Skyworks Solutions Inc. SI823H9CC-ASR

Overview

SI823H9CC-ASR from Skyworks is a single-channel, automotive-grade isolated gate driver with 4.0 A sink/source peak output drive capability, 12 V UVLO threshold, and EN pin control. It features silicon-based isolation (3.75 kVRMS), 30 ns max propagation delay, and operates across –40 °C to +125 °C for driving IGBTs/MOSFETs in high-reliability traction inverters and on-board chargers.

For engineers reviewing the SI823H9CC-ASR datasheet, SI823H9CC-ASR pinout, SI823H9CC-ASR application, or SI823H9CC-ASR equivalent, key selection factors include its fail-safe default-low output during input-side power loss, NB SOIC-8 package with reinforced insulation per IEC 62368-1, and AEC-Q100 qualification for automotive power systems.

Technical Context

The SI823H9CC-ASR implements RF-based on/off keying modulation across a proprietary silicon isolation barrier, enabling robust noise immunity (>125 kV/µs CMTI) without startup initialization. Its single-channel architecture supports TTL-compatible VI input and EN-controlled enable logic, with fail-safe behavior forcing VO+ and VO– low when VDDI is unpowered.

It uses a dual-stage output booster-standard PMOS + NMOS helper-to deliver enhanced pull-up current during the Miller plateau region, achieving fast turn-on times. Undervoltage lockout (UVLO) is independently monitored on input (VDDI) and output (VDD) sides, with 12 V UVLO threshold and hysteresis ensuring stable operation during supply transients.

Key Specifications

Pinout & Package

NB SOIC-8 package: 3.9 mm × 4.9 mm body, 1.27 mm pitch, gull-wing leads, creepage/clearance optimized for reinforced insulation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SI823H9AC-ASR and SI823H9BC-ASR, the SI823H9CC-ASR provides higher UVLO hysteresis margin for 12 V gate supplies, reducing false turn-off during VDD ripple in high-power OBC and traction inverter rails.

Availability

SI823H9CC-ASR is available at Aetrix Electronics and suitable for on-board chargers, traction inverters, and battery management systems requiring stable component supply with automotive-grade traceability and long-term lifecycle support.

Supply support for SI823H9CC-ASR 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.

The Si823Hx family is designed specifically for high-reliability isolated gate driving in automotive electrification and industrial power conversion, leveraging silicon-based isolation to replace optocouplers with superior CMTI, timing accuracy, and lifetime stability.

FAQ

What is the isolation voltage rating of the SI823H9CC-ASR?

The SI823H9CC-ASR has a certified isolation rating of 3.75 kVRMS for 1 minute, meeting reinforced insulation requirements per IEC 62368-1, UL 1577, and VDE standards. This rating applies to the NB SOIC-8 package and is validated across the full operating temperature range of –40 °C to +125 °C. The SI823H9CC-ASR achieves this using Skyworks' proprietary silicon isolation technology, not optocoupler-based methods.

Does the SI823H9CC-ASR support fail-safe operation during input power loss?

Yes, the SI823H9CC-ASR features inherent fail-safe behavior: when VDDI (input-side supply) is unpowered or drops below UVLO, both VO+ and VO– outputs default to low state regardless of VI or EN pin states. This prevents unintended turn-on of power devices during MCU reset, brownout, or communication interruption - a critical safety feature confirmed in Table 2.1 of the Si823Hx datasheet for the H9 variant.

What is the purpose of the EN pin on the SI823H9CC-ASR?

The EN (Enable) pin on the SI823H9CC-ASR is an active-low control that unconditionally forces VO+ and VO– low within tSD (shutdown time) when pulled low, overriding VI input state. It has an internal 100 kΩ pull-down resistor and remains inactive if VDDI is below UVLO. This allows system-level fault handling - for example, disabling all gate drives during overtemperature or overcurrent events detected by the host controller.

Can the SI823H9CC-ASR drive SiC MOSFETs effectively?

Yes, the SI823H9CC-ASR is capable of driving SiC MOSFETs due to its 4.0 A peak sink/source output current, 30 ns propagation delay, and >125 kV/µs common-mode transient immunity. Its output booster architecture delivers enhanced pull-up current during the Miller plateau, reducing turn-on time - a key requirement for fast-switching SiC devices. The 5.5–30 V VDD range supports standard 12–20 V SiC gate bias schemes.

Is the SI823H9CC-ASR qualified for automotive applications?

Yes, the SI823H9CC-ASR is an automotive-grade part (denoted by "-A" suffix and "-ASR" tape-and-reel packaging), fully qualified to AEC-Q100 Grade 1 (–40 °C to +125 °C). It is manufactured using automotive-specific process flows, supported by AIAG-compliant PPAP documentation, IMDS/CAMDS material declarations, and zero-defect methodology throughout design and production - explicitly confirmed in Section 1. Ordering Guide of the Si823Hx datasheet.