ADUM5230 Datasheet, PDF (1/16 Pages) Analog Devices – Isolated Half-Bridge Driver with Integrated High-Side Supply

Isolated Half-Bridge Driver
with Integrated High-Side Supply
ADuM5230
FEATURES
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 (pending)
UL recognition: 2500 V rms for 1 minute per UL1577
APPLICATIONS
MOSFET/IGBT gate drive
Plasma display modules
Motor drives
Power supplies
Solar panel inverters
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 a bootstrap circuitry. This high-
side isolated supply powers not only the ADuM5230 high-side
output but also any external buffer circuitry used with the
ADuM5230.
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.
1 _{Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; 7,075,329; other}
pending patents.
FUNCTIONAL BLOCK DIAGRAM
GND₁ 1
V_DD1 2
V_{ADJ 3}
ISOLATED
DC/DC
CONVERTER
GND₁ 4
V_IA 5
╓
╜
V_IB 6
╓
╜
ENCODE
ENCODE
DECODE
╓
╜
DECODE
╓
╜
V_DD1 7
GND₁ 8
ADuM5230
NC = NO CONNECT
Figure 1.
16 V_OA
15 V_ISO
14 GND_ISO
13 NC
12 NC
11 GND_B
10 V_DDB
9 V_OB
Rev. 0
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