time. The TL594 can be tailored to the specific
power transistor switches that are used, to ensure that the output transistors never experience a common
on-time. The bias circuit for the basic function is shown in
V
REF
R1
T
D
= R
T
C
T
(0.05 + 0.35R2)
R2 in k
W
R1 + R2 = 5 k
W
Dead-Time Control In
R2
Figure 7. Setting Dead Time
9
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