IX21844 Datasheet, PDF (1/14 Pages) IXYS Corporation – Programmable Dead-Time

INTEGRATED CIRCUITS DIVISION
Driver Characteristics
Parameter
Rating
V_OFFSET
I_{O +/-} (Source/Sink)
V_BIAS
600
1.4 / 1.8
10-20
Units
V
A
V
Features
• Floating Channel for Bootstrap Operation to +600V
with an Absolute Maximum Rating of +700V
• Programmable Dead-Time
• Outputs Can Source 1.4A and Sink 1.8A
• Gate Drive Supply Range From 10V to 20V
• Tolerant to Negative Voltage Transients:
dV/dt Immune
• 3.3V and 5V Logic Compatible
• Undervoltage Lockout for Both High-side and
Low-Side Outputs
• Matched Propagation Delays
Applications
• Switch Mode Power Supply
• Motor Driver Inverter
• DC/DC Converter
• Uninterruptible Power Supplies (UPS)
IX21844 Functional Block Diagram
IX21844
High Voltage Half-Bridge
Gate Driver
Description
The IX21844 is a high voltage IC that can drive high
speed MOSFETs and IGBTs that operate up to
+600V. The IX21844 is configured with dependent
high-side and low side referenced output channels
which can source 1.4A and sink 1.8A. The floating
high-side channel can drive an N-channel power
MOSFET or IGBT 600V from the common reference.
Manufactured on IXYS Integrated Circuits Division's
proprietary high-voltage BCDMOS on SOI (silicon on
isolator) process, the IX21844 is extremely robust and
virtually immune to negative transients. The UVLO
circuit prevents the turn-on of the MOSFET or IGBT
until there is sufficient V_BS or V_CC supply voltage. A
programmable dead-time can be set between 400ns
and 5us to insure that both the high-side and low-side
power MOSFET or IGBT are not enabled at the same
time. Propagation delays are matched for use in high
frequency applications.
The IX21844 is available in 14-pin DIP and 14-pin
SOIC (narrow body) packages. The 14-pin SOIC
(narrow body) package is also available in tape & reel.
Ordering Information
Part
Description
IX21844G 14-Pin DIP (25/Tube)
IX21844N 14-Pin SOIC (Narrow Body) (50/Tube)
IX21844NTR 14-Pin SOIC (Narrow Body) (2000/Reel)
IN
DT
+5V
SD
V_SS
DS-IX21844-R01
Input
&
Dead-Time
Control Logic
Level
Shift
V_SS / COM
Pulse
Generator
High
Voltage
Level
Shift
UVLO
RR
Q
S
Buffer
Level
Shift
V_SS / COM
LS Delay
Control
UVLO
Buffer
www.ixysic.com
V_B
HO
V_S
V_CC
LO
COM
1