SG1525A/SG1527A SERIES
OUTPUT SECTION
FIGURE 6 -OUTPUT CIRCUIT (�½ Circuit Shown)
FIGURE 7 - OUTPUT SATURATION CHARACTERISTICS
APPLICATION INFORMATION
For single-ended supplies, the driver outputs are grounded. The
V
C
terminal is switched to ground by the totem-pole source
transistors on alternate oscillator cycles.
In conventional push-pull bipolar designs, forward base drive is
controlled by R
1
- R
3
. Rapid turn-off times for the power devices
are achieved with speed-up capacitors C
1
and C
2
.
The low source impedance of the output drivers provides rapid
charging of power FET input capacitance while minimizing exter-
nal components.
11/91 Rev 1.3 10/96
Copyright
©
1996
Low power transformers can be driven directly by the SG1525A.
Automatic reset occurs during deadtime, when both ends of the
primary winding are switched to ground.
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