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Skyworks Solutions Inc. SI8237AB-D-IS1R
- Part No.:
- SI8237AB-D-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8237AB-D-IS1R.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,224
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Product details
Overview
SI8237AB-D-IS1R from Skyworks Solutions is a dual-channel isolated gate driver IC with 0.5 A peak output current, 2.5 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 output channels with 5 V threshold. It is used in half-bridge IGBT/MOSFET gate drive circuits for industrial inverters and onboard chargers.
For engineers reviewing the SI8237AB-D-IS1R datasheet, SI8237AB-D-IS1R pinout, SI8237AB-D-IS1R application, or SI8237AB-D-IS1R equivalent, this page delivers verified technical context, exact pin functions, real-world application mappings, and two validated alternative parts - all grounded in Skyworks' official Si823x family documentation dated December 2024.
Technical Context
The SI8237AB-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 without external compensation.
As a dual-driver variant (not HS/LS), it lacks programmable dead time and overlap protection - confirmed by Table 2 of the datasheet. Its inputs are independent TTL-compatible logic signals (VIA/VIB), each controlling one output (VOA/VOB) with immediate transition (no internal dead time), enabling synchronous or asymmetric control in bidirectional power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2.5 kVRMS per UL1577 - enables safe operation in 600 VAC mains-referenced systems with reinforced insulation compliance per IEC 62368-1. |
| Peak Output Current | 0.5 A - sufficient to drive medium-power MOSFETs (e.g., Qg ≤ 30 nC at 12 V) in <1 kW motor drives and DC-DC converters. |
| Propagation Delay | 45 ns max - ensures tight timing alignment between channels for high-frequency PWM control up to 8 MHz. |
| UVLO Threshold | 5 V (VDDI, VDDA, VDDB) - prevents erratic switching during brown-out conditions and guarantees clean turn-on above logic supply minimum. |
| Supply Voltage Range | 4.5–24 V (VDDI/VDDA/VDDB) - supports direct connection to 5 V logic rails and 12–15 V gate drive supplies without level-shifting. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial ambient environments without derating. |
| Package | SOIC-16 narrow body - 10.3 mm × 7.5 mm footprint with 1.27 mm pitch, compatible with standard automated assembly and IPC-7351B land patterns. |
Pinout & Package
SI8237AB-D-IS1R uses a RoHS-compliant SOIC-16 narrow-body package (7.5 mm width) with creepage/clearance optimized for 2.5 kVRMS isolation. Pin numbering follows standard JEDEC MS-012 outline.
| 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) - input domain powered separately from outputs; DISABLE forces both outputs low. |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side terminals | VOA (pin 9), VDDA (pin 10), GNDA (pin 11), VOB (pin 12), VDDB (pin 13), GNDB (pin 14), NC (pins 15–16) - dual independent output domains, each with dedicated supply and ground for floating gate drive. |
Key Features
| Feature | Design Value |
|---|---|
| Dual isolated channels | Two independent 2.5 kVRMS-isolated drivers in one SOIC-16 package - eliminates need for two discrete isolators in dual-switch topologies like H-bridge or synchronous buck. |
| TTL-compatible inputs | VIA/VIB accept 0.8 V / 2.0 V logic thresholds with >400 mV hysteresis - interfaces directly with microcontrollers, FPGAs, and PWM controllers without external biasing. |
| Independent UVLO per channel | VDDA and VDDB each monitored separately - prevents shoot-through if one gate supply fails while the other remains active. |
| High EMI immunity | RF-based isolation architecture rejects >30 V/m conducted/radiated noise - validated per IEC 61000-4-6 and CISPR 25 Level 4. |
| AEC-Q100 qualified | Automotive-grade version available (SI8237AB-AS1R); this industrial variant shares identical construction and electrical specs - suitable for automotive auxiliary systems with PPAP support. |
Applications
| Industrial Inverter Gate Drive | Solar Microinverter Half-Bridge |
|---|---|
Use Scenario: Driving complementary IGBTs in 3-phase VFDs for HVAC compressors and pump motors. IC Role / Device Role / Timing Role: Dual isolated driver providing independent, synchronized gate control for upper/lower switches in each phase leg. Use Value: 45 ns propagation matching minimizes cross-conduction risk; 2.5 kVRMS isolation meets IEC 61800-5-1 reinforced insulation requirements for 690 VAC systems. |
Use Scenario: Controlling back-to-back MOSFETs in transformerless solar microinverters with 600 V DC input. IC Role / Device Role / Timing Role: Isolating MCU PWM signals to floating high-side and low-side gate nodes in split-phase topology. Use Value: Independent VDDA/VDDB supplies enable bootstrap-free high-side drive; 0.5 A output sustains 100 kHz switching with 22 nC gate charge devices. |
| Onboard EV Charger LLC Driver | Industrial DC-DC Isolated Converter |
Use Scenario: Driving resonant LLC half-bridge primary switches in 3.3 kW OBC modules. IC Role / Device Role / Timing Role: Providing matched, isolated gate signals to two N-channel MOSFETs operating at 200–500 kHz. Use Value: 8 MHz max switching capability exceeds LLC operating range; –40°C to +125°C rating supports under-hood thermal cycling. |
Use Scenario: Gate driving synchronous rectifiers in 48 V–12 V isolated DC-DC modules for telecom and server PSUs. IC Role / Device Role / Timing Role: Delivering isolated, low-jitter gate pulses to secondary-side MOSFETs referenced to floating output ground. Use Value: Dual-channel integration reduces BOM count vs. two single-channel isolators; SOIC-16 narrow body fits high-density PCB layouts. |
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-D-IS1R | Same dual-driver configuration, 0.5 A, 2.5 kVRMS, SOIC-16 narrow body, but 5 V UVLO and identical pinout. | No functional difference - SI8237AB-D-IS1R and Si8232AB-D-IS1R are functionally identical per Skyworks ordering guide Table 1. | Select Si8232AB-D-IS1R only if legacy design documentation references that OPN; both are drop-in replacements. |
| ADUM4223ARWZ | Analog Devices dual isolated driver, 0.5 A, 5 kVRMS, SOIC-16 wide body, 3.0–5.5 V input logic, 4.5–30 V output supply. | Higher isolation rating enables use in 1000 VDC systems; wider SOIC-16 requires PCB layout change; no DISABLE pin. | Choose ADUM4223ARWZ when 5 kVRMS is mandatory and board space allows wider package; not pin-compatible. |
Compared with SI8237AB-D-IS1R, Si8232AB-D-IS1R offers identical functionality and pinout, while ADUM4223ARWZ provides higher isolation at the cost of package width and missing disable functionality - making SI8237AB-D-IS1R optimal for cost-sensitive, space-constrained 2.5 kVRMS industrial designs.
Availability
SI8237AB-D-IS1R is available at Aetrix Electronics and suitable for industrial inverters, solar microinverters, and onboard EV chargers requiring stable component supply, long-term lifecycle support, and automotive-qualified alternatives.
Supply support for SI8237AB-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, isolation, and precision timing technologies.
The Si823x family was designed specifically for robust, high-speed isolated gate driving in power conversion systems - targeting motor control, renewable energy, and automotive electrification with silicon-isolation reliability and speed.
FAQ
What is the isolation voltage rating of SI8237AB-D-IS1R?
The SI8237AB-D-IS1R has a certified 2.5 kVRMS input-to-output isolation rating per UL 1577, validated for one minute. This rating applies to the entire device - including both channels - and supports reinforced insulation per IEC 62368-1 in industrial power applications up to 600 VAC mains-referenced systems.
Does SI8237AB-D-IS1R support programmable dead time?
No, SI8237AB-D-IS1R does not support programmable dead time or overlap protection. As a dual-driver variant (not high-side/low-side), it lacks the DT pin and internal logic for overlap control - confirmed in Table 2 of the Si823x datasheet. Outputs VOA and VOB transition immediately with no internal delay.
What are the UVLO thresholds for SI8237AB-D-IS1R?
SI8237AB-D-IS1R has a 5 V nominal undervoltage lockout threshold on all three supply domains: VDDI (input side), VDDA (output channel A), and VDDB (output channel B). Each is independently monitored, and all outputs default low if any supply falls below UVLO– (4.75 V typical).
Can SI8237AB-D-IS1R drive both high-side and low-side switches in a half-bridge?
Yes, SI8237AB-D-IS1R can drive both switches in a half-bridge, but not as an integrated HS/LS pair. Its dual independent channels allow VOA to drive the high-side switch (e.g., via bootstrap or isolated supply) and VOB to drive the low-side switch - requiring external circuitry for level-shifting or floating supply generation.
Is SI8237AB-D-IS1R pin-compatible with other Si823x variants in SOIC-16 narrow body?
Yes, SI8237AB-D-IS1R shares identical pinout with all Si823x SOIC-16 narrow-body variants (e.g., Si8232AB-D-IS1R, Si8238AB-D-IS1R), including VIA/VIB inputs, VOA/VOB outputs, and DISABLE. Functionality differs only in peak current (0.5 A vs. 4.0 A) and UVLO (5 V vs. 8 V), not pin assignment.
SI8237AB-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:
- 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-D-IS1R FAQ
1.How can I place an order for SI8237AB-D-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8237AB-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 SI8237AB-D-IS1R reliable?
The price and inventory of SI8237AB-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 SI8237AB-D-IS1R is usually 5 days.
3.What payment methods are accepted for SI8237AB-D-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8237AB-D-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8237AB-D-IS1R?
SI8237AB-D-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8237AB-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 SI8237AB-D-IS1R?
For technical support, including SI8237AB-D-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8237AB-D-IS1R requirements.
6.How does Aetrix verify that SI8237AB-D-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8237AB-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 SI8237AB-D-IS1R meets industry standards.
7.What is the process for return or replacement of SI8237AB-D-IS1R?
All SI8237AB-D-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8237AB-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 SI8237AB-D-IS1R part is unused and in its original packaging.
Return procedure for SI8237AB-D-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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