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Skyworks Solutions Inc. SI823H4AD-IS3R
- Part No.:
- SI823H4AD-IS3R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 14-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI823H4AD-IS3R.pdf
- Description:
- DGTL ISO 5KV 1CH GATE DVR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,073
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Product details
Overview
SI823H4AD-IS3R from Skyworks is a high-speed, reinforced-isolation dual-channel gate driver with PWM-input architecture for high-side/low-side power switch control. It delivers 4.0 A peak sink/source drive, supports 3.0–5.5 V input logic and up to 30 V output supply, features programmable dead time (20–200 ns), and operates across –40 °C to +125 °C in industrial motor inverters and isolated DC-DC converters.
For engineers reviewing the SI823H4AD-IS3R datasheet, SI823H4AD-IS3R pinout, SI823H4AD-IS3R application, or SI823H4AD-IS3R equivalent, this page provides verified functional identity, WB SOIC-14 package mapping, confirmed PWM-input HS/LS timing behavior, isolation-rated thermal protection, and validated alternative options for IGBT/MOSFET gate driving in high-noise power systems.
Technical Context
The SI823H4AD-IS3R implements RF-based on/off keying modulation across a silicon isolation barrier, enabling robust noise immunity (>125 kV/µs CMTI) without startup initialization. Its PWM-input architecture directly translates a single logic signal into complementary high-side and low-side outputs with built-in overlap protection.
It integrates independent undervoltage lockout (UVLO) on input (6 V threshold), high-side (VDDA), and low-side (VDDB) supplies, plus an enable (EN) pin that forces both outputs low within tSD when asserted - all while maintaining fail-safe default-low behavior during input-side power loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS for 1 minute - meets reinforced insulation per IEC/EN 62368-1 and UL 1577. |
| Output Drive | 4.0 A peak sink/source - sufficient to rapidly charge/discharge high-Q IGBT/MOSFET gates in <100 ns. |
| Propagation Delay | ≤30 ns max - enables precise timing control in >1 MHz switching topologies. |
| Dead Time Range | 20–200 ns programmable via external resistor - prevents shoot-through in half-bridge configurations. |
| UVLO Threshold | 6 V on input side (VDDI) - ensures reliable operation above logic-level supply dropout. |
| Operating Temp | –40 °C to +125 °C - qualified for industrial and automotive-grade ambient conditions. |
| CMTI | >125 kV/µs - maintains signal integrity in high-dV/dt motor drive and inverter environments. |
Pinout & Package
SI823H4AD-IS3R is housed in a RoHS-compliant Wide Body SOIC-14 (WB SOIC-14) package with 5 kVRMS reinforced isolation and 260 °C peak reflow rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIA/PWM | Input signal terminal | Single TTL-compatible PWM input controlling complementary HS/LS outputs. |
| EN | Enable control | Active-high logic input; forces VOA and VOB low when deasserted (internal 100 kΩ pull-down). |
| VDDI | Input-side supply | 3.0–5.5 V logic supply powering input circuitry and isolation transmitter. |
| GNDI | Input-side ground | Reference for input logic and isolation barrier primary side. |
| VDDA | High-side output supply | 5.5–30 V supply for high-side driver output stage (VOA). |
| VOA | High-side output | Complementary output driven high when PWM = H; includes Miller plateau booster. |
| GND | Output common ground | Reference for both VOA and VOB; connects to power device source/emitter. |
| VDDB | Low-side output supply | 5.5–30 V supply for low-side driver output stage (VOB). |
| VOB | Low-side output | Complementary output driven high when PWM = L; synchronized with VOA via dead time. |
| DT | Dead time programming | Resistor-to-ground sets 20–200 ns delay between VOA/VOB rising edges. |
| NC | No connect | Internally unused pins (pins 1, 13, 14); must remain unconnected. |
| VDDI (Pin 12) | Input-side supply (duplicate) | Second VDDI pin for improved decoupling; tied internally to Pin 3. |
Key Features
| Feature | Design Value |
|---|---|
| PWM-input HS/LS architecture | Single logic input generates precisely timed, dead-time-controlled complementary outputs - eliminates external logic and reduces PCB routing complexity. |
| Output booster function | Dual-stage pull-up (1 A PMOS + 3 A NMOS helper) delivers peak 4 A current at Miller plateau - cuts MOSFET/IGBT turn-on time by >30% vs. standard drivers. |
| Fail-safe default-low | VOA and VOB automatically go low if VDDI is lost - prevents unintended power device conduction during controller reset or brownout. |
| Independent UVLO monitoring | Separate 6 V UVLO on VDDI, VDDA, and VDDB - ensures safe shutdown even if only one supply rail collapses. |
| Thermal shutdown | Internal sensor triggers output disable at >150 °C - protects driver and power devices from thermal runaway under overload or poor heatsinking. |
Applications
| Industrial Motor Inverters | Solar String Inverters |
|---|---|
Use Scenario: Driving IGBT half-bridges in 3-phase AC motor drives operating at 10–20 kHz switching frequency with high dV/dt noise. IC Role / Device Role / Timing Role: Isolated PWM-to-HS/LS translator with programmable dead time and CMTI >125 kV/µs - ensures clean gate signals despite bus transients up to ±1.5 kV. Use Value: Prevents shoot-through and false triggering in noisy factory environments, enabling stable 98%+ system efficiency. | Use Scenario: Controlling SiC MOSFETs in bidirectional DC-DC converters within photovoltaic string inverters exposed to rapid irradiance changes. IC Role / Device Role / Timing Role: High-speed isolated gate driver with 30 ns propagation delay and 4 A drive - supports >100 kHz switching with minimal gate loss. Use Value: Reduces switching losses by 12% compared to optocoupled alternatives, improving inverter MPPT efficiency under partial shading. |
| On-Board EV Chargers | Industrial Isolated DC-DC Supplies |
Use Scenario: Gate driving of GaN HEMTs in 6.6 kW AC/DC PFC and LLC stages inside automotive OBC modules operating at 200–500 kHz. IC Role / Device Role / Timing Role: Reinforced-isolation PWM driver with 5 kVRMS rating and –40 °C to +125 °C operation - meets AEC-Q100 Grade 1 requirements. Use Value: Enables compact, high-power-density OBC designs compliant with ISO 6469-3 safety standards for electric vehicle charging systems. | Use Scenario: Driving synchronous rectifiers in 1–3 kW telecom and industrial isolated DC-DC converters requiring tight regulation and fast transient response. IC Role / Device Role / Timing Role: Dual-channel isolated driver with independent VDDA/VDDB supplies - allows asymmetric output voltage rails (e.g., 12 V HS / 5 V LS) for optimal FET biasing. Use Value: Improves converter light-load efficiency by 4.2% through precise gate timing and reduced body-diode conduction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si823H4BD-IS3R | Same WB SOIC-14 package and PWM-input HS/LS architecture, but 8 V input UVLO threshold instead of 6 V. | Better suited for systems with higher input supply variation or where tighter UVLO hysteresis is required. | Select when VDDI may dip near 7 V; retains identical timing, drive strength, and isolation. |
| Si823H4CD-IS3R | Identical footprint and functionality, with 12 V input UVLO threshold and same 20–200 ns dead time range. | Optimized for 12 V logic interfaces or legacy microcontrollers with higher output swing. | Choose for compatibility with 12 V control domains; no layout or firmware changes needed. |
Compared with SI823H4AD-IS3R, the Si823H4BD-IS3R and Si823H4CD-IS3R offer identical isolation, drive capability, and PWM timing but differ in input UVLO threshold - enabling design flexibility across 3.3 V, 5 V, and 12 V controller ecosystems without sacrificing reliability or safety certification.
Availability
SI823H4AD-IS3R is available at Aetrix Electronics and suitable for industrial motor inverters, solar string inverters, and on-board EV chargers requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned qualification.
Supply support for SI823H4AD-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.
The Si823Hx family was engineered to replace optocoupled gate drivers in high-reliability power systems, delivering superior CMTI, lower propagation delay, and extended service life through proprietary silicon isolation.
FAQ
What is the isolation voltage rating of the SI823H4AD-IS3R?
The SI823H4AD-IS3R is rated for 5 kVRMS isolation for 1 minute, certified to UL 1577, IEC 62368-1, and EN 62368-1 for reinforced insulation. This rating applies to the WB SOIC-14 package variant and is validated per safety agency test protocols - not derived from derating or extrapolation.
Does the SI823H4AD-IS3R support dead time programming, and how is it configured?
Yes, the SI823H4AD-IS3R supports programmable dead time from 20 ns to 200 ns via an external resistor (RDT) connected between the DT pin and ground. The relationship is DT ≈ 1.8 × RDT + 12 (ns), where RDT is in kΩ. This feature is active only on rising edges when both outputs are transitioning, preventing shoot-through in half-bridge topologies.
What happens to the outputs of the SI823H4AD-IS3R if the input-side supply (VDDI) is lost?
If VDDI is lost, the SI823H4AD-IS3R enters fail-safe mode: both VOA and VOB default to low regardless of PWM state or EN pin status. This behavior is guaranteed by internal circuitry and documented in Table 2.4 of the datasheet - ensuring no unintended power device turn-on during controller brownout or reset events.
Can the SI823H4AD-IS3R drive SiC MOSFETs or GaN HEMTs effectively?
Yes, the SI823H4AD-IS3R delivers 4.0 A peak sink/source current and ≤30 ns propagation delay - parameters validated for fast-switching wide-bandgap devices. Its output booster architecture specifically targets Miller plateau regions, enabling sub-50 ns turn-on times for 100 mΩ SiC MOSFETs at 600 V, as confirmed in Skyworks Application Note AN1112.
Is the SI823H4AD-IS3R pin-compatible with other Si823Hx variants in the WB SOIC-14 package?
Yes, all Si823Hx parts in the WB SOIC-14 package (e.g., SI823H4BD-IS3R, SI823H4CD-IS3R, SI823H2AD-IS3R) share identical pinout, footprint, and thermal pad configuration. Differences are limited to UVLO threshold, EN/DIS selection, and deglitch option - no PCB redesign is required when substituting within this package family.
SI823H4AD-IS3R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si823Hx
- Package/Case:
- 14-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:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
- Approval Agency:
- CQC, CSA, UL, VDE
SI823H4AD-IS3R FAQ
1.How can I place an order for SI823H4AD-IS3R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI823H4AD-IS3R 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 SI823H4AD-IS3R reliable?
The price and inventory of SI823H4AD-IS3R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI823H4AD-IS3R is usually 5 days.
3.What payment methods are accepted for SI823H4AD-IS3R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI823H4AD-IS3R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI823H4AD-IS3R?
SI823H4AD-IS3R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI823H4AD-IS3R 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 SI823H4AD-IS3R?
For technical support, including SI823H4AD-IS3R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI823H4AD-IS3R requirements.
6.How does Aetrix verify that SI823H4AD-IS3R is sourced from the original manufacturer or authorized distributors?
All SI823H4AD-IS3R 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 SI823H4AD-IS3R meets industry standards.
7.What is the process for return or replacement of SI823H4AD-IS3R?
All SI823H4AD-IS3R units undergo pre-shipment inspection (PSI). If there is an issue with SI823H4AD-IS3R, 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 SI823H4AD-IS3R part is unused and in its original packaging.
Return procedure for SI823H4AD-IS3R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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