1
Half -Bridge Driver
TF21084
July 2017
www.tfsemi.com
Rev 1.1
Features
Floating high-side driver in bootstrap operation to 600V
Drives two N-channel MOSFETs or IGBTs in a half bridge
conguration
Outputs tolerant to negative transients
Programmable dead time to protect MOSFETs
Wide logic and low side gate driver
supply voltage: 10V to 20V
Wide logic supply voltage oset voltage: -5V to 5V
Logic input (HIN and LIN*) 3.3V capability
Schmitt triggered logic inputs with internal pull down
Undervoltage lockout for high and low side drivers
Extended temperature range:-40°C to +125°C
Description
The TF21084 is a high voltage, high speed gate driver capable
of driving N-channel MOSFETs and IGBTs in a half bridge
conguration. TF Semiconductor’s high voltage process
enables the TF21084’s high side to switch to 600V in a bootstrap
operation.
The TF21084 logic inputs are compatible with standard TTL and
CMOS levels (down to 3.3V) to interface easily with controlling
devices. The driver outputs feature high pulse current buers
designed for minimum driver cross conduction. Programmable
dead time, by an external resistor, provides more system level
exibility.
The TF21084 is oered in PDIP-14 and SOIC-14(N) packages.
It operates over an extended -40 °C to +125 °C temperature range.
Typical Application
Ordering Information
PART NUMBER PACKAGE PACK / Qty MARK
TF21084-TUU
SOIC-14(N)
Tube / 50
YYWW
TF21084
Lot ID
TF21084-TUH T&R / 2500
TF21084-3BS PDIP-14 Tube / 25
YYWW
TF21084
Lot ID
Applications
DC-DC Converters
AC-DC Inverters
Motor Controls
Class D Power Ampliers
Year Year Week Week
R4
LIN*
DT
TF21084
V
SS
HIN
V
CC
HO
V
B
V
S
COM
LO
TO LOAD
Up to 600V
V
CC
HIN
LIN*
V
SS
SOIC-14(N) PDIP-14
ADVANCE
INFO
ADVANCE INFO
ADVANCE INFO
2
TF21084
Half Bridge Driver
July 2017
Pin Descriptions
Functional Block Diagram
Pin Diagrams
PIN NAME PIN DESCRIPTION
HIN Logic input for high-side gate driver output, in phase with HO (referenced to VSS).
LIN
*
Logic input for low side gate driver output, out of phase with LO (referenced to VSS)
VSS Logic ground
DT Programmable deadtime lead, referenced to VSS.
COM Low-side return
LO Low-side gate drive output
V
CC
Low-side and logic xed supply
V
B
High-side oating supply
HO High-side gate drive output
V
S
High-side oating supply return
V
S
V
SS
V
CC
8
9
10
7
6
5
COM
V
B
11
12
13
14
HO
4
3
2
1
LIN*
HIN
DT
LO
NC
NC
NC
NC
Top View: SOIC-14, PDIP-14
TF21084
Q
R
R
S
UV
Detect
HV Level
Shift
Pulse
Gen
UV
Detect
Delay
V
SS
/COM
Level
Shift
V
SS
/COM
Level
Shift
High Voltage Well
V
B
Vs
Vcc
HO
LIN*
DT
HIN
V
SS
Dead
time
V
CC
V
CC
+5V
LO
COM
TF21084
ADVANCE
INFO
ADVANCE INFO
ADVANCE INFO