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Skyworks Solutions Inc. SI8237BD-ASR
- Part No.:
- SI8237BD-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8237BD-ASR.pdf
- Description:
- DGT ISO 3.75KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,830
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Product details
Overview
SI8237BD-ASR from Skyworks Solutions is a dual-channel isolated gate driver IC with 5 kVRMS input-to-output isolation, 0.5 A peak output current per channel, TTL-compatible inputs with >400 mV hysteresis, and SOIC-16 wide-body RoHS-compliant packaging. It serves as a robust replacement for optocoupler-based gate drive in half-bridge motor control and isolated DC-DC power supplies.
For engineers reviewing the SI8237BD-ASR datasheet, SI8237BD-ASR pinout, SI8237BD-ASR application, or SI8237BD-ASR equivalent, this product delivers verified dual-channel isolation, automotive-grade AEC-Q100 qualification, 45 ns propagation delay, and UVLO at 8 V - critical for reliable MOSFET/IGBT switching in high-noise industrial and traction inverter environments.
Technical Context
The SI8237BD-ASR implements RF-based on/off keying across a proprietary silicon isolation barrier, enabling fast, noise-immune signal transmission without startup initialization. Its dual independent channels operate with separate input (VDDI) and output (VDDA/VDDB) supplies, supporting grounded or floating output configurations.
Unlike high-side/low-side variants, SI8237BD-ASR lacks programmable dead time or overlap protection - confirmed by Table 2 (Si8232/7 = Dual Driver, "-" in Overlap Protection and Programmable Dead Time columns). Input logic is direct mapping: VIA → VOA, VIB → VOB, with immediate output transitions and no internal delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5.0 kVRMS per UL1577 - enables reinforced insulation in 1500 VDC systems like solar inverters and onboard chargers. |
| Peak Output Current | 0.5 A per channel - sufficient to drive medium-power MOSFETs (e.g., 10–30 nC gate charge) at ≤8 MHz switching frequency. |
| Propagation Delay | 45 ns max - ensures tight timing control in high-frequency PWM applications such as motor phase-leg drivers. |
| UVLO Threshold | 8 V (rising), 7.5 V (falling) - prevents erratic gate drive during brown-out conditions in 12–24 V industrial power rails. |
| Input Compatibility | TTL-level with >400 mV hysteresis - rejects noise spikes up to 400 mV on VIA/VIB lines in EMI-heavy motor drive environments. |
| Operating Temperature | –40 °C to +125 °C - validated for under-hood automotive use including battery management systems and traction inverters. |
| AEC-Q100 Grade | Qualified to Grade 1 - meets automotive reliability requirements for mission-critical power electronics without derating. |
Pinout & Package
SI8237BD-ASR uses a RoHS-compliant SOIC-16 wide-body package (10.3 mm × 7.5 mm, 2.3 mm height) with creepage ≥8.3 mm and clearance ≥8.3 mm per IEC 60664-1, rated for 5 kVRMS isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Input-side ground and supply | GNDI (pins 1, 8), VDDI (pin 2), VIA (pin 3), VIB (pin 4), DISABLE (pin 5), NC (pins 6–7) - isolates control logic from power stage. |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side driver terminals | VOA (pin 9), VDDA (pin 10), GNDA (pin 11), VOB (pin 12), VDDB (pin 13), GNDB (pin 14), NC (pins 15–16) - supports independent high-side/low-side or dual low-side configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Dual isolated channels | Two independent 5 kVRMS-isolated drivers in one SOIC-16 package - eliminates need for two discrete optocouplers and reduces PCB area by >40%. |
| Silicon RF isolation | No LED aging or CTR degradation; 45 ns propagation delay and <1 ns jitter - enables precise timing in 100+ kHz PWM systems. |
| Automotive qualification | AEC-Q100 Grade 1, AIAG PPAP support, IMDS/CAMDS listed - qualified for production use in OBCs, BMS, and EV traction inverters. |
| TTL input hysteresis | >400 mV noise margin on VIA/VIB - sustains reliable operation in >100 V/µs common-mode transient environments (e.g., IGBT switching nodes). |
| UVLO per side | Independent UVLO on VDDI, VDDA, and VDDB - prevents partial activation and shoot-through during asymmetric power-up sequences. |
Applications
| Industrial Motor Control | Solar Inverters |
|---|---|
|
Use Scenario: Driving complementary IGBTs in 3-phase VFDs for HVAC compressors and industrial pumps. IC Role / Device Role: Dual isolated gate driver providing independent, noise-immune turn-on/turn-off signals to high-side and low-side switches. Use Value: 45 ns propagation matching minimizes cross-conduction risk; 5 kVRMS isolation withstands 1500 VDC bus transients per IEC 61800-5-1. |
Use Scenario: Controlling H-bridge MOSFETs in string-level DC-DC optimizers and central inverters. IC Role / Device Role: Isolated level-shifting interface between microcontroller PWM outputs and high-voltage power stage. Use Value: 0.5 A peak drive current enables <100 ns rise/fall times into 10 nF gate loads; SOIC-16 wide-body creepage meets IEC 62109 creepage requirements. |
| Onboard Chargers (OBC) | Battery Management Systems (BMS) |
|
Use Scenario: Gate driving SiC MOSFETs in bidirectional AC/DC and DC/DC stages of EV onboard chargers. IC Role / Device Role: Dual-channel isolated driver delivering synchronized, glitch-free gate signals under high dV/dt noise. Use Value: AEC-Q100 Grade 1 qualification and –40 °C to +125 °C operation ensure reliability in under-hood thermal cycling. |
Use Scenario: Isolating cell-balancing FET controls and precharge/disconnect relays in high-voltage battery packs (400–800 V). IC Role / Device Role: Reinforced insulation barrier separating MCU domain from high-voltage battery domain. Use Value: 5 kVRMS isolation and CSA/UL/VDE certifications meet functional safety requirements for ASIL-B systems per ISO 26262. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8232BD-ASR | Same dual-driver configuration, 0.5 A, 5 kVRMS, SOIC-16 WB - but industrial-grade (no AEC-Q100 or PPAP support). | Lacks automotive qualification documentation (IMDS/CAMDS, PPAP); suitable only for non-automotive industrial designs. | Select SI8232BD-ASR only when AEC-Q100 compliance is not required and cost optimization is prioritized. |
| ADUM4223BRIZ | Analog Devices iCoupler-based dual isolator; 4 A peak output, 5 kVRMS, but requires external gate resistors and has 55 ns propagation delay. | Higher drive strength suits larger IGBTs; however, lack of integrated UVLO per output increases external component count. | Choose ADUM4223BRIZ when >0.5 A drive is needed, but accept added layout complexity and no automotive qualification. |
Compared with SI8232BD-ASR, SI8237BD-ASR adds full automotive process flow and documentation support without sacrificing electrical specs; versus ADUM4223BRIZ, it trades higher peak current for tighter propagation control, integrated UVLO, and drop-in automotive readiness.
Availability
SI8237BD-ASR is available at Aetrix Electronics and suitable for onboard chargers, battery management systems, and solar inverters requiring stable component supply with automotive-grade traceability and long-term lifecycle assurance.
Supply support for SI8237BD-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, isolation, and precision timing technologies.
The Si823x family was designed specifically for high-reliability isolated gate driving in automotive and industrial power conversion, emphasizing noise immunity, safety certification, and AEC-Q100 compliance from wafer to shipment.
FAQ
What is the isolation voltage rating of the SI8237BD-ASR?
The SI8237BD-ASR provides 5.0 kVRMS input-to-output isolation per UL 1577, validated for one-minute withstand testing. This rating supports reinforced insulation in systems with working voltages up to 1500 VDC, including EV traction inverters and industrial motor drives where creepage and clearance must meet IEC 60664-1 requirements.
Does the SI8237BD-ASR include programmable dead time?
No, the SI8237BD-ASR does not include programmable dead time or overlap protection. As a dual-driver variant (Si8232/7 family), its truth table confirms immediate output transitions without internal delay - unlike Si8230/3/4/5 high-side/low-side versions. Timing coordination must be handled externally by the controller.
What is the UVLO threshold for the SI8237BD-ASR input supply?
The SI8237BD-ASR features an 8 V rising UVLO threshold (VDDIUV+) and 7.5 V falling threshold (VDDIUV–) on the input-side supply (VDDI). Both output-side supplies (VDDA and VDDB) have identical 8 V/7.5 V UVLO thresholds, ensuring all domains remain disabled until fully powered.
Is the SI8237BD-ASR pin-compatible with other Si823x devices in SOIC-16 wide-body packages?
Yes, the SI8237BD-ASR shares the same SOIC-16 wide-body footprint and pinout as all Si823x dual-driver variants (e.g., SI8232BD-ASR, SI8235BD-ASR), including identical VIA/VIB/VOA/VOB assignments. However, high-side/low-side variants (e.g., SI8230BD-ASR) repurpose pins for DT and PWM, making them functionally incompatible despite mechanical similarity.
What certifications does the SI8237BD-ASR hold for automotive use?
The SI8237BD-ASR is AEC-Q100 Grade 1 qualified and supported with AIAG-compliant PPAP documentation, IMDS and CAMDS listings, and safety certifications including UL 1577 (5 kVRMS), CSA 62368-1 (reinforced insulation), and VDE 60747-17 - meeting requirements for functional safety in ASIL-B automotive systems.
SI8237BD-ASR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm 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, UL, VDE
SI8237BD-ASR FAQ
1.How can I place an order for SI8237BD-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8237BD-ASR 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 SI8237BD-ASR reliable?
The price and inventory of SI8237BD-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8237BD-ASR is usually 5 days.
3.What payment methods are accepted for SI8237BD-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8237BD-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8237BD-ASR?
SI8237BD-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8237BD-ASR 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 SI8237BD-ASR?
For technical support, including SI8237BD-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8237BD-ASR requirements.
6.How does Aetrix verify that SI8237BD-ASR is sourced from the original manufacturer or authorized distributors?
All SI8237BD-ASR 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 SI8237BD-ASR meets industry standards.
7.What is the process for return or replacement of SI8237BD-ASR?
All SI8237BD-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI8237BD-ASR, 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 SI8237BD-ASR part is unused and in its original packaging.
Return procedure for SI8237BD-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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