Datasheet

6
5
4
1
2
3
IN+
IN-
GND
VDD
OUTH
OUTL
UCC27511
R1
R2
Q1
IN-
D1
C1
+
VOUT
VSOURCE
L1
C2
V+
4.5 V to 18 V
1
2
3
6
5
4
IN+
GND
VDD
IN-
GND
OUT
UCC27512
R3
Q1
V+
D1
C1
+
VSOURCE
L1
C2
IN-
4.5 V to 18 V
6
5
4
1
2
3
IN+
IN-
GND
VDD
OUTH
OUTL
UCC27511
R1
R2
Q1
IN+
D1
C1
+
VOUT
VSOURCE
L1
C2
V+
4.5 V to 18 V
1
2
3
6
5
4
IN+
GND
VDD
IN-
GND
OUT
UCC27512
R3
Q1
IN+
D1
C1
+
VOUT
VSOURCE
L1
C2
V+
4.5 V to 18 V
UCC27511
UCC27512
www.ti.com SLUSAW9E –FEBRUARY 2012–REVISED DECEMBER 2013
Typical Application Diagram
Typical application diagrams of UCC27511 and UCC27512 devices are shown below illustrating use in non-
inverting and inverting driver configurations. The UCC27511 device features a unique split output configuration
where the gate-drive current is sourced through OUTH pin and sunk through OUTL pin. This unique pin
arrangement allows user to apply independent turn-on and turn-off resistors to the OUTH and OUTL pins
respectively and easily control the turn-on and turn-off switching dV/dt. This pin arrangement, along with the low
pulldown impedance of the output driver stage, is especially handy in applications where a high C x dV/dt Miller
turnon immunity is needed (such as with GaN power switches, SR MOSFETs etc) and OUTL pin can be directly
tied to the gate of the power device.
Figure 19. Using Non-Inverting Input (IN- Is Grounded To Enable Output)
Figure 20. Using Inverting Input (IN+ Is Tied To VDD Enable Output)
NOTE
The UCC27516 features two ground pins, pin 2 and pin 5. TI recommends to tie both pins
together using PCB trace as close as possible to the device.
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Product Folder Links: UCC27511 UCC27512