Datasheet ADUM3190 (Analog Devices)

High Stability Isolated Error Amplifier Data Sheet ADuM3190 FEATURES GENERAL DESCRIPTION Stability in isolated feedback applications
The ADuM31901 is an isolated error amplifier based on Analog
0.5% initial accuracy
Devices, Inc., iCoupler® technology. The ADuM3190 is ideal for
1% accuracy over the full temperature range
linear feedback power supplies. The primary side controllers of
Compatible with Type II or Type III compensation networks
the ADuM3190 enable improvements in transient response,
Reference voltage: 1.225 V
power density, and stability as compared to commonly used
Compatible with DOSA
optocoupler and shunt regulator solutions.
Low power operation: <7 mA total
Unlike optocoupler-based solutions, which have an uncertain
Wide voltage supply range
current transfer ratio over lifetime and at high temperatures, the
VDD1: 3 V to 20 V
ADuM3190 transfer function does not change over its lifetime,
VDD2: 3 V to 20 V
and it is stable over a wide temperature range of −40°C to +125°C.
Bandwidth: 400 kHz Isolation voltage: 2.5 kV rms
Included in the ADuM3190 is a wideband operational amplifier
Safety and regulatory approvals
for a variety of commonly used power supply loop compensation
UL recognition: 2500 V rms for 1 minute per UL 1577
techniques. The ADuM3190 is fast enough to allow a feedback
CSA Component Acceptance Notice #5A
loop to react to fast transient conditions and overcurrent condi-
VDE certificate of conformity
tions. Also included is a high accuracy 1.225 V reference to
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
compare with the supply output setpoint.
VIORM = 565 V peak
The ADuM3190 is packaged in a small 16-lead QSOP package
Wide temperature range
for a 2.5 kV rms isolation voltage rating.
−40°C to +125°C ambient operation 150°C maximum junction temperature Qualified for automotive applications APPLICATIONS Linear power supplies Inverters Uninterruptible Power Supply (UPS) DOSA-compatible modules Voltage monitors Automotive systems FUNCTIONAL BLOCK DIAGRAM VDD1 1 16 VDD2 GND1 2 15 GND2 VREG1 3 REG UVLO UVLO REG 14 VREG2 REFOUT1 4 REF REF 13 REFOUT NC 5 12 +IN Tx EAOUT2 6 11 –IN Rx EAOUT 7 10 COMP
1
GND
00
8 9 GND 1 2
1335- 1 Figure 1. 1 Protected by U.S. Patents 5,952,849, 6,873,065 and 7,075,329. Other patents pending.
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Document Outline Features Applications General Description Functional Block Diagram Table of Contents Revision History Specifications Package Characteristics Regulatory Information Insulation and Safety Related Specifications Recommended Operating Conditions DIN V VDE V 0884-10 (VDE V 0884-10) Insulation Characteristics Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Test Circuits Applications Information Theory of Operation Accuracy Circuit Operation Isolated Amplifier Circuit Operation Application Block Diagram Setting the Output Voltage DOSA Module Application DC Correctness and Magnetic Field Immunity Insulation Lifetime Packaging and Ordering Information Outline Dimensions Ordering Guide Automotive Products