Overview
The ADUM3221WBRZ-RL7, produced by Analog Devices Inc., is a high-performance isolated 4 A dual-channel gate driver. This component utilizes Analog Devices' iCoupler® technology, combining high-speed CMOS and monolithic transformer technology to provide superior isolation and performance characteristics. It offers true galvanic isolation between the input and each output, enabling voltage translation across the isolation barrier. This device is particularly useful in applications requiring high-speed, low-latency, and reliable isolation, such as in power conversion systems and motor control.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Number of Output Drivers | 2 | - | Dual-channel gate driver |
| Maximum Data Rate | 1 MHz | - | At VDD2 = 10 V, CL = 2 nF |
| Maximum Propagation Delay | 60 ns | ns | tDLH, tDHL at VDD2 = 10 V, CL = 2 nF |
| Channel-to-Channel Matching | 5 ns | ns | Absolute difference in propagation delays |
| Input Supply Voltage Range | 3.0 V to 5.5 V | V | Compatibility with lower voltage systems |
| Output Supply Voltage Range | 7.6 V to 18 V | V | For ADUM3221B models |
| Junction Temperature Range | -40°C to +125°C | °C | Operating temperature range |
| Common-Mode Transient Immunity (CMTI) | >25 kV/μs | V/μs | High common-mode transient immunity |
| Insulation Rating | 2500 V rms | V rms | For 1 minute per UL 1577 |
| Package Type | 8-lead SOIC | - | Narrow body, RoHS-compliant |
Key Features
- True Galvanic Isolation: Provides isolation between the input and each output, enabling voltage translation across the isolation barrier.
- High-Speed Operation: Supports data rates up to 1 MHz and propagation delays as low as 60 ns.
- High Common-Mode Transient Immunity: Greater than 25 kV/μs, ensuring robust performance in noisy environments.
- Default Output Low Characteristic: Essential for gate drive applications to prevent unintended switching.
- Thermal Shutdown Protection: Protects the device from overheating by shutting down at temperatures above 150°C.
- Small Footprint and Low Profile: 8-lead SOIC package, RoHS-compliant, and suitable for space-constrained designs.
- Automotive Qualification: Qualified for automotive applications, meeting stringent reliability and performance standards.
Applications
- Isolated Synchronous DC-to-DC Converters: Ideal for isolated power conversion systems where high-speed and reliable isolation are critical.
- MOSFET/IGBT Gate Drivers: Suitable for driving power MOSFETs and IGBTs in various power management and motor control applications.
- Automotive Systems: Qualified for use in automotive environments, including motor control, power conversion, and other high-reliability applications.
- Industrial Control Systems: Used in industrial control systems where isolation and high-speed operation are necessary for reliable performance.
Q & A
- What is the maximum data rate supported by the ADUM3221WBRZ-RL7?
The ADUM3221WBRZ-RL7 supports data rates up to 1 MHz.
- What is the maximum propagation delay of the ADUM3221WBRZ-RL7?
The maximum propagation delay is 60 ns.
- What is the common-mode transient immunity (CMTI) of the ADUM3221WBRZ-RL7?
The CMTI is greater than 25 kV/μs.
- What is the insulation rating of the ADUM3221WBRZ-RL7?
The insulation rating is 2500 V rms for 1 minute per UL 1577.
- What is the junction temperature range of the ADUM3221WBRZ-RL7?
The junction temperature range is from -40°C to +125°C.
- Does the ADUM3221WBRZ-RL7 have thermal shutdown protection?
Yes, it has thermal shutdown protection at temperatures above 150°C.
- What is the package type of the ADUM3221WBRZ-RL7?
The package type is an 8-lead SOIC, narrow body, and RoHS-compliant.
- Is the ADUM3221WBRZ-RL7 qualified for automotive applications?
Yes, it is qualified for automotive applications.
- What are some typical applications of the ADUM3221WBRZ-RL7?
Typical applications include isolated synchronous DC-to-DC converters, MOSFET/IGBT gate drivers, and automotive systems.
- Does the ADUM3221WBRZ-RL7 allow both outputs to be on at the same time?
Yes, the ADUM3221WBRZ-RL7 allows both outputs to be on at the same time.
