Skyworks Solutions Inc. SI82393CD-ISR

Overview

SI82393CD-ISR from Skyworks Solutions is a high-side/low-side isolated gate driver IC with dual 4.0 A peak output capability, 2.5 V–5.5 V input supply (VDDI), enhanced UVLO detection (12 V threshold), and integrated deglitch filtering. It operates with up to 24 V driver supply voltage and supports safe startup with 1 ms delayed initialization. It is used in traction inverters and on-board chargers for battery electric vehicles.

For engineers reviewing the SI82393CD-ISR datasheet, SI82393CD-ISR pinout, SI82393CD-ISR application, or SI82393CD-ISR equivalent, key selection criteria include its reinforced isolation rating (5 kVRMS), programmable dead time absence (fixed logic), deglitch-enabled noise immunity, fail-safe low-default outputs during VDDI power-down, and SOIC-16 wide-body package compatibility with automotive-grade thermal and reliability requirements.

Technical Context

The SI82393CD-ISR implements RF-based silicon isolation with two independent input channels (VIA, VIB) driving high-side and low-side outputs (VOA, VOB) across a reinforced barrier. Its control logic enforces complementary operation with automatic UVLO fault feedback: if either VDDA or VDDB falls below 12 V, both outputs are actively driven low via isolation-coupled status signaling.

This device uses a proprietary RF on/off keying modulation scheme-not pulse coding-delivering 100 kV/µs CMTI, 30 ns propagation delay, and immunity to magnetic field interference. It lacks programmable dead time but includes deglitch filtering to suppress transient noise on input signals.

Key Specifications

Pinout & Package

SI82393CD-ISR is housed in a RoHS-compliant SOIC-16 wide-body package (7.5 mm body width, 10.3 mm length) with creepage/clearance optimized for reinforced insulation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side/low-side isolated gate driver applications.

Compared with Si82393AD-ISR and Si82393BD-ISR, the SI82393CD-ISR provides highest UVLO threshold (12 V), making it optimal for 800 V battery systems where driver supplies operate near 24 V - reducing false trips while maintaining fail-safe shutdown during severe rail droop.

Availability

SI82393CD-ISR is available at Aetrix Electronics and suitable for battery electric vehicle traction inverters, on-board chargers, and solar microinverters requiring stable component supply with automotive-grade lifecycle assurance.

Supply support for SI82393CD-ISR 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 U.S.-based semiconductor company specializing in analog and mixed-signal connectivity solutions, with leadership in RF, timing, and isolation technologies.

The Si8239x family was designed specifically for high-reliability isolated gate driving in automotive and industrial power conversion, emphasizing safety features (UVLO feedback, fail-safe defaults), noise immunity (100 kV/µs CMTI), and AEC-Q100 compliance.

FAQ

What is the UVLO threshold for SI82393CD-ISR, and how does it affect system safety?

The SI82393CD-ISR has a 12 V enhanced UVLO threshold on both VDDA and VDDB. When either rail drops below this level, the device feeds back the fault across the isolation barrier and actively drives both VOA and VOB low - preventing shoot-through in half-bridge configurations. This behavior is confirmed in Table 2.1 of the datasheet and is a core safety feature distinguishing SI82393CD-ISR from non-enhanced variants. The 12 V setting aligns with 24 V driver supplies commonly used in 800 V BEV inverters.

Does SI82393CD-ISR support programmable dead time?

No, SI82393CD-ISR does not support programmable dead time. As shown in Table 1.1 of the datasheet, its "Dead-Time Setting" field is marked "N/A". Dead time must be implemented externally using controller logic or gate-resistor tuning. This distinguishes it from Si82394x/Si82398x PWM-input variants which offer 10–200 ns or 40–600 ns programmable dead time. SI82393CD-ISR relies on complementary input control (VIA/VIB) with fixed internal timing.

What package type is used for SI82393CD-ISR, and is it RoHS-compliant?

SI82393CD-ISR uses a SOIC-16 wide-body package (7.5 mm body width), as specified in Table 1.1 and Section 9 of the datasheet. It is RoHS-compliant and rated for peak reflow temperatures of 260 °C per JEDEC J-STD-020. The wide-body variant provides enhanced creepage distance required for reinforced insulation in 1000 V DC systems - critical for automotive and solar applications.

How does the deglitch feature function in SI82393CD-ISR?

The deglitch feature in SI82393CD-ISR filters short-duration noise spikes (<50 ns) on VIA and VIB inputs, preventing false triggering caused by EFT or switching transients. This is enabled by default and requires no external components. Table 1.1 confirms "Yes" under "Deglitch" for SI82393CD-ISR. Unlike RC filters, this internal deglitch circuit maintains full-speed signal integrity while rejecting sub-50 ns glitches - essential for reliable operation in noisy motor drive environments.

Is SI82393CD-ISR qualified for automotive applications?

Yes, SI82393CD-ISR is AEC-Q100 qualified and designated as an automotive-grade part (suffix "-AS" in corresponding OPN SI82393CD-AS). It undergoes full automotive process flows, statistical process control, AIAG-compliant PPAP documentation, and IMDS/CAMDS material reporting. Its –40 °C to +125 °C operating range, 5 kVRMS isolation, and enhanced UVLO make it suitable for traction inverters, on-board chargers, and battery management systems in BEVs and HEVs.