ADUM1233 Datasheet, PDF (1/12 Pages) Analog Devices – Isolated, Precision Half-Bridge Driver, 0.1 A Output

Isolated, Precision Half-Bridge
Driver, 0.1 A Output
ADuM1233
FEATURES
Isolated high-side and low-side outputs
High side or low side relative to input: ±700 VPEAK
High side/low side differential: 700 VPEAK
0.1 A peak output current
High frequency operation: 5 MHz maximum
High common-mode transient immunity: >75 kV/μs
High temperature operation: 105°C
Wide body, 16-lead SOIC
UL1577 2500 V rms input-to-output withstand voltage
APPLICATIONS
Isolated IGBT/MOSFET gate drives
Plasma displays
Industrial inverters
Switching power supplies
GENERAL DESCRIPTION
The ADuM1233¹ is an isolated, half-bridge gate driver that
employs the Analog Devices, Inc. iCoupler® technology to
provide independent and isolated high-side and low-side
outputs. Combining high speed CMOS and monolithic
transformer technology, this isolation component provides
outstanding performance characteristics superior to
optocoupler-based solutions.
By avoiding the use of LEDs and photodiodes, this iCoupler
gate drive device is able to provide precision timing characteristics
not possible with optocouplers. Furthermore, the reliability and
performance stability problems associated with optocoupler
LEDs are avoided.
In comparison to gate drivers employing high voltage level
translation methodologies, the ADuM1233 offers the benefit of
true, galvanic isolation between the input and each output. Each
output can be operated up to ±700 VPEAK relative to the input,
thereby supporting low-side switching to negative voltages. The
differential voltage between the high side and low side can be as
high as 700 VPEAK.
As a result, the ADuM1233 provides reliable control over the
switching characteristics of IGBT/MOSFET configurations over
a wide range of positive or negative switching voltages.
FUNCTIONAL BLOCK DIAGRAM
V_IA 1
V_IB 2
V_DD1 3
GND₁ 4
DISABLE 5
NC 6
NC 7
V_DD1 8
ENCODE
DECODE
ENCODE
DECODE
Figure 1.
16 V_DDA
15 V_OA
14 GND_A
13 NC
12 NC
11 V_DDB
10 V_OB
9 GND_B
1 _{Protected by U.S. Patents 5,952,849 and 6,291,907.}
Rev. A
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