Datasheet ADUM1234 (Analog Devices)

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Isolated, Precision Half-Bridge Driver, 0.1 A Output Data Sheet ADuM1234 FEATURES GENERAL DESCRIPTION Isolated high-side and low-side outputs
The ADuM12341 is an isolated, half-bridge gate driver that
High side or low side relative to input: ±700 V peak
uses the Analog Devices, Inc., iCoupler® technology to provide
High-side/low-side differential: 700 V peak
independent and isolated high-side and low-side outputs.
0.1 A peak output current
Combining high speed CMOS and monolithic transformer
CMOS input threshold levels
technology, this isolation component provides outstanding
High frequency operation: 5 MHz maximum
performance characteristics superior to optocoupler-based
High common-mode transient immunity: >75 kV/µs
solutions.
High temperature operation: 105°C
By avoiding the use of LEDs and photodiodes, this iCoupler gate
Wide body, RoHS-compliant, 16-lead SOIC
drive device is able to provide precision timing characteristics
Safety and regulatory approvals
not possible with optocouplers. Furthermore, the reliability and
UL recognition
performance stability problems associated with optocoupler LEDs
2500 V rms for 1 minute per UL 1577
are avoided.
VDE certificate of conformity DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
In comparison to gate drivers that use high voltage level translation
V
methodologies, the ADuM1234 offers the benefit of true galvanic
IORM = 560 V peak
isolation between the input and each output. Each output can be
APPLICATIONS
operated up to ±700 V peak relative to the input, thereby supporting
Isolated IGBT/MOSFET gate drives
low-side switching to negative voltages. The differential voltage
Plasma displays
between the high side and low side can be as high as 700 V peak.
Industrial inverters
As a result, the ADuM1234 provides reliable control over the
Switching power supplies
switching characteristics of IGBT/MOSFET configurations over a wide range of positive or negative switching voltages.
FUNCTIONAL BLOCK DIAGRAM ADuM1234 VIA 1 16 VDDA V 2 ENCODE DECODE IB 15 VOA VDD1 3 14 GNDA GND1 4 13 NC DISABLE 5 12 NC NC 6 11 VDDB NC 7 ENCODE DECODE 10 VOB
001
VDD1 8 9 GNDB
06920-
NC = NO CONNECT
Figure 1. 1 Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329.
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Document Outline Features Applications General Description Functional Block Diagram Table of Contents Revision History Specifications Electrical Characteristics Package Characteristics Regulatory Information Insulation and Safety-Related Specifications DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 Insulation Characteristics Recommended Operating Conditions Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Perfomance Characteristics Applications Information Common-Mode Transient Immunity Insulation Lifetime Outline Dimensions Ordering Guide