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Skyworks Solutions Inc. SI8237AD-B-ISR
- Part No.:
- SI8237AD-B-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8237AD-B-ISR.pdf
- Description:
- DGTL ISO 5KV 2CH GATE DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,095
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Product details
Overview
SI8237AD-B-ISR from Silicon Labs 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), 60 ns max propagation delay, and TTL-compatible inputs with 400 mV hysteresis. It operates from –40 °C to +125 °C and is used in isolated MOSFET/IGBT gate drive circuits for solar inverters and motor control systems.
For engineers reviewing the SI8237AD-B-ISR datasheet, SI8237AD-B-ISR pinout, SI8237AD-B-ISR application, or SI8237AD-B-ISR equivalent, key selection criteria include its dual-driver topology (no HS/LS overlap logic), 0.5 A drive strength, 5 kVRMS reinforced insulation rating, programmable dead time capability, and compatibility with 2.7–5.5 V input supply and 6.5–24 V driver supplies.
Technical Context
The SI8237AD-B-ISR implements two independent RF-modulated isolated channels using Silicon Labs' proprietary silicon isolation barrier-eliminating optocoupler limitations while delivering 45 kV/µs common-mode transient immunity. Each channel features separate input (VIA/VIB) and output (VOA/VOB) domains with fully floating driver-side supplies (VDDA/GNDA and VDDB/GNDB).
It supports dual-driver operation only (no high-side/low-side logic or built-in overlap protection), with no internal dead-time generation-enabling direct PWM control of two independent power switches. Input undervoltage lockout triggers at 2.15–2.5 V (rising) and 2.10–2.40 V (falling) on VDDI, ensuring robust startup behavior across temperature.
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 IGBTs and MOSFETs without external buffers |
| Propagation Delay | ≤60 ns (max), supporting >8 MHz switching frequencies with tight timing control |
| Input Supply Range | 2.7–5.5 V (VDDI), compatible with 3.3 V and 5 V logic systems |
| Driver Supply Range | 6.5–24 V (VDDA/VDDB), allowing flexible gate bias for 12 V or 15 V MOSFET/IGBT applications |
| Common-Mode Immunity | ≥45 kV/µs (min), ensuring reliable operation in noisy power-conversion environments |
| Operating Temperature | –40 °C to +125 °C ambient, qualified per AEC-Q100 for industrial and automotive-grade reliability |
Pinout & Package
SI8237AD-B-ISR is housed in a RoHS-compliant wide-body SOIC-16 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) | Form isolated input domain: VDDI powers logic side; VIA/VIB accept TTL-level signals; DISABLE forces both outputs low |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side pins (GNDA, VDDA, VOA, GNDB, VDDB, VOB) | Two independent isolated output domains: VOA/GNDA and VOB/GNDB each support separate gate-drive supplies and grounds |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated channels | Enables synchronous control of two floating half-bridge legs or independent power stages without shared timing constraints |
| RF-based isolation architecture | Delivers superior CMTI (>45 kV/µs) and lifetime stability vs. LED-based optocouplers, with no LED aging or temperature drift |
| TTL-compatible inputs with 400 mV hysteresis | Ensures noise-immune signal reception in electrically harsh environments, eliminating need for external Schmitt triggers |
| Programmable dead time via external resistor | Supports precise timing coordination between channels using RDT (70–900 ns range), critical for preventing shoot-through in bridge topologies |
| AEC-Q100 qualified | Validated for automotive-grade thermal cycling, ESD, and long-term reliability-suitable for EV traction inverters and onboard chargers |
Applications
| Solar Inverters | Motor Control Systems |
|---|---|
Use Scenario: Isolated gate driving for DC–AC H-bridge in single-phase string inverters operating at 10–20 kHz switching frequency. IC Role / Device Role / Timing Role: Dual-channel isolated driver providing independent, synchronized gate signals to high- and low-side IGBTs in each leg, with <60 ns inter-channel skew. Use Value: 5 kVRMS isolation enables safe interface between microcontroller (24 VDC control domain) and 600 VDC PV bus, meeting IEC 62109 requirements. | Use Scenario: Gate drive for three-phase BLDC motor inverter with space-constrained PCB layout. IC Role / Device Role / Timing Role: Two SI8237AD-B-ISR units (six total channels) drive upper/lower switches per phase, leveraging independent output grounds to simplify snubber design. Use Value: 0.5 A peak sink/source capability directly drives 1200 V/30 A IGBTs with <20 ns rise/fall times, reducing external component count. |
| Industrial UPS | Plasma Display Drivers |
Use Scenario: Bidirectional AC–DC/DC–AC conversion stage in online double-conversion UPS with active PFC and inverter sections. IC Role / Device Role / Timing Role: Dual driver per half-bridge leg ensures galvanic separation between digital controller and 400 VDC bus, supporting fast fault response (<1 µs disable propagation). Use Value: DISABLE pin allows centralized shutdown of all gate drivers during overcurrent events, meeting UL 1778 fault-clearing timing requirements. | Use Scenario: Row/column scanning in monochrome plasma display panels requiring precise, high-voltage pulse timing. IC Role / Device Role / Timing Role: Provides isolated 0.5 A gate drive to sustain high-voltage sustain electrodes (±200 V) with minimal propagation skew between rows. Use Value: 45 kV/µs CMTI prevents false triggering during rapid voltage transients inherent in plasma discharge cycles. |
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-B-IS | Same die, tape-and-reel packaging variant (no cut-tape); identical electrical specs and pinout | No functional difference; intended for automated SMT assembly lines requiring full reel delivery | Select when volume production requires standard reel packaging and no manual handling of cut tape |
| ADuM4223BRIZ | 2.5 kVRMS isolation (SOIC-16 narrow body), 4 A peak output, integrated Miller clamp, no programmable dead time | Better suited for high-current half-bridge applications where shoot-through prevention is handled externally or by gate resistors | Choose when higher drive strength is required and lower isolation voltage suffices for system safety margins |
Compared with Si8237AD-B-IS, SI8237AD-B-ISR offers identical performance but optimized for cut-tape SMT placement; versus ADuM4223BRIZ, SI8237AD-B-ISR provides higher isolation (5 vs. 2.5 kVRMS) and programmable dead time, at the cost of lower peak current (0.5 vs. 4 A), making it preferable for space-constrained, high-isolation industrial inverters.
Availability
SI8237AD-B-ISR is available at Aetrix Electronics and suitable for solar inverters, motor control systems, and industrial UPS requiring stable component supply, long-lifecycle availability, and traceable sourcing for safety-critical designs.
Supply support for SI8237AD-B-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
Silicon Labs is a fabless semiconductor company specializing in precision timing, isolation, and mixed-signal ICs for industrial, automotive, and communications markets.
The Si823x family was designed specifically for high-reliability isolated gate driving in power converters-emphasizing robustness, low propagation skew, and regulatory compliance for reinforced insulation in safety-critical systems.
FAQ
What is the isolation voltage rating of the SI8237AD-B-ISR?
The SI8237AD-B-ISR is rated for 5 kVRMS input-to-output isolation per UL 1577 (1 minute test), validated for reinforced insulation under IEC 60950-1, IEC 60601-1, and VDE 0884-5 standards. This rating applies specifically to the wide-body SOIC-16 package (WBSOIC-16) used in SI8237AD-B-ISR, not narrower variants.
Does the SI8237AD-B-ISR support high-side/low-side logic with built-in overlap protection?
No. The SI8237AD-B-ISR is a dual-driver variant (Si8232/7 family) with independent VIA/VIB inputs and VOA/VOB outputs-no internal HS/LS logic or overlap protection. Unlike Si8230/1/3/4, it requires external timing coordination. Its truth table confirms immediate output transitions without internal dead time.
What is the minimum input supply voltage for reliable operation of the SI8237AD-B-ISR?
The SI8237AD-B-ISR has an input undervoltage lockout (UVLO) threshold of 2.15–2.5 V (rising) and 2.10–2.40 V (falling) on VDDI. Operation below 2.10 V is undefined; sustained operation requires VDDI ≥ 2.7 V per datasheet specifications, with full functionality guaranteed from 2.7 V to 5.5 V.
Can the SI8237AD-B-ISR drive 1200 V IGBTs directly?
Yes-within limits. With 0.5 A peak sink current and ≤20 ns rise/fall times (CL = 200 pF), SI8237AD-B-ISR can directly drive medium-power 1200 V IGBTs (e.g., 30 A rated) when paired with appropriate gate resistors. Thermal derating must be observed: max junction temperature is +150 °C, and θJA = 100 °C/W for the WBSOIC-16 package.
Is the SI8237AD-B-ISR pin-compatible with other Si823x variants like SI8230 or SI8233?
No. While all Si823x devices use the same WBSOIC-16 footprint, SI8237AD-B-ISR (dual driver) has different functional pin assignments than HS/LS variants (e.g., SI8230). Specifically, pins 9–16 are split into two independent output domains (VOA/GNDA/VDDA and VOB/GNDB/VDDB), whereas HS/LS parts share VDDA/VDDB and use dedicated DT/ENABLE pins-making them functionally incompatible without PCB redesign.
SI8237AD-B-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:
- Obsolete
- 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:
- 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
SI8237AD-B-ISR FAQ
1.How can I place an order for SI8237AD-B-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8237AD-B-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 SI8237AD-B-ISR reliable?
The price and inventory of SI8237AD-B-ISR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8237AD-B-ISR is usually 5 days.
3.What payment methods are accepted for SI8237AD-B-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8237AD-B-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8237AD-B-ISR?
SI8237AD-B-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8237AD-B-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 SI8237AD-B-ISR?
For technical support, including SI8237AD-B-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8237AD-B-ISR requirements.
6.How does Aetrix verify that SI8237AD-B-ISR is sourced from the original manufacturer or authorized distributors?
All SI8237AD-B-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 SI8237AD-B-ISR meets industry standards.
7.What is the process for return or replacement of SI8237AD-B-ISR?
All SI8237AD-B-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8237AD-B-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 SI8237AD-B-ISR part is unused and in its original packaging.
Return procedure for SI8237AD-B-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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