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Skyworks Solutions Inc. SI823H9TD-IS4R
- Part No.:
- SI823H9TD-IS4R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 8-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI823H9TD-IS4R.pdf
- Description:
- DGTL ISO 5KV 1CH GATE DVR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,710
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Product details
Overview
SI823H9TD-IS4R from Skyworks is a single-channel, isolated gate driver with disable (DIS) control, 12 V output UVLO, and 5 kVRMS reinforced isolation in an SSO-8 package. It delivers 4.0 A peak sink/source drive current, supports 3.0–5.5 V input VDD, and operates up to 30 V output supply voltage. Designed for driving IGBTs and power MOSFETs in high-reliability industrial motor control and isolated DC-DC power supplies.
For engineers reviewing the SI823H9TD-IS4R datasheet, SI823H9TD-IS4R pinout, SI823H9TD-IS4R application, or SI823H9TD-IS4R equivalent, key selection criteria include its DIS-enabled fail-safe behavior, 30 ns max propagation delay, 125 kV/µs CMTI, -40°C to +125°C operation, and SSO-8 package with 5 kVRMS isolation rating.
Technical Context
The SI823H9TD-IS4R implements RF-based on/off keying across a silicon isolation barrier-replacing optocoupler architecture with higher noise immunity and no LED aging. Its output stage integrates a PMOS/NMOS booster topology that delivers enhanced pull-up current during the Miller plateau region to accelerate power switch turn-on.
This variant uses a DIS (disable) input to force the output low regardless of input state, with built-in undervoltage lockout (UVLO) at 12 V on the output side and fail-safe default-low behavior when input-side VDDI is unpowered. It does not support programmable dead time or deglitch features, per its ordering guide entry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS for 1 minute - meets IEC 62368-1 reinforced insulation requirements for safety-critical power systems. |
| Peak Output Current | ±4.0 A - sufficient to rapidly charge/discharge high-Qg IGBTs and SiC MOSFETs in hard-switched topologies. |
| Propagation Delay | ≤30 ns - enables precise timing control in high-frequency (>100 kHz) switching applications like solar inverters. |
| CMTI | >125 kV/µs - ensures robust operation in noisy motor drive environments with fast dv/dt transients. |
| Output UVLO Threshold | 12 V - prevents unreliable gate drive during brown-out conditions on the output-side power rail. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial ambient conditions without derating. |
| Input Supply Range | 3.0–5.5 V - compatible with standard logic-level microcontrollers and FPGA I/O without level-shifting. |
Pinout & Package
SI823H9TD-IS4R is housed in an 8-pin Wide Body Stretched SOIC (SSO-8) package with creepage/clearance optimized for 5 kVRMS reinforced isolation. Pin assignments are defined per Skyworks' official pinout documentation for SSO-8 variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDI | Input-Side Power Supply | 3.0–5.5 V logic-side supply; powers internal RF transmitter and input logic; UVLO monitoring active here. |
| GNDI | Input-Side Ground | Reference for VI and DIS inputs; must be isolated from output ground plane. |
| VI | Logic Input | TTL-compatible high-true signal; drives output when DIS = low and VDDI is valid. |
| DIS | Disable Control | Active-high input; forces VO low unconditionally when asserted; internal 100 kΩ pull-down. |
| VDD | Output-Side Power Supply | 5.5–30 V gate drive supply; UVLO threshold = 12 V; powers output driver stage and booster circuit. |
| GND | Output-Side Ground | Reference for VO; connects to power device source/emitter; galvanically isolated from GNDI. |
| VO | Driver Output | Single-ended, push-pull output capable of ±4.0 A; defaults low on loss of VDDI or DIS assertion. |
| NC | No Connect | Internally unused pin; must remain floating or grounded per layout guidelines to maintain isolation integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Fail-Safe Output Default | VO forced low when VDDI is unpowered - eliminates shoot-through risk in half-bridge configurations during controller reset. |
| Silicon RF Isolation | No LED degradation or CTR drift; stable timing and CMTI over temperature and lifetime vs. optocouplers. |
| Miller Plateau Booster | NMOS helper transistor augments PMOS pull-up during Miller region - reduces IGBT/MOSFET turn-on time by up to 35%. |
| Reinforced Insulation | 5 kVRMS isolation validated to UL 1577, VDE EN 62368-1, and CQC GB4943.1 - suitable for primary-secondary barrier in AC-DC and EV chargers. |
| High-Temperature Operation | Rated for continuous operation at +125°C ambient - supports compact thermal design in enclosed power modules. |
Applications
| Industrial Motor Drive | Solar Inverter Half-Bridge |
|---|---|
Use Scenario: Driving high-side IGBTs in 3-phase VFDs with fast PWM switching and high dv/dt noise. IC Role / Device Role / Timing Role: Isolated gate driver providing 4 A peak current and 30 ns propagation delay to ensure precise, jitter-free switching timing. Use Value: Prevents cross-conduction via DIS-controlled shutdown during fault events and maintains timing accuracy across -40°C to +125°C. | Use Scenario: Controlling leg pairs in string inverters where high common-mode transients occur during MPPT transitions. IC Role / Device Role / Timing Role: Single-channel isolated driver delivering 12 V UVLO-protected gate drive to SiC MOSFETs with >125 kV/µs CMTI immunity. Use Value: Eliminates false triggering from 10 kV/µs transients on DC-link, enabling reliable operation without external filtering. |
| Isolated DC-DC Controller | On-Board Charger (OBC) Auxiliary Stage |
Use Scenario: Driving synchronous rectifiers or active clamps in isolated flyback or forward converters operating at 200–500 kHz. IC Role / Device Role / Timing Role: Low-propagation-delay isolated driver ensuring tight duty-cycle control and minimizing dead-time losses. Use Value: Enables high-efficiency operation at elevated switching frequencies while maintaining safe isolation between primary and secondary sides. | Use Scenario: Gate-driving auxiliary power switches in bidirectional OBC AC-DC and DC-DC stages requiring functional safety compliance. IC Role / Device Role / Timing Role: Fail-safe isolated driver with DIS input for ASIL-B–compatible shutdown sequencing during ISO 26262 fault handling. Use Value: Supports diagnostic response time < 100 µs and eliminates need for external watchdog circuits in safety-critical auxiliary rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI823H9CD-IS4R | Same SSO-8 package and 5 kVRMS isolation, but uses EN (enable) instead of DIS; UVLO = 12 V; no deglitch or dead time. | EN logic requires active-low enable signal; less suitable for safety-critical immediate-shutdown use cases than DIS. | Select SI823H9CD-IS4R only if system controller provides active-low enable and fail-safe low-default behavior is not required during input power loss. |
| UCC5390SCD | Texas Instruments part in SOIC-8; 5 kVRMS isolation; 4 A drive; but uses single VDD supply (3–18 V), no separate input/output rails. | Lacks independent input/output supply domains - unsuitable for applications requiring 30 V gate drive or strict separation of logic and power grounds. | Choose UCC5390SCD only for cost-sensitive, lower-voltage (<18 V) gate drive where dual-rail isolation is unnecessary. |
Compared with SI823H9CD-IS4R and UCC5390SCD, SI823H9TD-IS4R uniquely combines DIS-driven fail-safe shutdown, 30 V output capability, and dual-rail supply architecture-making it optimal for high-voltage industrial and automotive auxiliary power stages demanding functional safety and robust transient immunity.
Availability
SI823H9TD-IS4R is available at Aetrix Electronics and suitable for industrial motor control, solar inverter half-bridge stages, and on-board charger auxiliary power conversion requiring stable component supply and long-term lifecycle assurance.
Supply support for SI823H9TD-IS4R 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 was designed specifically for high-reliability isolated gate driving in power electronics-replacing aging optocouplers with silicon-isolated drivers offering superior CMTI, timing stability, and lifetime performance in motor drives, EV systems, and renewable energy infrastructure.
FAQ
What is the isolation voltage rating of the SI823H9TD-IS4R?
The SI823H9TD-IS4R has a certified 5 kVRMS isolation rating for 1 minute, compliant with UL 1577, VDE EN 62368-1, and CQC GB4943.1 standards. This reinforced insulation rating applies to the SSO-8 package and is validated across the full operating temperature range of -40°C to +125°C. The SI823H9TD-IS4R is rated for continuous working voltage up to 1500 VDC peak between driver outputs.
Does the SI823H9TD-IS4R support programmable dead time?
No, the SI823H9TD-IS4R does not support programmable dead time. Per Skyworks' Ordering Guide, only HS/LS and PWM-configured variants (e.g., SI823H1xx, SI823H4xx, SI823H8xx) include the DT pin and associated resistor-programmable 20–200 ns dead time feature. The SI823H9TD-IS4R is a single-channel DIS-controlled driver with fixed logic behavior and no dead time circuitry.
What happens to the output of the SI823H9TD-IS4R when input power (VDDI) is lost?
When VDDI is unpowered, the SI823H9TD-IS4R enters fail-safe mode and forces VO low regardless of the state of VI or DIS. This behavior is inherent to the Si823H9T configuration and is confirmed in Table 2.2 of the datasheet. It prevents unintended power device turn-on during controller reset or brown-out, enhancing system safety in motor drives and power supplies.
Can the SI823H9TD-IS4R drive SiC MOSFETs effectively?
Yes, the SI823H9TD-IS4R is well-suited for driving SiC MOSFETs. Its ±4.0 A peak output current, 30 ns propagation delay, >125 kV/µs CMTI, and Miller plateau booster architecture directly address SiC gate drive challenges-including fast switching, high dv/dt noise immunity, and high gate charge requirements. The 30 V max output supply supports standard SiC gate drive voltages (e.g., +20 V / –5 V with external level shift).
Is the SI823H9TD-IS4R automotive-qualified?
The SI823H9TD-IS4R is an industrial-grade part (suffix "-IS4"), but an automotive-grade variant SI823H9TD-AS4 exists and shares identical electrical specifications, package, and pinout. The automotive version undergoes AEC-Q100 qualification, AIAG-compliant PPAP, and IMDS/CAMDS reporting-making it suitable for OBC, traction inverter auxiliary stages, and battery management systems where automotive process controls are mandated.
SI823H9TD-IS4R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Number of Channels:
- 1
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 125kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 30ns, 30ns
- Pulse Width Distortion (Max):
- 5ns
- Rise / Fall Time (Typ):
- 12ns, 12ns (Max)
- Current - Output High, Low:
- 4A, 4A
- Current - Peak Output:
- 6A
- Voltage - Forward (Vf) (Typ):
- -
- Current - DC Forward (If) (Max):
- -
- Voltage - Output Supply:
- 5.5V ~ 30V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
- Approval Agency:
- CQC, CSA, UL, VDE
SI823H9TD-IS4R FAQ
1.How can I place an order for SI823H9TD-IS4R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI823H9TD-IS4R on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SI823H9TD-IS4R reliable?
The price and inventory of SI823H9TD-IS4R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI823H9TD-IS4R is usually 5 days.
3.What payment methods are accepted for SI823H9TD-IS4R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI823H9TD-IS4R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI823H9TD-IS4R?
SI823H9TD-IS4R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI823H9TD-IS4R order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SI823H9TD-IS4R?
For technical support, including SI823H9TD-IS4R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI823H9TD-IS4R requirements.
6.How does Aetrix verify that SI823H9TD-IS4R is sourced from the original manufacturer or authorized distributors?
All SI823H9TD-IS4R products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SI823H9TD-IS4R meets industry standards.
7.What is the process for return or replacement of SI823H9TD-IS4R?
All SI823H9TD-IS4R units undergo pre-shipment inspection (PSI). If there is an issue with SI823H9TD-IS4R, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SI823H9TD-IS4R part is unused and in its original packaging.
Return procedure for SI823H9TD-IS4R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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