Overview
The ADuM7234BRZ-RL7 is an isolated, half-bridge gate driver produced by Analog Devices Inc. This component utilizes the iCoupler® technology, combining high-speed CMOS and monolithic transformer technology to provide independent and isolated high-side and low-side outputs. It is designed to offer superior performance characteristics compared to optocoupler-based solutions, avoiding the reliability and performance stability issues associated with optocoupler LEDs. The ADuM7234BRZ-RL7 is ideal for applications requiring precise timing and high isolation, making it a reliable choice for driving power MOSFETs and IGBTs.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Input Supply Voltage (VDD1) | 4.5 | 5 | 5.5 | V | |
| Output Supply Voltage (VDDA, VDDB) | 12 | 15 | 18 | V | |
| Peak Output Current | 4 | A | |||
| Working Voltage (High Side/Low Side) | ±350 | V peak | Relative to input | ||
| High Side/Low Side Differential Voltage | 350 | V peak | |||
| Maximum Operating Frequency | 1 | MHz | |||
| Common-Mode Transient Immunity | >25 | kV/µs | |||
| Operating Temperature Range | -40 | 105 | °C | ||
| Package Type | SOIC-16 |
Key Features
- Isolated high-side and low-side outputs
- Working voltage: ±350 V peak (high side or low side relative to input), 350 V peak differential
- 4 A peak output current
- High frequency operation: up to 1 MHz
- High common-mode transient immunity: >25 kV/µs
- High temperature operation: up to 105°C
- Narrow body, 16-lead SOIC package
- Safety and regulatory approvals: UL recognition 1000 V rms for 1 minute per UL 1577
Applications
- Isolated IGBT/MOSFET gate drives
- Plasma displays
- Industrial inverters
- Switching power supplies
Q & A
- What is the ADuM7234BRZ-RL7 used for? The ADuM7234BRZ-RL7 is used as an isolated half-bridge gate driver for driving power MOSFETs and IGBTs.
- What technology does the ADuM7234BRZ-RL7 use? It uses Analog Devices' iCoupler® technology, combining high-speed CMOS and monolithic transformer technology.
- What are the key benefits of using the ADuM7234BRZ-RL7 over optocoupler-based solutions? It provides precision timing characteristics, avoids reliability and performance stability issues associated with optocoupler LEDs, and offers superior performance.
- What is the maximum operating frequency of the ADuM7234BRZ-RL7? The maximum operating frequency is up to 1 MHz.
- What is the common-mode transient immunity of the ADuM7234BRZ-RL7? It has a common-mode transient immunity of >25 kV/µs.
- What are the safety and regulatory approvals for the ADuM7234BRZ-RL7? It has UL recognition for 1000 V rms for 1 minute per UL 1577.
- What is the operating temperature range of the ADuM7234BRZ-RL7? The operating temperature range is from -40°C to 105°C.
- What is the package type of the ADuM7234BRZ-RL7? It comes in a 16-lead SOIC package.
- What are some typical applications of the ADuM7234BRZ-RL7? Typical applications include isolated IGBT/MOSFET gate drives, plasma displays, industrial inverters, and switching power supplies.
- How does the ADuM7234BRZ-RL7 ensure high isolation? It ensures high isolation through the use of iCoupler® technology, which avoids the use of LEDs and photodiodes.
