Catalog
2.5kVrmsIsolated Error Amplifier
Key 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 rangeVDD1: 3 V to 20 VVDD2: 3 V to 20 V
• VDD1: 3 V to 20 V
• VDD2: 3 V to 20 V
• Bandwidth: 400 kHz
• Isolation voltage: 2.5 kV rms
• Safety and regulatory approvalsUL recognition: 2500 V rms for 1 minute per UL 1577CSA Component Acceptance Notice 5AVDE certificate of conformity DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 VIORM= 565 V peak
• 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
Description
AI
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.ApplicationsLinear power suppliesInvertersUninterruptible Power Supply (UPS)DOSA-compatible modulesVoltage monitorsAutomotive systems
