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Skyworks Solutions Inc. SI8237BB-B-IS1R
- Part No.:
- SI8237BB-B-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8237BB-B-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,211
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Product details
Overview
SI8237BB-B-IS1R from Silicon Laboratories is a dual-channel isolated gate driver IC with 0.5 A peak output current per channel, 5 kVRMS input-to-output isolation (wide-body SOIC-16 package), 60 ns max propagation delay, and operation from –40 to +125 °C. It serves as a dual independent driver in high-reliability motor control and isolated DC-DC power supply gate drive circuits.
For engineers reviewing the SI8237BB-B-IS1R datasheet, SI8237BB-B-IS1R pinout, SI8237BB-B-IS1R application, or SI8237BB-B-IS1R equivalent, key selection criteria include its dual-driver topology (no overlap protection), 0.5 A output capability, 5 kVRMS reinforced insulation rating, SOIC-16 wide-body package, and compatibility with 2.7–5.5 V input logic and 6.5–24 V driver supplies.
Technical Context
The SI8237BB-B-IS1R implements two fully independent isolated channels using Silicon Labs' proprietary RF-based silicon isolation barrier, eliminating optocoupler aging and enabling robust noise immunity. Each channel features TTL-compatible inputs with 400 mV hysteresis and operates with separate input-side (VDDI) and driver-side (VDDA/VDDB) supplies.
Unlike HS/LS variants (e.g., SI8230/3), this dual-driver variant lacks programmable dead time and overlap protection logic. Its truth table confirms immediate output transitions on input changes-no internal delay-making it suitable for synchronous dual-switch or independent half-bridge topologies where timing coordination is externally managed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS (1 min, UL 1577); certified for reinforced insulation per IEC 60950-1, IEC 60601-1, and VDE 0884-5. |
| Peak Output Current | 0.5 A per channel (sink), enabling direct drive of small-to-medium MOSFETs/IGBTs without external buffers. |
| Propagation Delay | ≤60 ns (max), ensuring precise timing control in high-frequency switching applications up to 8 MHz. |
| Input Supply Range | 2.7–5.5 V (VDDI), compatible with 3.3 V and 5 V logic systems; includes UVLO with 250 mV hysteresis. |
| Driver Supply Range | 6.5–24 V (VDDA/VDDB), supporting standard gate drive voltages for Si, SiC, and GaN power devices. |
| Common-Mode Transient Immunity | ≥45 kV/µs, maintaining signal integrity in noisy high-dv/dt environments like motor drives and inverters. |
| Operating Temperature | –40 to +125 °C ambient, qualified per AEC-Q100 Grade 1 for industrial and automotive under-hood use. |
Pinout & Package
SI8237BB-B-IS1R is housed in a RoHS-compliant 16-pin wide-body SOIC package (WBSOIC-16) with 8.0 mm creepage and clearance, optimized for high-voltage isolation integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Input-side terminals (GNDI, VIA, VIB, VDDI, DISABLE) | Pins 1–8 form the isolated input domain: GNDI (input ground), VIA/VIB (independent logic inputs), VDDI (2.7–5.5 V input supply), DISABLE (active-low enable). |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side terminals (GNDA, VOA, VOB, VDDA, VDDB) | Pins 9–16 form the isolated output domain: GNDA/GNDB (separate driver grounds), VOA/VOB (0.5 A gate outputs), VDDA/VDDB (6.5–24 V driver supplies). |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated channels | Enables fully decoupled control of two power switches-ideal for synchronous buck, dual half-bridge, or isolated auxiliary supplies. |
| RF-based silicon isolation | Eliminates LED degradation and CTR drift; provides stable 50-year lifetime and superior CMTI vs. optocouplers. |
| TTL-compatible inputs with 400 mV hysteresis | Ensures noise-immune logic-level interfacing directly from microcontrollers or PWM controllers without external Schmitt triggers. |
| Reinforced insulation certification | Meets UL 1577 (5 kVRMS), VDE 0884-5, CSA 5A, and CQC GB4943.1-qualified for safety-critical industrial and medical systems. |
| Thermal derating support | Specified safety-limiting current (50 mA) and thermal resistance (θJA = 100 °C/W) enable reliable operation at 125 °C ambient. |
Applications
| Motor Control Systems | Isolated DC-DC Power Supplies |
|---|---|
Use Scenario: Driving high-side and low-side MOSFETs in BLDC inverter stages with galvanic isolation between MCU and power stage. IC Role / Device Role / Timing Role: Dual isolated gate driver providing independent, synchronized turn-on/turn-off control with <60 ns skew between channels. Use Value: Enables compact, high-efficiency motor drives meeting IEC 61800-5-1 reinforced insulation requirements without optocoupler replacement complexity. | Use Scenario: Gate driving primary-side switches in isolated flyback or forward converters where input control must be separated from high-voltage secondary side. IC Role / Device Role / Timing Role: Provides two independently controlled, isolated gate outputs referenced to separate driver grounds (GNDA/GNDB). Use Value: Eliminates need for separate isolated bias supplies per switch; supports single-input control of dual-switch topologies with full 5 kVRMS barrier integrity. |
| Solar Inverters | Industrial PLC Output Modules |
Use Scenario: Controlling half-bridge legs in string-level solar inverters operating at 1000 V DC bus with stringent isolation and reliability demands. IC Role / Device Role / Timing Role: Dual-channel isolated driver delivering 0.5 A peak current per output to drive Si MOSFETs with fast rise/fall times (<20 ns). Use Value: Meets PV system safety standards (IEC 62109) via certified 5 kVRMS isolation and AEC-Q100 qualification for field longevity. | Use Scenario: Isolating digital output signals in programmable logic controller modules that drive 24 V DC solenoids or relays in factory automation. IC Role / Device Role / Timing Role: Dual isolated driver translating 3.3 V/5 V logic to 12–24 V gate drive while maintaining functional isolation between control and load domains. Use Value: Replaces discrete optocoupler + transistor pairs with integrated solution-reducing BOM count, PCB area, and failure points. |
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 |
|---|---|---|---|
| SI8232BB-B-IS1R | Same dual-driver topology, 0.5 A output, and WBSOIC-16 package-but rated for 2.5 kVRMS isolation (NB SOIC-16 footprint). | Lower isolation voltage limits use in <600 VRMS working voltage systems; unsuitable for 1000 V DC solar or industrial mains-connected equipment. | Select SI8232BB-B-IS1R only when 2.5 kVRMS meets safety requirements and board space constraints favor narrow-body SOIC. |
| ADUM4223BRIZ | Analog Devices iCoupler-based dual isolator with 4 A output, 5 kVRMS rating, and integrated Miller clamp-but requires external gate resistors and has higher quiescent current (5 mA vs. 3 mA). | Higher drive strength suits larger SiC/GaN FETs; Miller clamp adds protection but increases design complexity and cost. | Choose ADUM4223BRIZ when >0.5 A peak current or active Miller clamping is required-accepting trade-offs in power efficiency and component count. |
Compared with SI8232BB-B-IS1R and ADUM4223BRIZ, the SI8237BB-B-IS1R uniquely delivers 5 kVRMS isolation in a dual-driver configuration with minimal external components, lower quiescent current, and AEC-Q100 qualification-making it optimal for space-constrained, high-reliability industrial and renewable energy applications where 0.5 A drive suffices.
Availability
SI8237BB-B-IS1R is available at Aetrix Electronics and suitable for motor control systems, isolated DC-DC power supplies, and solar inverters requiring stable component supply, long-term lifecycle assurance, and certified reinforced insulation.
Supply support for SI8237BB-B-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
Silicon Laboratories is a fabless semiconductor company specializing in precision timing, isolation, and mixed-signal ICs for industrial, automotive, and communications markets.
The Si823x product line was engineered to replace aging optocoupler-based gate drivers with robust, high-speed, silicon-isolated alternatives-targeting high-reliability power conversion, motor control, and grid-tied renewable energy systems.
FAQ
What is the isolation voltage rating of the SI8237BB-B-IS1R?
The SI8237BB-B-IS1R is rated for 5 kVRMS input-to-output isolation (1 minute, UL 1577), verified per VDE 0884-5 and CSA Component Notice 5A. This rating applies specifically to the wide-body SOIC-16 package (WBSOIC-16) used by SI8237BB-B-IS1R and enables reinforced insulation in systems up to 600 VRMS working voltage.
Does the SI8237BB-B-IS1R support programmable dead time or overlap protection?
No. The SI8237BB-B-IS1R is a dual-driver variant (per Table 9 in the datasheet) and does not include overlap protection or programmable dead time circuitry. Unlike Si8230/3/4 HS/LS variants, its truth table shows immediate output transitions-making it suitable for externally coordinated dual-switch topologies where timing is managed by the controller.
What are the supply voltage requirements for the SI8237BB-B-IS1R?
The SI8237BB-B-IS1R requires two isolated supplies: VDDI (2.7–5.5 V) for the input side and VDDA/VDDB (6.5–24 V) for each output channel. Input UVLO thresholds are 3.6 V (rising) and 3.3 V (falling) with 250 mV hysteresis; driver-side UVLO depends on selected threshold (5/8/10/12.5 V) and is configured via external resistor.
Can the SI8237BB-B-IS1R drive both N-channel and P-channel MOSFETs?
Yes. The SI8237BB-B-IS1R outputs are non-inverting, rail-to-rail drivers capable of sourcing and sinking current. With appropriate level-shifting and gate resistor selection, it can drive high-side P-channel MOSFETs or low-side N-channel devices. Its outputs reference GNDA/GNDB-allowing flexible connection to either side of a floating power switch.
Is the SI8237BB-B-IS1R qualified for automotive applications?
Yes. The SI8237BB-B-IS1R is AEC-Q100 qualified (Grade 1, –40 to +125 °C), certified for reinforced insulation per IEC 60601-1 (medical) and IEC 60950-1 (industrial), and approved under UL 1577, VDE 0884-5, CSA 5A, and CQC GB4943.1-making it suitable for automotive powertrain and charging systems requiring functional safety compliance.
SI8237BB-B-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:
- Obsolete
- Technology:
- Capacitive Coupling
- Number of Channels:
- 2
- Voltage - Isolation:
- 2500Vrms
- 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
SI8237BB-B-IS1R FAQ
1.How can I place an order for SI8237BB-B-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8237BB-B-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 SI8237BB-B-IS1R reliable?
The price and inventory of SI8237BB-B-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8237BB-B-IS1R is usually 5 days.
3.What payment methods are accepted for SI8237BB-B-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8237BB-B-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8237BB-B-IS1R?
SI8237BB-B-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8237BB-B-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 SI8237BB-B-IS1R?
For technical support, including SI8237BB-B-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8237BB-B-IS1R requirements.
6.How does Aetrix verify that SI8237BB-B-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8237BB-B-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 SI8237BB-B-IS1R meets industry standards.
7.What is the process for return or replacement of SI8237BB-B-IS1R?
All SI8237BB-B-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8237BB-B-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 SI8237BB-B-IS1R part is unused and in its original packaging.
Return procedure for SI8237BB-B-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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