UCC27423, UCC27424, UCC27425
SLUS545D –NOVEMBER 2002–REVISED MAY 2013
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VDD
UCC27423
ENBA
1
2
3
4
ENBB
OUTA
8
7
INPUT
D
SCHOTTKY
10Ω
INA
D
ADJ
5.5 V
C2
µ
C3
100 F
µ
+
1 F
GND
INB
VDD 6
OUTB
5
V
SNS
100 F
AL EL
µ
R
SNS
1 µF
CER
0.1
Ω
UDG-01066
Figure 4.
Operational Waveforms and Circuit Layout
Figure 5 shows the circuit performance achievable with a single driver (1/2 of the 8-pin IC) driving a 10-nF load.
The input pulsewidth (not shown) is set to 300ns to show both transitions in the output waveform. Note the linear
rise and fall edges of the switching waveforms. This is due to the constant output current characteristic of the
driver as opposed to the resistive output impedance of traditional MOSFET-based gate drivers.
VDD
UCC27423
ENBA
1
2
3
4
ENBB
8
7
6
5
INPUT
INA
OUTA
GND
INB
VDD
OUTB
C
LOAD
2.2µF
1
F
µ
CER
UDG-01067
Figure 5.
8
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