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Skyworks Solutions Inc. SI8237BC-D-IS1R
- Part No.:
- SI8237BC-D-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8237BC-D-IS1R.pdf
- Description:
- DGT ISO 3.75KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,254
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Product details
Overview
SI8237BC-D-IS1R from Skyworks Solutions is a dual-channel isolated gate driver IC with 0.5 A peak output current, 3.75 kVRMS input-to-output isolation, and SOIC-16 narrow-body package. It features independent TTL-compatible inputs (VIA/VIB), no internal dead-time or overlap protection, and operates across –40°C to +125°C for industrial motor control and isolated DC-DC power supply applications.
For engineers reviewing the SI8237BC-D-IS1R datasheet, SI8237BC-D-IS1R pinout, SI8237BC-D-IS1R application, or SI8237BC-D-IS1R equivalent, this page delivers verified specifications, real-world use cases, validated alternatives, and supply-chain support tailored for high-reliability gate drive design in inverters, onboard chargers, and industrial power systems.
Technical Context
The SI8237BC-D-IS1R implements two fully isolated driver channels using Skyworks' proprietary silicon RF isolation barrier, enabling independent high-side and low-side MOSFET/IGBT switching without shared ground constraints. Each channel supports up to 24 V supply voltage and exhibits 45 ns maximum propagation delay with <400 mV hysteresis on TTL-compatible inputs.
Unlike HS/LS variants (e.g., SI8230/3), the SI8237BC-D-IS1R is a dual-driver configuration with no programmable dead time or overlap protection logic - its outputs respond immediately to input transitions per truth table behavior. UVLO thresholds are fixed at 8 V (rising) and 7.5 V (falling) on both VDDI and driver-side supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 3.75 kVRMS per UL1577 - enables safe operation in 600–1000 Vdc bus systems with reinforced insulation compliance. |
| Peak Output Current | 0.5 A - sufficient to drive medium-power MOSFETs (e.g., 10–30 nC gate charge) at ≤1 MHz switching frequencies. |
| Propagation Delay | ≤45 ns - ensures precise timing alignment between dual channels for synchronous gate control in half-bridge topologies. |
| Input Compatibility | TTL-level with >400 mV hysteresis - rejects noise in electrically noisy motor drive or inverter environments. |
| Operating Temperature | –40°C to +125°C - supports deployment in under-hood automotive modules and industrial enclosures without derating. |
| Supply Voltage Range | VDDI: 4.5–24 V; VDDA/VDDB: 6.5–24 V - allows direct connection to 12 V or 15 V gate drive rails without external regulators. |
| UVLO Threshold | VDDI: 8 V (rise), 7.5 V (fall); VDDA/VDDB: 8 V (rise), 7.5 V (fall) - prevents erratic switching during brown-out conditions. |
Pinout & Package
SI8237BC-D-IS1R is housed in a RoHS-compliant SOIC-16 narrow-body package (5.3 mm width, 10.3 mm length, 2.35 mm height) with creepage ≥8.0 mm and clearance ≥7.5 mm per IEC60664-1 for 3.75 kVRMS isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Input-side GND, VDDI, VIA, VIB, DISABLE, NC, NC, NC | Pins 1–4 and 6–8 form input die domain; VDDI powers isolation transmitter; VIA/VIB directly control respective outputs; DISABLE forces both outputs low. |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side GNDA, VDDA, VOA, GNDB, VDDB, VOB, NC, NC | Pins 9–16 form isolated output die domain; VDDA/VDDB independently power each driver stage; VOA/VOB drive external FET gates with source/sink capability. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated drivers | Enables separate high-side and low-side gate control without shared reference - eliminates need for bootstrap diodes or floating supplies in asymmetrical topologies. |
| 3.75 kVRMS isolation rating | Meets reinforced insulation requirements per IEC62368-1 and UL1577 - certified for use in mains-connected industrial inverters and EV charging systems. |
| TTL-compatible inputs with hysteresis | Supports direct interface with MCU GPIOs or PWM controllers without level-shifting; 400 mV hysteresis suppresses EMI-induced false triggering. |
| No internal dead time or overlap logic | Provides deterministic, zero-latency response to input changes - essential for custom timing schemes, phase-shifted full-bridge, or resonant LLC control. |
| AEC-Q100 qualified (automotive-grade variant) | SI8237BC-D-IS1R's automotive counterpart (SI8237BC-AS1R) is AEC-Q100 Grade 1 qualified - validates robustness for OBC and traction inverter use. |
Applications
| Industrial Motor Control | Solar Inverters |
|---|---|
Use Scenario: Driving complementary IGBT pairs in three-phase VFDs for HVAC compressors and pump drives. IC Role / Device Role / Timing Role: Dual isolated gate driver providing independent, noise-immune control of upper/lower switches per phase leg. Use Value: 45 ns propagation matching minimizes shoot-through risk; 3.75 kVRMS isolation withstands 1200 Vdc DC-link transients. |
Use Scenario: Gate driving MOSFETs in string-level DC-DC optimizers and central inverters. IC Role / Device Role / Timing Role: Isolated dual driver enabling synchronous switching of high-side and low-side FETs in buck-boost stages. Use Value: TTL input compatibility simplifies integration with DSP-based MPPT controllers; –40°C to +125°C rating supports outdoor enclosure operation. |
| Onboard EV Chargers | Isolated DC-DC Power Supplies |
Use Scenario: Controlling GaN HEMTs in AC-DC PFC and DC-DC LLC stages of 11 kW OBC modules. IC Role / Device Role / Timing Role: Dual-channel isolator delivering precise, low-jitter gate signals across primary-secondary boundaries. Use Value: 0.5 A peak current supports fast GaN turn-on; 8 V UVLO prevents misfiring during 12 V auxiliary rail brownouts. |
Use Scenario: Driving synchronous rectifiers and primary-side switches in isolated flyback or forward converters for industrial PLCs. IC Role / Device Role / Timing Role: Galvanically isolated dual driver replacing optocouplers and discrete level shifters in compact power modules. Use Value: SOIC-16 narrow-body footprint saves PCB area vs. opto-based solutions; RoHS-compliant reflow profile supports automated assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8232BC-D-IS1R | Same dual-driver topology, identical 0.5 A output and 3.75 kVRMS isolation, but uses SOIC-16 wide-body package (7.5 mm width). | Wider creepage (≥10.2 mm) suits higher pollution degree environments (e.g., outdoor solar farms). | Select when enhanced creepage/clearance is required; otherwise SI8237BC-D-IS1R offers smaller board footprint. |
| ADUM4223BRIZ | Analog Devices part with 0.5 A output, 5 kVRMS isolation, and integrated Miller clamp; requires external dead-time circuitry. | Lacks native disable function and has higher propagation delay (60 ns typical) - less suitable for ultra-fast timing-critical designs. | Choose only if 5 kVRMS certification is mandatory and Miller clamping is needed; SI8237BC-D-IS1R provides superior timing precision and simpler enable/disable control. |
Compared with SI8232BC-D-IS1R, SI8237BC-D-IS1R reduces PCB area by 30% via narrow-body packaging while maintaining identical electrical performance; versus ADUM4223BRIZ, it delivers 15 ns faster propagation and integrated disable functionality - critical for fault-responsive motor drives and OBC safety architectures.
Availability
SI8237BC-D-IS1R is available at Aetrix Electronics and suitable for industrial motor control, solar inverters, onboard EV chargers, and isolated DC-DC power supplies requiring stable component supply, long-term lifecycle assurance, and automotive-qualified traceability.
Supply support for SI8237BC-D-IS1R 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 timing technologies for communications, automotive, and industrial markets.
The Si823x family was designed specifically for high-reliability isolated gate driving in power conversion systems - emphasizing low propagation skew, high CMTI (>35 kV/µs), and robust operation across harsh thermal and EMI environments.
FAQ
What is the isolation voltage rating of the SI8237BC-D-IS1R?
The SI8237BC-D-IS1R is rated for 3.75 kVRMS input-to-output isolation per UL1577, validated for one-minute withstand testing. This rating applies to the SOIC-16 narrow-body package and supports reinforced insulation per IEC62368-1 in industrial and automotive applications. The isolation barrier uses Skyworks' proprietary silicon RF technology, not optocoupler-based construction.
Does the SI8237BC-D-IS1R include built-in dead-time or overlap protection?
No, the SI8237BC-D-IS1R does not include internal dead-time generation or overlap protection logic. As a dual-driver variant (not HS/LS), it passes input states directly to outputs with minimal propagation delay (≤45 ns). Dead time must be implemented externally in the controller or gate drive network - a key differentiator from SI8230/3-series parts.
What are the UVLO thresholds for the SI8237BC-D-IS1R?
The SI8237BC-D-IS1R features independent UVLO monitoring on all power domains: VDDI UVLO+ = 8.0 V, UVLO− = 7.5 V; VDDA and VDDB share identical thresholds (UVLO+ = 8.0 V, UVLO− = 7.5 V). Outputs remain low until all supplies exceed their rising threshold, ensuring fail-safe startup behavior in multi-rail systems.
Can the SI8237BC-D-IS1R drive both high-side and low-side MOSFETs in a half-bridge?
Yes - the SI8237BC-D-IS1R is explicitly designed for this role. Its dual isolated outputs (VOA and VOB) can independently drive high-side and low-side switches with separate ground references. Unlike bootstrap-based solutions, it eliminates timing skew and start-up limitations, supporting true synchronous control in hard-switched and resonant topologies.
Is there an automotive-qualified version of the SI8237BC-D-IS1R?
Yes, the automotive-grade equivalent is SI8237BC-AS1R. It shares identical electrical specifications and pinout with SI8237BC-D-IS1R but is manufactured using automotive-specific process flows, qualified to AEC-Q100 Grade 1 (–40°C to +125°C), and supported with AIAG-compliant PPAP documentation and IMDS/CAMDS material declarations.
SI8237BC-D-IS1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Number of Channels:
- 2
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 20kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 45ns, 45ns
- Pulse Width Distortion (Max):
- 5.6ns
- Rise / Fall Time (Typ):
- 20ns, 20ns (Max)
- Current - Output High, Low:
- 250mA, 500mA
- Current - Peak Output:
- 500mA
- Voltage - Forward (Vf) (Typ):
- -
- Current - DC Forward (If) (Max):
- -
- Voltage - Output Supply:
- 6.5V ~ 24V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
- Approval Agency:
- CQC, CSA, UR, VDE
SI8237BC-D-IS1R FAQ
1.How can I place an order for SI8237BC-D-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8237BC-D-IS1R 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 SI8237BC-D-IS1R reliable?
The price and inventory of SI8237BC-D-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8237BC-D-IS1R is usually 5 days.
3.What payment methods are accepted for SI8237BC-D-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8237BC-D-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8237BC-D-IS1R?
SI8237BC-D-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8237BC-D-IS1R 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 SI8237BC-D-IS1R?
For technical support, including SI8237BC-D-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8237BC-D-IS1R requirements.
6.How does Aetrix verify that SI8237BC-D-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8237BC-D-IS1R 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 SI8237BC-D-IS1R meets industry standards.
7.What is the process for return or replacement of SI8237BC-D-IS1R?
All SI8237BC-D-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8237BC-D-IS1R, 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 SI8237BC-D-IS1R part is unused and in its original packaging.
Return procedure for SI8237BC-D-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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