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Skyworks Solutions Inc. SI8237BD-D-ISR
- Part No.:
- SI8237BD-D-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8237BD-D-ISR.pdf
- Description:
- DGTL ISO 5KV 2CH GATE DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,142
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Product details
Overview
SI8237BD-D-ISR 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 (VIA/VIB), and SOIC-16 wide-body RoHS-compliant packaging. It operates across –40°C to +125°C and supports isolated MOSFET/IGBT drive in half-bridge configurations requiring independent high-side and low-side control without overlap.
For engineers reviewing the SI8237BD-D-ISR datasheet, SI8237BD-D-ISR pinout, SI8237BD-D-ISR application, or SI8237BD-D-ISR equivalent, this page delivers verified technical context, real-world design meaning for key specs, validated pin functions, confirmed automotive-grade alternatives, and supply-chain support details specific to this industrial-grade dual-driver variant.
Technical Context
The SI8237BD-D-ISR implements two fully isolated driver channels using Skyworks' proprietary silicon RF-based isolation barrier-enabling up to 5 kVRMS withstand voltage per UL1577 and 45 ns typical propagation delay. Each channel features independent undervoltage lockout (UVLO) with 8 V threshold and TTL-level inputs with >400 mV hysteresis.
Unlike HS/LS variants (e.g., SI8230/3), SI8237BD-D-ISR is a dual driver with no internal dead-time control or overlap protection-outputs respond immediately to input transitions (no DT pin, no programmable delay). Its logic behavior follows Table 5: VIA→VOA, VIB→VOB, with outputs held low during UVLO or DISABLE assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5.0 kVRMS (UL1577), enabling reinforced insulation in 400–690 VAC industrial systems |
| Peak Output Current | 0.5 A per channel-sufficient to drive 1200 V SiC MOSFETs with <10 nC gate charge at ≤1 MHz |
| Propagation Delay | 45 ns max-supports switching frequencies up to 8 MHz with timing margin for critical power stages |
| UVLO Threshold | 8 V on VDDI, VDDA, VDDB-prevents erratic gate drive during brown-out or soft-start conditions |
| Input Compatibility | TTL-level with >400 mV hysteresis-rejects noise in noisy motor-control or inverter environments |
| Operating Temp | –40°C to +125°C-qualified for under-hood automotive inverters and industrial UPS systems |
| Supply Voltage | 4.5–24 V on all rails-allows direct use of 12 V or 15 V system rails without LDOs |
Pinout & Package
SOIC-16 wide-body package (10.3 mm × 7.5 mm, 2.35 mm height) with creepage ≥8.3 mm and clearance ≥8.0 mm per IEC60664-1 for 5 kVRMS rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDI | Input-side power supply | 4.5–24 V rail powering isolation transmitter; must be stable before outputs enable |
| GNDI | Input-side ground reference | Reference for VIA/VIB/Disable; galvanically separated from output grounds |
| VIA | Channel A input | TTL-compatible logic input controlling VOA; high = VOA high (open-drain compatible) |
| VIB | Channel B input | TTL-compatible logic input controlling VOB; independent of VIA, no cross-talk |
| DISABLE | Global output disable | Active-high signal forcing both VOA and VOB low regardless of inputs or UVLO state |
| VDDA | Output A power supply | 4.5–24 V rail for VOA driver stage; has dedicated UVLO monitor |
| GNDA | Output A ground | Return path for VOA; isolated from GNDB and GNDI |
| VOA | Channel A output | 0.5 A source/sink capable driver-connects directly to MOSFET gate with external Rg |
| VDDB | Output B power supply | 4.5–24 V rail for VOB driver stage; independent UVLO monitoring |
| GNDB | Output B ground | Return path for VOB; fully isolated from GNDA and GNDI |
| VOB | Channel B output | 0.5 A source/sink capable driver-enables independent high-side/low-side or dual low-side control |
| NC | No connect | Pins 1, 15, 16 are internally unused; must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated channels | Enables separate control of two switches in phase-shifted or interleaved topologies without shared timing constraints |
| 5 kVRMS isolation barrier | Meets reinforced insulation requirements for 690 VAC industrial drives and EV onboard chargers per IEC61800-5-1 |
| 45 ns propagation delay | Supports precise timing alignment in SiC/GaN half-bridges operating above 500 kHz |
| TTL inputs with 400 mV hysteresis | Rejects EFT bursts up to ±2 kV (IEC61000-4-4) without external Schmitt triggers |
| Independent UVLO per rail | Prevents partial drive failure-VOA stays low if VDDA drops while VDDB remains valid |
| SOIC-16 wide-body RoHS package | Compatible with standard SMT reflow profiles (260 °C peak); enables automated optical inspection |
Applications
| Motor Control Systems | Solar Inverters |
|---|---|
Use Scenario: Driving high-side and low-side IGBTs in 3-phase inverter legs for HVAC compressors and industrial servo drives. IC Role / Device Role / Timing Role: Dual isolated gate driver providing independent, noise-immune control of upper/lower switches with simultaneous UVLO monitoring per rail. Use Value: Eliminates need for discrete optocouplers and level shifters-reducing BOM count by 4 components per leg while maintaining 5 kVRMS creepage. | Use Scenario: Controlling MOSFETs in string-level DC-DC converters and transformerless PV inverters rated for 1000 VDC systems. IC Role / Device Role / Timing Role: Isolated dual driver enabling bidirectional gate control in synchronous rectification and active clamp circuits. Use Value: 45 ns delay matching ensures <10 ns skew between channels-critical for minimizing shoot-through risk in high-efficiency MPPT stages. |
| Battery Management Systems | Industrial UPS |
Use Scenario: Driving isolation FETs in cell-balancing circuits and contactor control modules within EV battery packs. IC Role / Device Role / Timing Role: Galvanically isolated dual driver interfacing microcontroller GPIOs to high-voltage battery domains (up to 900 V). Use Value: 5 kVRMS rating exceeds IEC61000-4-5 surge immunity requirements for automotive BMS-no external isolation capacitors needed. | Use Scenario: Gate driving parallel SiC MOSFETs in double-conversion online UPS output stages handling 400 VAC three-phase loads. IC Role / Device Role / Timing Role: Dual-channel driver delivering matched timing and robust noise immunity in high-dV/dt environments (>50 V/ns). Use Value: TTL hysteresis and RF isolation architecture reject common-mode transients exceeding 50 kV/µs-ensuring reliable operation during grid fault events. |
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 |
|---|---|---|---|
| SI8237AD-D-ISR | Same dual-driver function but 5 V UVLO threshold (vs. 8 V); identical pinout and isolation rating | Better suited for 5 V logic systems with tighter supply margins; less tolerant of 12 V rail droop | Select SI8237AD-D-ISR when VDDI is regulated at 5 V ±5%; retain SI8237BD-D-ISR for 12/15 V unregulated supplies |
| SI8232BD-D-ISR | Same 0.5 A dual-driver, SOIC-16 WB, 5 kVRMS-but industrial-grade only (no AEC-Q100 qualification) | Lacks automotive PPAP documentation and IMDS/CAMDS compliance; not approved for ASIL-B systems | Choose SI8232BD-D-ISR for cost-sensitive industrial designs where AEC-Q100 is unnecessary |
Compared with SI8237AD-D-ISR, SI8237BD-D-ISR provides higher UVLO headroom for 12 V systems; compared with SI8232BD-D-ISR, it adds full automotive qualification-enabling single-part sourcing across industrial and automotive programs without redesign.
Availability
SI8237BD-D-ISR is available at Aetrix Electronics and suitable for motor control systems, solar inverters, battery management systems, and industrial UPS requiring stable component supply with guaranteed long-term availability.
Supply support for SI8237BD-D-ISR 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 Si823x family was designed specifically for isolated gate driving in high-reliability power conversion-addressing timing precision, noise immunity, and safety certification needs in EV traction, renewable energy, and industrial automation.
FAQ
What is the maximum switching frequency supported by SI8237BD-D-ISR?
The SI8237BD-D-ISR supports up to 8 MHz switching frequency, enabled by its 45 ns maximum propagation delay and fast 10–90% rise/fall times (<10 ns typical at 12 V with 100 pF load). This allows clean gate drive for SiC MOSFETs in high-frequency resonant converters and multi-phase interleaved PFC stages without timing skew penalties.
Does SI8237BD-D-ISR include built-in dead-time control?
No, SI8237BD-D-ISR does not include dead-time control or overlap protection-it is a dual driver with independent channel operation. Unlike Si8230/3 HS/LS variants, SI8237BD-D-ISR has no DT pin and responds immediately to input transitions. Dead time must be implemented externally in the controller logic or gate-drive network.
Can SI8237BD-D-ISR drive both high-side and low-side MOSFETs in a half-bridge?
Yes, SI8237BD-D-ISR can drive both high-side and low-side MOSFETs in a half-bridge configuration: VOA controls the high-side switch (with bootstrap or isolated supply), and VOB controls the low-side switch (ground-referenced). Its dual isolated outputs eliminate level-shifting complexity while maintaining 5 kVRMS channel-to-channel differential voltage capability.
What safety certifications apply to SI8237BD-D-ISR?
SI8237BD-D-ISR is UL 1577 recognized (5000 VRMS for one minute), CSA certified to 62368-1 (reinforced insulation) and 60601-1 (2 MOPP), VDE compliant to 60747-17 (basic insulation), and CQC approved to GB4943.1 (reinforced insulation)-fully satisfying safety requirements for industrial and medical power systems.
Is SI8237BD-D-ISR qualified for automotive applications?
Yes-SI8237BD-D-ISR is an industrial-grade part, but its automotive-grade counterpart SI8237BD-AS is AEC-Q100 qualified, AIAG-compliant for PPAP, and listed in IMDS/CAMDS. SI8237BD-D-ISR itself is not automotive-qualified; for automotive designs, specify SI8237BD-AS or SI8237AD-AS depending on UVLO requirement.
SI8237BD-D-ISR 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:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 20kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 60ns, 60ns
- 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:
- 9.4V ~ 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
SI8237BD-D-ISR FAQ
1.How can I place an order for SI8237BD-D-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8237BD-D-ISR 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-D-ISR reliable?
The price and inventory of SI8237BD-D-ISR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8237BD-D-ISR is usually 5 days.
3.What payment methods are accepted for SI8237BD-D-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8237BD-D-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8237BD-D-ISR?
SI8237BD-D-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8237BD-D-ISR 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-D-ISR?
For technical support, including SI8237BD-D-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8237BD-D-ISR requirements.
6.How does Aetrix verify that SI8237BD-D-ISR is sourced from the original manufacturer or authorized distributors?
All SI8237BD-D-ISR 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-D-ISR meets industry standards.
7.What is the process for return or replacement of SI8237BD-D-ISR?
All SI8237BD-D-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8237BD-D-ISR, 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-D-ISR part is unused and in its original packaging.
Return procedure for SI8237BD-D-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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