TL594_15 Datasheet, PDF (10/23 Pages) Unisonic Technologies – PULSE-WIDTH-MODULATION CONTROL CIRCUIT

TL594
SLVS052H – APRIL 1988 – REVISED JANUARY 2014
APPLICATION INFORMATION
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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
device. The dead-time control input provides control from 5% to 100% dead time. The TL594 device 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 Figure 7.
V_REF
R1
T_D = R_TC_T(0.05 + 0.35R2)
R2 in kW
Dead-Time Control In
R1 + R2 = 5 kW
R2
Figure 7. Setting Dead Time
10
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