Overview
The ADuM4146BRWZ-RL, produced by Analog Devices Inc., is a single-channel gate driver optimized for driving silicon carbide (SiC) and metal-oxide semiconductor field effect transistors (MOSFETs). This device utilizes Analog Devices' iCoupler® technology to provide isolation between the input signal and the output gate drive, ensuring robust and reliable operation. The ADuM4146BRWZ-RL features a Miller clamp, which is essential for robust SiC turn-off with a single-rail supply, and includes desaturation detection and fault detection mechanisms for enhanced protection.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Short-circuit source current (0 Ω gate resistance) | 11 A | - | - |
| Short-circuit sink current (0 Ω gate resistance) | 9 A | - | - |
| Peak current (2 Ω gate resistance) | 4.61 A | - | - |
| Output voltage range | Up to 30 V | - | - |
| Supply Voltages (VDD1) | 2.5 V to 6 V | - | Referenced to VSS1 |
| Supply Voltages (VDD2) | 12 V to 30 V | - | Referenced to GND2 |
| Temperature Range (TA) | -40°C to +125°C | - | - |
| Isolation Voltage | 5000 Vrms | - | - |
| Package | 16-SOIC | - | - |
Key Features
- High voltage isolated bipolar gate driver with fault detection and Miller clamp.
- Optimized for driving silicon carbide (SiC) and MOSFETs.
- Desaturation detection circuit for protection against high voltage short-circuit SiC operation.
- Internal 500 µA current source and optional external current source for noise immunity.
- Multiple undervoltage lockout (UVLO) options on VDD2.
- Isolated communication of control information between high voltage and low voltage domains.
Applications
The ADuM4146BRWZ-RL is suitable for various high-power applications, including but not limited to:
- Power supplies and DC-DC converters.
- Motor control and drive systems.
- Renewable energy systems, such as solar and wind power inverters.
- Electric vehicle (EV) charging systems and EV powertrains.
- Industrial automation and control systems.
Q & A
- What is the primary function of the ADuM4146BRWZ-RL?
The ADuM4146BRWZ-RL is a single-channel gate driver optimized for driving silicon carbide (SiC) and MOSFETs. - What is the isolation voltage of the ADuM4146BRWZ-RL?
The isolation voltage is 5000 Vrms. - What are the supply voltage ranges for VDD1 and VDD2?
VDD1 ranges from 2.5 V to 6 V, and VDD2 ranges from 12 V to 30 V. - What is the temperature range for the ADuM4146BRWZ-RL?
The temperature range is -40°C to +125°C. - Does the ADuM4146BRWZ-RL have built-in protection mechanisms?
Yes, it includes desaturation detection and fault detection mechanisms. - What package type is the ADuM4146BRWZ-RL available in?
The device is available in a 16-SOIC package. - Can the ADuM4146BRWZ-RL operate with both unipolar and bipolar secondary supplies?
Yes, it can operate with both unipolar and bipolar secondary supplies. - What is the purpose of the Miller clamp in the ADuM4146BRWZ-RL?
The Miller clamp provides robust SiC turn-off with a single-rail supply when the gate voltage drops to less than 2 V. - Does the ADuM4146BRWZ-RL support isolated communication between high and low voltage domains?
Yes, it supports isolated communication of control information between the high voltage and low voltage domains. - What are some common applications for the ADuM4146BRWZ-RL?
Common applications include power supplies, motor control systems, renewable energy systems, EV charging systems, and industrial automation.
