Overview
The ADuM4221BRIZ-RL, produced by Analog Devices Inc., is a 4 A isolated, half bridge gate driver that utilizes the company's iCoupler® technology. This component provides independent and isolated high-side and low-side outputs, ensuring true galvanic isolation between the input and each output. It is designed for high-performance applications requiring precise timing and high common-mode transient immunity. The ADuM4221BRIZ-RL operates within a wide range of logic input voltages (2.5 V to 6.5 V) and output supply voltages (4.5 V to 35 V), making it compatible with various system configurations.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Logic Input Voltage | VDD1 | 2.5 | 6.5 | V | ||
| Output Supply Voltage | VDDA, VDDB | 4.5 | 35 | V | ||
| Input Supply Current, Quiescent | IDD1 (Q) | 1.4 | 2.4 | mA | Both Inputs Low (ADuM4221 Only) | |
| Output Supply Current, Per Channel, Quiescent | IDD2 (Q) | 1.4 | 2.6 | mA | Output Channel High | |
| Propagation Delay (Rising Edge) | tDLH | 19 | 25 | 33 | ns | CL = 2.2 nF, VDD1 = 5 V, VDDA and VDDB = 15 V, RG = 5.1 Ω |
| Propagation Delay (Falling Edge) | tDHL | 21 | 30 | 44 | ns | CL = 2.2 nF, VDD1 = 5 V, VDDA and VDDB = 15 V, RG = 5.1 Ω |
| Input to Output Resistance | RI-O | 1013 | Ω | |||
| Input to Output Capacitance | CI-O | 2.2 | pF | f = 1 MHz | ||
| Thermal Resistance (Junction to Ambient) | θJA | 45 | °C/W | Thermocouple located at center of package underside |
Key Features
- True Galvanic Isolation: Provides 5700 V rms isolation in an increased creepage wide body, 16-lead SOIC_IC package.
- Adjustable Dead Time: Available in models with adjustable dead time (ADuM4221), single input with adjustable dead time (ADuM4221-1), and no dead time control with dual input (ADuM4221-2).
- High-Speed CMOS and Monolithic Transformer Technology: Combines high-speed CMOS and monolithic transformer technology for superior performance characteristics.
- Multiple UVLO Options: Various undervoltage lockout (UVLO) thresholds for VDDA and VDDB, including Grade A (4.5 V), Grade B (7.5 V), and Grade C (11.6 V).
- High Common-Mode Transient Immunity: Offers high common-mode transient immunity of 150 kV/μs.
- High Junction Temperature Operation: Operates up to a junction temperature of 125°C.
- Compatibility with Lower Voltage Systems: Logic input voltage range from 2.5 V to 6.5 V, making it compatible with various system configurations.
Applications
- Switching Power Supplies: Ideal for use in switching power supplies due to its high isolation and fast switching capabilities.
- Isolated IGBT/MOSFET Gate Drives: Suitable for driving insulated gate bipolar transistors (IGBTs) and metal-oxide-semiconductor field-effect transistors (MOSFETs) in isolated configurations.
- Industrial Inverters: Used in industrial inverter applications requiring high reliability and isolation.
- Gallium Nitride (GaN)/Silicon Carbide (SiC) Compatible: Compatible with GaN and SiC power devices, enhancing performance in high-power applications.
Q & A
- What is the maximum output current of the ADuM4221BRIZ-RL?
The ADuM4221BRIZ-RL has a maximum output current of 4 A.
- What is the isolation voltage rating of the ADuM4221BRIZ-RL?
The ADuM4221BRIZ-RL provides 5700 V rms isolation.
- What are the available UVLO options for VDDA and VDDB?
The available UVLO options include Grade A (4.5 V), Grade B (7.5 V), and Grade C (11.6 V).
- What is the operating junction temperature range of the ADuM4221BRIZ-RL?
The operating junction temperature range is from -40°C to 125°C.
- What is the logic input voltage range of the ADuM4221BRIZ-RL?
The logic input voltage range is from 2.5 V to 6.5 V.
- What are the key applications of the ADuM4221BRIZ-RL?
The key applications include switching power supplies, isolated IGBT/MOSFET gate drives, industrial inverters, and GaN/SiC compatible systems.
- What is the propagation delay of the ADuM4221BRIZ-RL?
The propagation delay (rising edge) is between 19 ns and 33 ns, and (falling edge) is between 21 ns and 44 ns.
- Does the ADuM4221BRIZ-RL have adjustable dead time?
Yes, the ADuM4221 model has adjustable dead time, while the ADuM4221-1 has single input with adjustable dead time, and the ADuM4221-2 has no dead time control.
- What is the common-mode transient immunity of the ADuM4221BRIZ-RL?
The common-mode transient immunity is 150 kV/μs.
- What regulatory approvals does the ADuM4221BRIZ-RL have?
The ADuM4221BRIZ-RL has pending approvals from UL, CSA, VDE, and CQC.
