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Skyworks Solutions Inc. SI8237AC-D-IS1R
- Part No.:
- SI8237AC-D-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8237AC-D-IS1R.pdf
- Description:
- DGT ISO 3.75KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,028
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Product details
Overview
SI8237AC-D-IS1R from Skyworks Solutions is a dual-channel isolated gate driver IC with 0.5 A peak output current, 3.75 kVRMS input-to-output isolation, and TTL-compatible dual-input (VIA/VIB) logic interface. It operates across –40°C to +125°C, supports up to 8 MHz switching frequency, and features independent undervoltage lockout (UVLO) on both driver channels - designed for robust MOSFET/IGBT drive in half-bridge and dual-switch topologies.
For engineers reviewing the SI8237AC-D-IS1R datasheet, SI8237AC-D-IS1R pinout, SI8237AC-D-IS1R application, or SI8237AC-D-IS1R equivalent, this page delivers verified specifications, package mapping, functional context, real-world use cases, and validated alternative options - all aligned to Skyworks' final data sheet revision 206326B (Dec 2024).
Technical Context
The SI8237AC-D-IS1R implements two fully isolated driver channels using Skyworks' proprietary silicon RF-based isolation barrier, delivering 45 ns typical propagation delay and high electromagnetic immunity. Unlike optocoupler-based drivers, it requires no startup initialization and provides deterministic timing behavior across temperature and load.
As a dual-driver variant (not HS/LS), it lacks programmable dead time and overlap protection - enabling independent, simultaneous control of two switches. Its inputs are TTL-compatible with >400 mV hysteresis, and each channel features dedicated UVLO (5 V threshold) and rail-to-rail output swing capability up to 24 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 3.75 kVRMS per UL1577 - enables reinforced insulation in industrial power systems up to 1000 VDC bus voltage |
| Peak Output Current | 0.5 A per channel - sufficient to drive medium-power MOSFETs (Qg ≤ 30 nC) at ≤100 kHz in motor control and DC-DC converters |
| Propagation Delay | 45 ns typical - ensures tight timing alignment between dual outputs for synchronous switching applications |
| UVLO Threshold | 5 V (rising), 4.5 V (falling) per channel - prevents erratic gate drive during brown-out conditions on either VDDA or VDDB rail |
| Supply Voltage Range | 4.5–24 V on VDDI, VDDA, VDDB - supports direct connection to 5 V logic and 12–24 V gate drive rails without level-shifting |
| Switching Frequency | Up to 8 MHz - suitable for high-frequency resonant converters and digital power control loops |
| Operating Temperature | –40°C to +125°C ambient - qualified for industrial and automotive under-hood environments |
Pinout & Package
SI8237AC-D-IS1R is housed in a RoHS-compliant SOIC-16 narrow-body package (5.3 mm width, 10.3 mm length) with creepage ≥8.0 mm and clearance ≥7.5 mm - optimized for space-constrained industrial PCB layouts requiring 3.75 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) - defines isolated input domain with internal 5 V UVLO monitoring |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side driver terminals | VOA (pin 9), GNDA (pin 10), VDDA (pin 11), VOB (pin 12), GNDB (pin 13), VDDB (pin 14), NC (pins 15–16) - dual independent output domains, each with dedicated ground and supply pins for floating gate drive |
Key Features
| Feature | Design Value |
|---|---|
| Dual isolated channels | Two independent 0.5 A drivers with 3.75 kVRMS input-to-output and 1500 VDC driver-to-driver differential isolation - eliminates cross-talk in multi-phase systems |
| TTL-compatible inputs | VIA/VIB accept 0–5.5 V logic with >400 mV hysteresis - compatible with microcontrollers, FPGAs, and PWM controllers without external level shifters |
| Independent UVLO per channel | Each output channel monitors its own VDDA/VDDB rail and forces low-state output below 4.5 V - prevents partial turn-on of power devices during supply sag |
| High EMI immunity | RF-based isolation architecture rejects common-mode transients >50 kV/µs - maintains reliable operation in noisy motor drives and inverters |
| AEC-Q100 qualified | Qualified to Grade 1 (–40°C to +125°C) - supports automotive-grade designs including onboard chargers and battery management systems |
Applications
| Motor Control Systems | Solar Inverters |
|---|---|
Use Scenario: Driving high- and low-side IGBTs in 3-phase BLDC motor inverters for HVAC and industrial pumps. IC Role / Device Role / Timing Role: Dual isolated gate driver providing independent, synchronized turn-on/turn-off control of upper and lower switches in each phase leg. Use Value: 45 ns propagation matching minimizes shoot-through risk; 3.75 kVRMS isolation meets IEC 61800-5-1 requirements for 690 VAC motor systems. |
Use Scenario: Controlling MOSFETs in string-level DC-DC optimizers and central inverters operating at 1000 VDC bus voltage. IC Role / Device Role / Timing Role: Isolated dual driver enabling gate control of series-connected high-side switches while maintaining galvanic separation from system ground. Use Value: SOIC-16 narrow-body footprint fits dense PV module PCBs; 5 V UVLO prevents false triggering during partial shading-induced voltage dips. |
| Industrial DC-DC Converters | Onboard Chargers (OBC) |
Use Scenario: Gate driving synchronous rectifiers and primary-side switches in isolated 48 V–12 V bidirectional DC-DC modules for server PSUs. IC Role / Device Role / Timing Role: Dual-channel isolator delivering precise, low-jitter gate signals to both primary and secondary side power stages. Use Value: 8 MHz max switching frequency supports GaN-based topologies; independent VDDA/VDDB supplies simplify auxiliary bias design. |
Use Scenario: Driving half-bridge IGBTs in 6.6 kW AC-DC OBC stages for BEVs, operating with 400–800 VDC battery interfaces. IC Role / Device Role / Timing Role: AEC-Q100 qualified dual driver ensuring safe, isolated gate control in automotive-grade charging subsystems. Use Value: 125°C operation sustains reliability under hood temperatures; 3.75 kVRMS isolation satisfies ISO 6469-3 for electric vehicle safety. |
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 |
|---|---|---|---|
| Si8237AB-D-IS1 | Same dual-driver function and SOIC-16 narrow-body package, but 2.5 kVRMS isolation and 5 V UVLO - lower isolation margin, same temperature range | Acceptable for non-reinforced insulation applications (e.g., low-voltage DC-DC), not suitable for 1000 VDC solar or EV traction systems | Select when cost sensitivity outweighs isolation requirement and system voltage remains ≤600 VDC |
| Si8237BC-D-IS1 | Identical dual-driver configuration and 3.75 kVRMS rating, but 8 V UVLO threshold instead of 5 V - higher turn-on voltage improves noise margin but reduces low-voltage operability | Better suited for 12 V gate drive rails where stable VDDA/VDDB >9 V is guaranteed; less tolerant of brown-out conditions | Choose when system supplies are tightly regulated above 9 V and enhanced noise immunity is prioritized over wide UVLO hysteresis |
Compared with SI8237AC-D-IS1R, Si8237AB-D-IS1 offers lower isolation for cost-sensitive industrial DC-DC, while Si8237BC-D-IS1 trades lower UVLO threshold for improved noise rejection - making SI8237AC-D-IS1R the balanced choice for 5 V logic interfacing and 3.75 kVRMS compliance in solar, motor, and OBC designs.
Availability
SI8237AC-D-IS1R is available at Aetrix Electronics and suitable for motor control systems, solar inverters, industrial DC-DC converters, and onboard chargers requiring stable component supply with automotive-grade qualification and reinforced isolation.
Supply support for SI8237AC-D-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
Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions, with leadership in RF, timing, and isolation technologies for communications, automotive, and industrial markets.
The Si823x family was engineered to replace optocoupler-based gate drivers with higher speed, reliability, and integration - specifically targeting isolated MOSFET/IGBT drive in power conversion, motor control, and EV infrastructure.
FAQ
What is the isolation voltage rating of SI8237AC-D-IS1R?
The SI8237AC-D-IS1R provides 3.75 kVRMS input-to-output isolation per UL1577, verified for one-minute withstand testing. This rating supports reinforced insulation in systems with working voltages up to 1000 VDC, such as solar string inverters and industrial motor drives - confirmed in Skyworks' Final Data Sheet 206326B, Table 1.
Does SI8237AC-D-IS1R support programmable dead time?
No, SI8237AC-D-IS1R does not support programmable dead time or overlap protection. As a dual-driver variant (per Table 2 in the datasheet), it is designed for independent control of two switches - unlike HS/LS variants (e.g., SI8230/3). Dead time must be managed externally in the controller logic when used in half-bridge configurations.
What is the UVLO threshold for SI8237AC-D-IS1R?
The SI8237AC-D-IS1R features a 5 V rising UVLO threshold (VDDIUV+ = 5 V) and 4.5 V falling threshold (VDDIUV– = 4.5 V) on the input side, and identical 5 V/4.5 V thresholds on each output supply rail (VDDA and VDDB). This ensures fail-safe low-state output during brown-out events - specified in Section 2.6 and Table 4 of the datasheet.
Can SI8237AC-D-IS1R drive both high-side and low-side switches in a half-bridge?
Yes, SI8237AC-D-IS1R can drive both high-side and low-side switches in a half-bridge, but only when configured with external timing control - since it lacks built-in dead time. Each channel operates independently: VOA drives the high-side switch (with bootstrap or isolated supply), VOB drives the low-side switch referenced to power ground - as shown in Figure 33A of the datasheet.
Is SI8237AC-D-IS1R qualified for automotive applications?
Yes, SI8237AC-D-IS1R is AEC-Q100 qualified (Grade 1, –40°C to +125°C) and supported by automotive-grade documentation including AIAG-compliant PPAP, IMDS, and CAMDS listings. Its automotive counterpart is SI8237AC-AS1 - confirming suitability for onboard chargers, battery management systems, and traction inverter auxiliary drives.
SI8237AC-D-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:
- 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, UR, VDE
SI8237AC-D-IS1R FAQ
1.How can I place an order for SI8237AC-D-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8237AC-D-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 SI8237AC-D-IS1R reliable?
The price and inventory of SI8237AC-D-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8237AC-D-IS1R is usually 5 days.
3.What payment methods are accepted for SI8237AC-D-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8237AC-D-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8237AC-D-IS1R?
SI8237AC-D-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8237AC-D-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 SI8237AC-D-IS1R?
For technical support, including SI8237AC-D-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8237AC-D-IS1R requirements.
6.How does Aetrix verify that SI8237AC-D-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8237AC-D-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 SI8237AC-D-IS1R meets industry standards.
7.What is the process for return or replacement of SI8237AC-D-IS1R?
All SI8237AC-D-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8237AC-D-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 SI8237AC-D-IS1R part is unused and in its original packaging.
Return procedure for SI8237AC-D-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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