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Skyworks Solutions Inc. SI8237AB-B-IS1R
- Part No.:
- SI8237AB-B-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8237AB-B-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,935
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Product details
Overview
SI8237AB-B-IS1R from Silicon Laboratories is a dual-channel isolated gate driver with 0.5 A peak output current per channel, 5 kVRMS input-to-output isolation (wide-body SOIC-16), 60 ns max propagation delay, and –40 to +125 °C operating range. It serves as a dual independent driver in high-reliability motor control and isolated DC-DC power supply designs.
For engineers reviewing the SI8237AB-B-IS1R datasheet, SI8237AB-B-IS1R pinout, SI8237AB-B-IS1R application, or SI8237AB-B-IS1R equivalent, key selection criteria include its dual-driver architecture (no overlap protection), 0.5 A drive strength, 5 kVRMS reinforced insulation, TTL-compatible inputs with 400 mV hysteresis, and SOIC-16 wide-body package compatibility with industrial layout requirements.
Technical Context
The SI8237AB-B-IS1R implements RF-based silicon isolation with a semiconductor barrier, enabling robust noise immunity without optical degradation. Its dual-channel structure provides fully independent input-to-output signal paths-each channel features separate VDDA/GNDA and VDDB/GNDB supplies, supporting split or common ground configurations.
It operates with 2.7–5.5 V input-side supply (VDDI) and 6.5–24 V driver-side supplies (VDDA/VDDB), includes undervoltage lockout (UVLO) thresholds of 2.15–2.5 V (rising) on VDDI, and delivers 0.5 A sink/source pulsed output current into MOSFET/IGBT gates with 12 ns typical rise/fall times at CL = 200 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS input-to-output (UL1577), verified for reinforced insulation per IEC 60950-1/60601-1 and VDE 0884-5 |
| Peak Output Current | 0.5 A per channel (sink/source), sufficient for driving medium-power MOSFETs in <1 kW inverters |
| Propagation Delay | ≤60 ns (max), enabling reliable operation up to 8 MHz switching frequency |
| Input Hysteresis | 400 mV minimum, ensuring noise immunity against EMI in noisy motor-drive environments |
| Operating Temperature | –40 to +125 °C junction, qualified per AEC-Q100 Grade 1 for automotive-grade thermal robustness |
| Common-Mode Transient Immunity | ≥45 kV/µs, critical for stable operation during fast-switching transients in half-bridge topologies |
| Supply Voltage Range | VDDI: 2.7–5.5 V; VDDA/VDDB: 6.5–24 V - supports flexible biasing across industrial and automotive rails |
Pinout & Package
SI8237AB-B-IS1R is housed in a RoHS-compliant 16-pin wide-body SOIC package (WBSOIC-16) with 8.0 mm creepage/clearance, optimized for high-voltage isolation integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Input-side pins (GNDI, VDDI, VIA, VIB, DISABLE) | Collectively form isolated input domain: GNDI is input ground reference; VDDI powers logic side; VIA/VIB are independent TTL-compatible inputs; DISABLE enables global shutdown |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side pins (GNDA, VDDA, VOA, GNDB, VDDB, VOB) | Two independent output domains: Pins 9–12 serve Channel A (GNDA/VDDA/VOA); Pins 13–16 serve Channel B (GNDB/VDDB/VOB); each supports separate ground and supply |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated channels | Enables fully decoupled gate drive for two discrete power switches-no shared timing constraints or overlap protection required |
| RF-based silicon isolation barrier | Eliminates LED aging and CMTI drift issues inherent in optocouplers; maintains >45 kV/µs immunity over full temperature range |
| TTL-compatible inputs with 400 mV hysteresis | Direct interface with MCU GPIOs or PWM controllers without external level-shifting or Schmitt triggers |
| Wide driver supply range (6.5–24 V) | Supports direct connection to 12 V or 15 V gate drive rails used in industrial motor drives and solar inverters |
| AEC-Q100 Grade 1 qualification | Validated for automotive under-hood applications requiring –40 to +125 °C operation and long-term reliability |
Applications
| Motor Control Systems | Isolated DC-DC Power Supplies |
|---|---|
Use Scenario: Driving high-side and low-side N-channel MOSFETs in three-phase BLDC motor inverters. IC Role / Device Role / Timing Role: Dual-channel isolated gate driver providing independent, synchronized turn-on/turn-off control with precise timing margin. Use Value: Enables compact, high-efficiency motor drives by eliminating bootstrapping complexity and supporting 8 MHz PWM switching. | Use Scenario: Gate driving synchronous rectifiers and primary-side switches in isolated flyback or forward converters. IC Role / Device Role / Timing Role: Provides reinforced-isolation gate drive for secondary-side synchronous rectifiers referenced to floating output grounds. Use Value: Improves converter efficiency by enabling zero-voltage switching and reducing conduction losses via precise 0.5 A drive capability. |
| Solar Inverters | Industrial PLC I/O Modules |
Use Scenario: Controlling half-bridge IGBTs in string-level MPPT inverters exposed to high common-mode dv/dt. IC Role / Device Role / Timing Role: Isolated gate driver delivering robust 5 kVRMS barrier integrity and ≥45 kV/µs CMTI in photovoltaic field environments. Use Value: Ensures system uptime and safety compliance (IEC 62109, UL 1741) under rapid solar irradiance transients. | Use Scenario: Providing isolated digital output drive for 24 V DC industrial actuators and solenoids in programmable logic controller modules. IC Role / Device Role / Timing Role: Dual-channel isolator converting microcontroller logic signals into independently grounded 24 V gate drive outputs. Use Value: Eliminates ground loops and protects controller-side circuitry from field-side surge events per IEC 61000-4-5. |
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 |
|---|---|---|---|
| Si8232AB-B-IS1R | Same dual-driver architecture and 0.5 A rating, but rated for 2.5 kVRMS isolation (narrow-body SOIC-16) | Suitable for lower-isolation applications like non-safety-critical industrial controls where 5 kVRMS is not mandated | Select when board space or cost is prioritized over reinforced insulation; verify creepage/clearance meets end-equipment standards |
| ADuM4223BRIZ | 2.5 kVRMS isolation, 4 A peak output, integrated Miller clamp, but no programmable dead time or overlap protection | Better suited for high-current IGBT gate drive where active Miller clamping is needed, but lacks SI8237AB-B-IS1R's AEC-Q100 qualification | Choose for higher drive strength in non-automotive 400 V systems; confirm UVLO thresholds and thermal derating match design margins |
Compared with Si8232AB-B-IS1R and ADuM4223BRIZ, SI8237AB-B-IS1R uniquely combines 5 kVRMS reinforced insulation, AEC-Q100 Grade 1 qualification, and dual-channel independence in a wide-body SOIC package-making it optimal for safety-critical motor drives and solar inverters requiring highest isolation integrity.
Availability
SI8237AB-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 support, and certified reinforced isolation.
Supply support for SI8237AB-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 delivers high-speed, high-isolation gate drivers using proprietary RF-based silicon isolation-designed specifically for replacing optocouplers in demanding power conversion and motor control applications.
FAQ
What is the isolation voltage rating of SI8237AB-B-IS1R?
The SI8237AB-B-IS1R is rated for 5 kVRMS input-to-output isolation per UL1577, with production-tested withstand voltage of 6.0 kVRMS for 1 second. This rating applies specifically to the wide-body SOIC-16 package (WBSOIC-16) and supports reinforced insulation per IEC 60950-1, IEC 60601-1, and VDE 0884-5 standards-verified for use in safety-critical motor drives and solar inverters.
Does SI8237AB-B-IS1R support programmable dead time or overlap protection?
No, SI8237AB-B-IS1R does not support programmable dead time or overlap protection. As a dual-driver variant (Si8232/7 family), it provides two fully independent isolated channels with no internal timing coordination between outputs. This differs from Si8230/1/3/4 high-side/low-side variants, which integrate overlap protection and dead-time control circuits. SI8237AB-B-IS1R requires external timing control for half-bridge configurations.
What are the UVLO thresholds for SI8237AB-B-IS1R?
SI8237AB-B-IS1R has VDDI UVLO thresholds of 2.15 V (rising) and 2.10 V (falling), with 75 mV hysteresis-optimized for low-voltage logic interfaces. Driver-side UVLO thresholds depend on configuration: 5 V, 8 V, 10 V, or 12.5 V options are selectable via external resistor; default factory setting is 5 V threshold (VDDA/VDDB UVLO+ = 5.20–6.30 V).
Can SI8237AB-B-IS1R drive both N-channel and P-channel MOSFETs?
Yes, SI8237AB-B-IS1R can drive both N-channel and P-channel MOSFETs. Its outputs are push-pull capable with 0.5 A sink and 0.25 A source peak current, and output voltage swing extends from GNDA/GNDB to VDDA/VDDB. For high-side P-channel drive, connect VDDA to system rail and GNDA to switch source; for N-channel, use standard low-side or bootstrap-referenced high-side configurations with appropriate level shifting.
Is SI8237AB-B-IS1R pin-compatible with other Si823x variants?
No, SI8237AB-B-IS1R is not pin-compatible with high-side/low-side Si823x variants (e.g., Si8230/Si8233) due to differing functional pin assignments-particularly the absence of dedicated DT (dead-time) and LPWM pins. However, it shares identical pinout with Si8232AB-B-IS1R and other dual-driver variants (Si8235/6/8) in the same WBSOIC-16 package, enabling drop-in replacement within that subgroup.
SI8237AB-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:
- 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
SI8237AB-B-IS1R FAQ
1.How can I place an order for SI8237AB-B-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8237AB-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 SI8237AB-B-IS1R reliable?
The price and inventory of SI8237AB-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 SI8237AB-B-IS1R is usually 5 days.
3.What payment methods are accepted for SI8237AB-B-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8237AB-B-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8237AB-B-IS1R?
SI8237AB-B-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8237AB-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 SI8237AB-B-IS1R?
For technical support, including SI8237AB-B-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8237AB-B-IS1R requirements.
6.How does Aetrix verify that SI8237AB-B-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8237AB-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 SI8237AB-B-IS1R meets industry standards.
7.What is the process for return or replacement of SI8237AB-B-IS1R?
All SI8237AB-B-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8237AB-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 SI8237AB-B-IS1R part is unused and in its original packaging.
Return procedure for SI8237AB-B-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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