ADUM3220ARZ-RL7 - Isolated 4A Dual Gate Driver | Analog Devices
N.º de pieza: ADUM3220ARZ-RL7 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $3.42 | $3,42 |
| 10 | $3.08 | $30,80 |
| 100 | $2.74 | $274,00 |
| 500 | $2.47 | $1.235,00 |
| 1.000 | $2.19 | $2.190,00 |
ADUM3220ARZ-RL7 Descripción general
An isolated gate driver is a specialized integrated circuit that amplifies control signals from a low-voltage controller to drive power transistors (such as MOSFETs and IGBTs) while providing electrical isolation between the control side and the power stage. This isolation protects sensitive logic circuits from high-voltage transients and ground loops, which is essential in applications like motor drives, switch-mode power supplies, and solar inverters. The ADUM3220ARZ-RL7 belongs to the family of digital isolators and gate drivers, sitting between simple level shifters and more complex isolated power supplies.
Key features of the ADUM3220ARZ-RL7 include a 4 A peak output current, a maximum propagation delay of 60 ns, and a channel-to-channel matching of 5 ns. These precise timing characteristics ensure synchronized switching of power devices, reducing switching losses and electromagnetic interference. The device also supports high junction temperature operation, making it robust for industrial environments. Its 2500 Vrms isolation rating meets the requirements of many safety standards, and it is RoHS compliant and lead-free.
From a technical perspective, the ADUM3220ARZ-RL7 uses a monolithic transformer to couple signals across the isolation barrier, offering superior performance compared to optocouplers in terms of speed, reliability, and power consumption. The driver features a nominal UVLO (undervoltage lockout) of 4.1 V, ensuring that the output stage is fully enabled only when the supply voltage is adequate. This prevents erratic behavior during power-up and brownout conditions. The dual-channel configuration allows driving both high-side and low-side switches in a half-bridge topology with a single device.
Typical applications include isolated DC-DC converters, motor control inverters, and power supplies for industrial and automotive systems. The ADUM3220ARZ-RL7 is particularly well-suited for applications requiring high-speed switching and robust isolation, such as server power supplies and renewable energy inverters.
When designing with this device, it is important to provide adequate decoupling on the input and output supplies and to follow the recommended layout guidelines to minimize parasitic inductance. The propagation delay and matching specifications should be considered when designing dead-time for half-bridge circuits to prevent shoot-through current.
Alternativas directas para ADUM3220ARZ-RL7 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ADUM3220ARZ-RL7 (mismo factor de forma y huella) — difiere en Package, RoHS Status, Technology.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ADUM3220BRZ-RL7
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADUM3220ARZ
✅ Sustitución directa✓ En stock
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Ver hoja de datos →ADUM3220WBRZ
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADUM3221ARZ-RL7
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
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Ver hoja de datos →ADUM3220ARZ-RL7 Valores máximos y características eléctricas
| Number of Channels | 2 |
| Peak Output Current | 4 A |
| Isolation Voltage | 2500 Vrms |
| Propagation Delay | 60 ns (max) |
| Channel-to-Channel Matching | 5 ns (max) |
| UVLO Threshold | 4.1 V (nominal) |
| Encapsulado | 8-SOIC (0.154", 3.90mm Width) |
| Estilo de montaje | SMD/SMT |
| Technology | iCoupler (magnetic coupling) |
| Estado RoHS | RoHS Compliant |
| Lead Free Status | Lead Free |
| Velocidad de datos | N/A (gate driver) |
| Product Category | Galvanically Isolated Gate Drivers |
Configuración de pines de ADUM3220ARZ-RL7
| Pin 1 | VDD1 — Input supply voltage |
| Pin 2 | GND1 — Input ground |
| Pin 3 | VIA — Input channel A |
| Pin 4 | VIB — Input channel B |
| Pin 5 | GND2 — Output ground |
| Pin 6 | VOA — Output channel A |
| Pin 7 | VOB — Output channel B |
| Pin 8 | VDD2 — Output supply voltage |
Aplicaciones típicas
ADUM3220ARZ-RL7 es adecuado para 6 aplicacións: Isolated DC-DC Converters, Motor Control Inverters, Solar Inverters, Server Power Supplies, Electric Vehicle Chargers, Industrial Power Supplies.
Isolated DC-DC Converters
The ADUM3220ARZ-RL7 is ideal for isolated DC-DC converters where high-side and low-side MOSFETs need to be driven with galvanic isolation. Its 4 A peak output current ensures fast switching, reducing losses. The 2500 Vrms isolation protects the control circuitry from high-voltage transients. With 60 ns propagation delay, it supports high-frequency operation up to several hundred kHz, improving power density. The dual-channel configuration simplifies half-bridge designs, and the UVLO ensures reliable startup.
Recomendado
Motor Control Inverters
In motor control inverters, the ADUM3220ARZ-RL7 drives IGBTs or MOSFETs in each phase leg. The 4 A peak current charges the gate quickly, minimizing switching losses. The 5 ns channel-to-channel matching ensures balanced switching of high-side and low-side devices, reducing EMI. The isolation barrier protects the microcontroller from motor transients. Its compact 8-SOIC package saves board space in multi-axis drives. The device operates reliably in industrial temperature ranges, making it suitable for factory automation.
Recomendado
Solar Inverters
The ADUM3220ARZ-RL7 is used in solar inverters to drive the power stage while providing isolation between the PV array and the grid. Its 2500 Vrms isolation meets safety requirements. The 4 A output drives large IGBTs efficiently, and the fast propagation delay enables high switching frequencies for smaller magnetics. The UVLO prevents malfunction during low-light conditions. The device's robustness and long-term reliability are critical for 20-year solar installations.
Recomendado
Server Power Supplies
In server power supplies, the ADUM3220ARZ-RL7 drives the synchronous rectifier MOSFETs in isolated DC-DC converters. The 4 A peak current ensures fast turn-on/off, reducing body diode conduction losses. The 60 ns propagation delay allows tight control loops for fast transient response. The isolation protects the digital controller from the high-voltage bus. The small 8-SOIC package is ideal for high-density power supplies. The device's high junction temperature rating supports operation in confined server environments.
Recomendado
Electric Vehicle Chargers
The ADUM3220ARZ-RL7 is suitable for on-board chargers in electric vehicles, where isolation is required between the AC input and the battery. Its 2500 Vrms isolation meets automotive safety standards. The 4 A output drives SiC MOSFETs efficiently, and the fast propagation delay enables high-frequency operation to reduce transformer size. The device's robustness under high temperatures is essential for automotive environments. The dual-channel configuration simplifies full-bridge topologies.
Recomendado
Industrial Power Supplies
In industrial power supplies, the ADUM3220ARZ-RL7 provides isolated gate drive for MOSFETs in flyback or forward converters. The 4 A peak current ensures reliable switching, and the 2500 Vrms isolation protects control electronics from industrial voltage spikes. The 60 ns propagation delay allows precise PWM control. The device's wide operating temperature range and high reliability make it suitable for 24/7 operation in factories. Its compact package fits in DIN-rail mounted supplies.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ADUM3220ARZ-RL7 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ADUM3220BRZ-RL7 | ADUM3220ARZ | ADUM3220WBRZ | ADUM3221ARZ-RL7 | UCC21520DW |
|---|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | SOIC-16 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Peak Output Current | 4 A | 4 A | 4 A | 4 A | 4 A | 4 A |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 5000 Vrms |
| Propagation Delay | 60 ns (max) | 60 ns (max) | 60 ns (max) | 60 ns (max) | 60 ns (max) | 30 ns (max) |
| Number of Channels | 2 | 2 | 2 | 2 | 1 | 2 |
| RoHS Status | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Diferenciadores clave
- 4 A peak output current with 60 ns propagation delay (frente a UCC21520DW)
- iCoupler technology provides reliable magnetic isolation (frente a Optocoupler-based drivers)
- Dual-channel configuration in 8-SOIC package (frente a Single-channel drivers)
Notas de diseño
Ensure adequate decoupling on both VDD1 and VDD2 supplies. Place 0.1 uF ceramic capacitors as close as possible to the supply pins to handle the high peak currents during switching. A 10 uF bulk capacitor may be needed on VDD2 if the gate charge is large.
Minimize trace length between the driver outputs and the gate of the power transistor to reduce parasitic inductance. Use wide traces or copper pours for high-current paths. Keep the input and output grounds separate to maintain isolation integrity.
Do not exceed the absolute maximum ratings for supply voltages. The UVLO threshold of 4.1 V ensures proper operation, but verify that the supply voltage does not drop below this during transients. Also, ensure the input signals are within the recommended input voltage range to avoid damage.
Información de cumplimiento
RoHS compliant and lead-free per distributor data. AEC-Q100 not applicable as this is not an automotive-qualified part.
