Overview
The ADuM3190WSRQZ is a high stability isolated error amplifier produced by Analog Devices Inc. It is based on Analog Devices' iCoupler® technology, making it ideal for linear feedback power supplies. This component offers significant improvements in transient response, power density, and stability compared to traditional optocoupler and shunt regulator solutions. The ADuM3190WSRQZ features a stable transfer function over its lifetime and across a wide temperature range of −40°C to +125°C, ensuring reliable performance in various conditions.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Comments |
|---|---|---|---|---|---|
| Operating Range, Side 1 (VDD1) | 3.0 | 20 | V | ||
| Operating Range, Side 2 (VDD2) | 3.0 | 20 | V | ||
| Supply Current, Side 1 (IDD1) | 1.4 | 2.0 | mA | ||
| Supply Current, Side 2 (IDD2) | 2.9 | 5.0 | mA | ||
| Bandwidth | 400 kHz | ||||
| Isolation Voltage | 2.5 kV rms | ||||
| Reference Voltage | 1.225 V | ||||
| Output Voltage, EAOUT | ±3 mA | Low Voltage: 0.4 V, High Voltage: 2.4 V to 2.7 V | |||
| Output Voltage, EAOUT2 | ±1 mA | Low Voltage: 0.3 V to 0.6 V, High Voltage: 4.8 V to 5.4 V | |||
| Noise, EAOUT | 1.7 mV rms | ||||
| Noise, EAOUT2 | 4.8 mV rms | ||||
| Ambient Temperature Range | −40°C | +125°C | |||
| Maximum Junction Temperature | 150°C |
Key Features
- Stability in Isolated Feedback Applications: The ADuM3190WSRQZ offers 0.5% initial accuracy and 1% accuracy over the full temperature range, ensuring stable performance.
- Wideband Operational Amplifier: Supports various power supply loop compensation techniques.
- High Accuracy Reference Voltage: A 1.225 V reference voltage is included for comparing with the supply output setpoint.
- Low Power Operation: Total current consumption is less than 7 mA.
- Wide Voltage Supply Range: Operates with VDD1 and VDD2 ranging from 3 V to 20 V.
- High Isolation Voltage: 2.5 kV rms isolation voltage rating.
- Safety and Regulatory Approvals: UL recognition, CSA Component Acceptance Notice, and VDE certificate of conformity.
- Compact Packaging: Packaged in a small 16-lead QSOP package.
- Automotive Qualification: Qualified for automotive applications.
Applications
- Linear Power Supplies: Ideal for feedback control in linear power supplies.
- Inverters: Used in inverter systems for stable feedback control.
- Uninterruptible Power Supply (UPS): Enhances stability and reliability in UPS systems.
- DOSA-compatible Modules: Compatible with DOSA (Distributed-power Open Standards Alliance) modules.
- Voltage Monitors: Used in voltage monitoring applications.
- Automotive Systems: Qualified for use in automotive systems.
Q & A
- What is the primary application of the ADuM3190WSRQZ?
The ADuM3190WSRQZ is primarily used in linear feedback power supplies.
- What is the isolation voltage rating of the ADuM3190WSRQZ?
The ADuM3190WSRQZ has a 2.5 kV rms isolation voltage rating.
- What is the temperature range of the ADuM3190WSRQZ?
The ADuM3190WSRQZ operates over a temperature range of −40°C to +125°C.
- What is the reference voltage provided by the ADuM3190WSRQZ?
The ADuM3190WSRQZ provides a high accuracy 1.225 V reference voltage.
- Is the ADuM3190WSRQZ qualified for automotive applications?
- What is the bandwidth of the ADuM3190WSRQZ?
The bandwidth of the ADuM3190WSRQZ is 400 kHz.
- What are the safety and regulatory approvals for the ADuM3190WSRQZ?
The ADuM3190WSRQZ has UL recognition, CSA Component Acceptance Notice, and VDE certificate of conformity.
- What is the package type of the ADuM3190WSRQZ?
The ADuM3190WSRQZ is packaged in a 16-lead QSOP package.
- How does the ADuM3190WSRQZ compare to optocoupler-based solutions?
The ADuM3190WSRQZ offers a stable transfer function over its lifetime and across a wide temperature range, unlike optocoupler-based solutions which have uncertain current transfer ratios.
- What are some common applications of the ADuM3190WSRQZ besides linear power supplies?
Besides linear power supplies, the ADuM3190WSRQZ is used in inverters, UPS systems, DOSA-compatible modules, voltage monitors, and automotive systems.
