Datasheet

Gate Driver
R
OL
R
G
C
GD
C
GS
C
OSS
V
DS
V
IN
I
SNK
V
IN
V
TH
ON OFF
Miller Turn-On Spike in V
GS
V
DS
of
MOSFET
V
GS
of
MOSFET
OUTL
UCC27511
UCC27512
www.ti.com SLUSAW9E –FEBRUARY 2012–REVISED DECEMBER 2013
Figure 24. Very Low Pull-Down Impedance In UCC27511, 4-A/8-A Asymmetrical Drive
(Output Stage Mitigates Miller Turnon Effect)
Figure 25 and Figure 26 illustrate typical switching characteristics of UCC27511.
Figure 25. Typical Turnon Waveform Figure 26. Typical Turnoff Waveform
(VDD = 10 V, C
L
= 1 nF) (VDD = 10 V, C
L
= 1 nF)
The driver-output voltage swings between VDD and GND providing rail-to-rail operation, thanks to the MOS-
output stage which delivers very low dropout. The presence of the MOSFET-body diodes also offers low
impedance to switching overshoots and undershoots. In many cases, external Schottky diode clamps are
eliminated. The outputs of these drivers are designed to withstand 500-mA reverse current without either
damage to the device or logic malfunction.
Copyright © 2012–2013, Texas Instruments Incorporated Submit Documentation Feedback 19
Product Folder Links: UCC27511 UCC27512