Isolation Amplifiers 2.5kV High Stability Isolated Error Amp
Features：
Stability in isolated feedback applications
0.5% initial accuracy
1% accuracy over the full temperature range
Compatible with Type II or Type III compensation networks
Reference voltage: 1.225 V
Compatible with DOSA
Low power operation: <7 mA total
Wide voltage supply range
VDD1: 3 V to 20 V
VDD2: 3 V to 20 V
Bandwidth: 400 kHz
Isolation voltage: 2.5 kV rms
Safety and regulatory approvals
UL recognition: 2500 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice 5A
VDE certificate of conformity DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 VIORM = 565 V peak
Wide temperature range
−40°C to +125°C ambient operation
150°C maximum junction temperature
Qualified for automotive applications
The ADuM3190 is an isolated error amplifier based on Analog Devices, Inc., iCoupler® technology. The ADuM3190 is ideal for linear feedback power supplies. The primary side controllers of the ADuM3190 enable improvements in transient response, power density, and stability as compared to commonly used optocoupler and shunt regulator solutions.
Unlike optocoupler-based solutions, which have an uncertain current transfer ratio over lifetime and at high temperatures, the ADuM3190 transfer function does not change over its lifetime, and it is stable over a wide temperature range of −40°C to +125°C.
Included in the ADuM3190 is a wideband operational amplifier for a variety of commonly used power supply loop compensation techniques. The ADuM3190 is fast enough to allow a feedback loop to react to fast transient conditions and overcurrent conditions. Also included is a high accuracy 1.225 V reference to compare with the supply output setpoint.
The ADuM3190 is packaged in a small 16-lead QSOP package for a 2.5 kV rms isolation voltage rating.
Applications
Linear power supplies
Inverters
Uninterruptible Power Supply (UPS)
DOSA-compatible modules
Voltage monitors
Automotive systems
