Skyworks Solutions Inc. SI8232AC-D-IS1

Overview

SI8232AC-D-IS1 from Skyworks Solutions is a dual-channel isolated gate driver IC with independent 0.5 A peak output per channel, 3.75 kVRMS input-to-output isolation, and TTL-compatible dual-input (VIA/VIB) logic interface. It operates across –40°C to +125°C with 5 V UVLO threshold and supports up to 8 MHz switching in motor control and solar inverter half-bridge topologies.

For engineers reviewing the SI8232AC-D-IS1 datasheet, SI8232AC-D-IS1 pinout, SI8232AC-D-IS1 application, or SI8232AC-D-IS1 equivalent, this page delivers verified specifications, SOIC-16 narrow-body package details, dual-driver functional context, safety-certified isolation performance, and direct alternative part comparisons for gate drive design validation.

Technical Context

The SI8232AC-D-IS1 implements two fully isolated RF-modulated channels using silicon-based isolation barriers-no optocoupler aging or LED degradation. Each channel features independent undervoltage lockout (UVLO) monitoring on VDDI, VDDA, and VDDB rails, with outputs defaulting low during UVLO conditions.

Unlike high-side/low-side variants (e.g., SI8230), the SI8232AC-D-IS1 lacks programmable dead time and overlap protection; its dual-driver architecture enables synchronous or independent control of two MOSFETs/IGBTs with immediate output transitions and no internal delay between VIA/VIB inputs and VOA/VOB outputs.

Key Specifications

Pinout & Package

SI8232AC-D-IS1 uses a 16-pin SOIC narrow-body package (5.3 mm width) with 8.5 mm creepage distance and reinforced insulation structure optimized for 3.75 kVRMS isolation. Pin assignments are validated per Skyworks Si823x datasheet Figure 3 and Table 5.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SI8232AC-D-IS1, SI8232AD-D-IS offers higher isolation for medical/industrial safety compliance but requires wider PCB layout; SI8232BB-D-IS1 reduces isolation margin to cut cost in low-voltage applications, retaining full functional compatibility and pinout.

Availability

SI8232AC-D-IS1 is available at Aetrix Electronics and suitable for motor control systems, solar inverters, industrial power supplies, and plasma display drivers requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for SI8232AC-D-IS1 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, isolation, and precision timing technologies.

The Si823x family was designed specifically for robust, high-speed isolated gate driving in power conversion systems-replacing optocouplers with RF-based silicon isolation to deliver faster timing, longer lifetime, and higher integration.

FAQ

What is the maximum switching frequency supported by the SI8232AC-D-IS1?

The SI8232AC-D-IS1 supports up to 8 MHz switching frequency, enabled by its 15–30 ns propagation delay and <10 ns channel-to-channel skew. This allows clean PWM operation at 20 kHz with <0.5% timing uncertainty, making SI8232AC-D-IS1 suitable for high-efficiency resonant converters and digital PFC stages where precise edge alignment is critical.

Does the SI8232AC-D-IS1 include built-in dead time or overlap protection?

No, the SI8232AC-D-IS1 does not include programmable dead time or overlap protection logic. As a dual-driver variant (not high-side/low-side), it passes VIA and VIB states directly to VOA and VOB with immediate transitions. This makes SI8232AC-D-IS1 ideal for independent switch control or synchronous dual-gate applications where external timing control is preferred.

What are the UVLO thresholds for the SI8232AC-D-IS1 input and output supplies?

The SI8232AC-D-IS1 has a 5 V rising UVLO threshold on VDDI (input side) and 5 V rising UVLO on both VDDA and VDDB (output-side supplies). All three rails must exceed 5 V before outputs become active; if any supply falls below 5 V, the corresponding output defaults low. This ensures fail-safe behavior during brownout conditions in SI8232AC-D-IS1-based systems.

Can the SI8232AC-D-IS1 drive both N-channel and P-channel MOSFETs?

Yes, the SI8232AC-D-IS1 can drive either N-channel or P-channel MOSFETs. Its outputs (VOA/VOB) are push-pull drivers capable of sourcing up to 0.5 A and sinking up to 0.5 A, with rail-to-rail swing from GNDA/GNDB to VDDA/VDDB. For P-channel high-side use, connect VDDA to source potential and VOA to gate-SI8232AC-D-IS1's output stage supports this configuration without external components.

Is the SI8232AC-D-IS1 pin-compatible with other Si823x family members?

SI8232AC-D-IS1 shares the same SOIC-16 narrow-body pinout with all Si8232-x variants (e.g., SI8232BB-D-IS1, SI8232AD-D-IS), including identical VIA/VIB/VOA/VOB/GNDI/GNDA/GNDB assignments. However, it is not pin-compatible with high-side/low-side variants like SI8230 or SI8233 due to different internal logic and DT pin allocation-always verify pin function mapping before substitution.