Isolated Half-Bridge Driver
with Integrated High-Side Supply
ADuM5230
Data Sheet
FEATURES
FUNCTIONAL BLOCK DIAGRAM
Integrated, isolated high-side supply
150 mW of secondary side power
Isolated high-side and low-side outputs
100 mA output source current, 300 mA output sink current
High common-mode transient immunity: >25 kV/μs
High temperature operation: 105°C
Adjustable power level
Wide body, 16-lead SOIC package
Safety and regulatory approvals
UL recognition: 2500 V rms for 1 minute per UL1577
Qualified for automotive applications
GND1
1
VDD1
15
VISO
3
14
GNDISO
4
13
DNC
VIA
5
╓
╜
ENCODE
DECODE
╓
╜
12
DNC
VIB
6
╓
╜
ENCODE
DECODE
╓
╜
11
GNDB
VDD1
7
10
VDDB
GND1
8
9
VOB
ADuM5230
DNC = DO NOT CONNECT. DO NOT CONNECT TO THIS PIN.
07080-001
2
GND1
MOSFET/IGBT gate drives
Automotive
Motor drives
Power supplies
VOA
VADJ
APPLICATIONS
16
ISOLATED
DC-TO-DC
CONVERTER
Figure 1.
GENERAL DESCRIPTION
The ADuM52301 is an isolated half-bridge gate driver that
employs Analog Devices, Inc., iCoupler® technology to provide
independent and isolated high-side and low-side outputs.
Combining CMOS and microtransformer technologies, this
isolation component contains an integrated dc-to-dc converter
providing an isolated high-side supply. This eliminates the cost,
space, and performance difficulties associated with external
supply configurations such as bootstrap circuitry. This highside isolated supply powers not only the ADuM5230 high-side
output but also any external buffer circuitry used with the
ADuM5230.
1
In comparison to gate drivers employing high voltage level
translation methodologies, the ADuM5230 offers the benefit
of true, galvanic isolation between the input and each output.
Each output can operate up to ±700 VP relative to the input,
thereby supporting low-side switching to negative voltages.
The differential voltage between the high side and low side
may be as high as 700 VP.
Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; 7,075,329; other pending patents.
Rev. C
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