Skyworks Solutions Inc. SI82F89ABE-IS3R

Overview

SI82F89ABE-IS3R from Skyworks Solutions is a dual-channel isolated gate driver with High-Side/Low-Side configuration, Disable (DIS) control input, and Selectable Variable Current Drive (SelVCD™). It delivers 8-level programmable sourcing/sinking current up to 4 A peak, supports 3–20 V logic supply and 5–30 V gate drive supply, and provides 6 kVRMS reinforced isolation for driving SiC/GaN FETs in half-bridge motor inverters.

For engineers reviewing the SI82F89ABE-IS3R datasheet, SI82F89ABE-IS3R pinout, SI82F89ABE-IS3R application, or SI82F89ABE-IS3R equivalent, key selection criteria include channel-to-channel skew (<5 ns), integrated Miller clamp operation, dead time programmability via external resistor, UVLO options (4/8/12/15 V), and AEC-Q100 qualification for automotive powertrain systems.

Technical Context

The SI82F89ABE-IS3R implements capacitive digital isolation using dual silicon dioxide (SiO₂) capacitors with RF OOK modulation, enabling high CMTI (>200 kV/μs) and low propagation delay variation across temperature and lifetime. Its functional architecture separates logic input (VDDI/GNDI) from two independent gate driver domains (VDDA/GNDA and VDDB/GNDB), each with dedicated UVLO monitoring and Miller clamping.

This device operates as a High-Side/Low-Side driver for half-bridge topologies: PWM input controls complementary outputs (VOA high / VOB low or vice versa), while DT pin sets dead time via resistor (10–110 kΩ), and SPD+/SPD− pins configure sourcing/sinking current independently across eight levels without external gate resistors.

Key Specifications

Pinout & Package

Narrow-body 16-pin SOIC package (IS3R) with 7.5 mm minimum creepage distance and reinforced insulation barrier between logic and power sides.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si82F89BBE-IS3R and UCC5390SCDR, SI82F89ABE-IS3R uniquely combines DIS-based fail-safe shutdown, eight-level SelVCD™ tuning, and monolithic Miller clamping - enabling compact, high-reliability half-bridge designs for automotive and industrial inverters without external passive components.

Availability

SI82F89ABE-IS3R is available at Aetrix Electronics and suitable for motor drives, onboard chargers, and uninterruptible power supplies requiring stable component supply, AEC-Q100 compliance, and reinforced isolation certification.

Supply support for SI82F89ABE-IS3R 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

Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions, with leadership in RF, timing, and isolation technologies for wireless, automotive, and industrial markets.

The Si82Fx family was designed specifically for high-reliability isolated gate driving in next-generation power electronics - targeting SiC/GaN-based motor inverters, EV chargers, and renewable energy systems demanding low skew, high CMTI, and programmable drive strength.

FAQ

What is the function of the DIS pin on the SI82F89ABE-IS3R?

The DIS (Disable) pin on the SI82F89ABE-IS3R is an active-high control input that unconditionally forces both VOA and VOB outputs low, overriding all other logic inputs including PWM. This provides hardware-level fault containment during overcurrent or thermal events. When DIS is asserted (logic high), SI82F89ABE-IS3R enters immediate shutdown mode with guaranteed low-state outputs, making it critical for functional safety architectures in automotive and industrial inverters.

Does the SI82F89ABE-IS3R support dynamic adjustment of gate drive current during operation?

Yes, the SI82F89ABE-IS3R supports dynamic speed control via its SPD+ and SPD− pins. Instead of fixed resistors, a voltage source can be applied to these pins to change sourcing/sinking current levels in real time, with a Speed Update Delay (tSUD) of typically 100 ns. This capability allows SI82F89ABE-IS3R to adapt drive strength during soft-start, fault recovery, or ZVS optimization - eliminating need for multiple discrete gate resistors or external DACs.

How does the Miller clamp operate in the SI82F89ABE-IS3R?

The Miller clamp in the SI82F89ABE-IS3R engages automatically when VOA or VOB falls below the VMCTA/B threshold during turn-off, temporarily switching sinking current to the highest SelVCD™ level (SPD7−) to rapidly discharge the Miller capacitance. It remains active until the next rising edge, preventing dv/dt-induced false turn-on. SI82F89ABE-IS3R requires direct connection to the switch gate - no series gate resistors - to maintain full clamp effectiveness and avoid voltage drop that would degrade performance.

What isolation certifications apply to the SI82F89ABE-IS3R?

The SI82F89ABE-IS3R is certified for 6 kVRMS reinforced isolation per UL 1577 (1-minute test), VDE 60747-17, CSA 62368-1, and CQC GB4943.1. It also meets 1500 VRMS working voltage and 10 kV bipolar surge requirements. These certifications validate its use in safety-critical applications such as automotive traction inverters and medical-grade power supplies where galvanic separation between control and power domains is mandated.

Can the SI82F89ABE-IS3R be used in universal (dual independent) mode instead of High-Side/Low-Side mode?

No - the SI82F89ABE-IS3R is factory-configured exclusively for High-Side/Low-Side operation with PWM input. Unlike universal variants (e.g., Si82F39x), it lacks VIA/VIB dual-input capability and cannot be reconfigured via pin strapping. Its DT pin is intended only for dead time insertion in half-bridge topologies; connecting DT to VDDI disables overlap protection but does not convert SI82F89ABE-IS3R into a dual independent driver.