Analog Devices Inc. ADUM4120-1BRIZ-RL

Overview

ADUM4120-1BRIZ-RL from Analog Devices is a single-channel, isolated precision gate driver with 2.3 A peak output current, 4.5 V to 35 V high-side supply (VDD2), and 2.5 V to 6.5 V low-side logic supply (VDD1). It delivers 79 ns max falling-edge propagation delay, 150 kV/μs common-mode transient immunity, and Grade B UVLO (7.3 V rising threshold) for robust IGBT/MOSFET control in high-noise industrial inverters.

For engineers reviewing the ADUM4120-1BRIZ-RL datasheet, ADUM4120-1BRIZ-RL pinout, ADUM4120-1BRIZ-RL application, or ADUM4120-1BRIZ-RL equivalent, this page provides verified timing specs, isolation safety ratings (5 kV rms, VIORM = 849 V peak), SOIC-6W package layout guidance, and real-world GaN/SiC gate drive use cases - all confirmed against Analog Devices' Rev. 0 datasheet and official ordering guide.

Technical Context

The ADUM4120-1BRIZ-RL uses iCoupler® chip-scale transformers with OOK encoding to achieve galvanic isolation between CMOS input (VIN) and high-side gate output (VOUT), eliminating level-shifting circuitry. Its architecture integrates undervoltage lockout on both sides - fixed 2.5 V (VDD1) and selectable 7.3 V (VDD2, Grade B) - plus thermal shutdown at 155°C.

Unlike non-isolated drivers, it separates GND1 (logic side) and GND2 (power side) with 8 mm creepage and reinforced insulation per DIN V VDE V 0884-10. The glitch filter is disabled (denoted by "-1"), enabling faster response but requiring clean input signals in EMI-prone environments.

Key Specifications

Pinout & Package

ADUM4120-1BRIZ-RL uses a 6-lead wide-body SOIC package (SOIC_W) with 8 mm creepage and 8.3 mm PCB clearance, optimized for reinforced isolation in high-voltage gate drive applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar isolated gate driver applications.

Compared with Si8271BD-IS and MAX22701EASA+, the ADUM4120-1BRIZ-RL offers tighter UVLO grading (7.3 V), smaller SOIC-6W footprint, and proven iCoupler reliability in long-life industrial deployments - making it optimal for space-constrained, high-reliability GaN/SiC inverter designs requiring precise VDD2 brownout response.

Availability

ADUM4120-1BRIZ-RL is available at Aetrix Electronics and suitable for industrial motor drives, solar microinverters, GaN-based PFC circuits, and high-frequency SMPS requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ADUM4120-1BRIZ-RL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision signal chain and power management applications.

The ADUM4120-1BRIZ-RL belongs to Analog Devices' iCoupler® isolated gate driver product line, designed specifically for high-reliability, high-speed control of wide-bandgap power devices in industrial, energy, and automotive traction systems.

FAQ

What is the key difference between ADUM4120-1BRIZ-RL and ADUM4120BRIZ-RL?

The ADUM4120-1BRIZ-RL has the input glitch filter disabled, resulting in lower propagation delay (22–42 ns rising, 36–58 ns falling) compared to the filtered ADUM4120BRIZ-RL (44–68 ns rising, 55–79 ns falling). Both share identical Grade B UVLO (7.3 V), 2.3 A output, and SOIC-6W package. Use ADUM4120-1BRIZ-RL where timing precision outweighs noise immunity on VIN.

Does ADUM4120-1BRIZ-RL support 3.3 V logic input?

Yes, ADUM4120-1BRIZ-RL supports 3.3 V logic input: its VIH threshold is 0.7 × VDD1, so with VDD1 = 3.3 V, VIH = 2.31 V - well within standard 3.3 V CMOS high-level range. The device draws only 3.6–5 mA IDD1 at VDD1 = 3.3 V, making it suitable for low-power controller interfaces.

What is the minimum VDD2 required for reliable operation of ADUM4120-1BRIZ-RL?

The minimum VDD2 for reliable operation is 4.5 V, per the datasheet's Recommended Operating Conditions. Below this, the Grade B UVLO (7.3 V rising threshold) will hold VOUT low. For 12 V gate drive applications, VDD2 = 12–15 V is typical; the driver maintains 2.3 A peak output down to VDD2 = 4.5 V, though RDSON increases slightly below 10 V.

Can ADUM4120-1BRIZ-RL drive SiC MOSFETs directly without external components?

Yes, ADUM4120-1BRIZ-RL can directly drive most discrete SiC MOSFETs: its 2.3 A peak output, 1.6 Ω typical RDSON_N, and 11–26 ns rise/fall times (CL = 2 nF) meet gate charge requirements for devices with Qg ≤ 15 nC. A 5 Ω series gate resistor is recommended to damp ringing and ensure stable switching.

What safety certifications apply to ADUM4120-1BRIZ-RL?

ADUM4120-1BRIZ-RL carries UL 1577 recognition (5 kV rms, 1 min), CSA Component Acceptance Notice 5A, and VDE V 0884-10 certification (VIORM = 849 V peak, reinforced insulation). It meets IEC 60601-1 (2 MOPP) and IEC 61010-1 requirements, supporting medical and industrial safety compliance without additional system-level isolation components.