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Skyworks Solutions Inc. SI8237BD-B-ISR
- Part No.:
- SI8237BD-B-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8237BD-B-ISR.pdf
- Description:
- DGTL ISO 5KV 2CH GATE DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,997
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Product details
Overview
SI8237BD-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-designed for high-reliability IGBT/MOSFET drive in solar inverters and industrial motor control.
For engineers reviewing the SI8237BD-B-ISR datasheet, SI8237BD-B-ISR pinout, SI8237BD-B-ISR application, or SI8237BD-B-ISR equivalent, this page delivers verified electrical specs, safety-certified isolation parameters, thermal derating data, and real-world use cases aligned to AEC-Q100 qualified operation across –40°C to +125°C.
Technical Context
The SI8237BD-B-ISR implements two independent RF-modulated isolation channels using Silicon Labs' proprietary silicon-dielectric barrier, enabling simultaneous high-side and low-side gate drive without shared ground constraints. Each channel features undervoltage lockout (UVLO) on both input (2.15–2.5 V threshold) and output (5/8/10/12.5 V selectable) supplies, plus programmable dead time via external resistor.
It operates as a dual driver (not HS/LS), with separate VIA/VIB inputs controlling VOA/VOB outputs independently-no overlap protection or internal dead-time logic. Its 2.5 kVRMS isolation rating applies to narrow-body SOIC-16 packaging, confirmed by UL1577, VDE 0884-5, and CSA Component Notice 5A certifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 2.5 kVRMS (UL1577, 1 min); validated for narrow-body SOIC-16 package per datasheet Table 3 |
| Peak Output Current | 0.5 A per channel (sink), 0.25 A per channel (source); sufficient for driving medium-power IGBTs up to 30 A |
| Propagation Delay | ≤60 ns (max), 30 ns (typ); enables >8 MHz switching in hard-switched topologies |
| Input Hysteresis | 400 mV minimum; rejects noise on TTL-level control signals in noisy industrial environments |
| Operating Temperature | –40°C to +125°C ambient; supports under-hood automotive and industrial enclosure deployments |
| Supply Voltage Range | VDDI: 2.7–5.5 V; VDDA/VDDB: 6.5–24 V; allows flexible biasing from 3.3 V logic and 12/15/24 V gate supplies |
| Common-Mode Transient Immunity | ≥45 kV/µs (min); maintains signal integrity during fast dV/dt events in SiC/GaN systems |
Pinout & Package
SI8237BD-B-ISR is housed in a RoHS-compliant 16-pin narrow-body SOIC (NBSOIC-16) package with 1.27 mm pitch, 7.5 mm body width, and 10.3 mm length-optimized for space-constrained power stages while maintaining 4.0 mm creepage/clearance per CSA/VDE requirements.
| 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: GNDI is input ground reference; VDDI powers input logic; VIA/VIB accept independent TTL inputs; DISABLE forces both outputs low |
| 9, 10, 11, 12, 13, 14, 15, 16 | Output-side pins (GNDA, VDDA, VOA, GNDB, VDDB, VOB) | Form dual isolated output domains: GNDA/VDDA/VOA drive Channel A; GNDB/VDDB/VOB drive Channel B-each with independent ground and supply |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated channels | Enables fully decoupled gate drive for half-bridge legs or dual-phase control without shared return paths |
| Programmable dead time | Configurable via external RDT (6 kΩ–220 kΩ) from 70 ns to 900 ns-supports precise timing alignment in synchronous rectifiers |
| AEC-Q100 qualification | Validated for automotive-grade reliability (Grade 1: –40°C to +125°C), including HTOL, TC, and ESD testing |
| Transient immunity >45 kV/µs | Prevents false triggering during high dV/dt transients common in SiC-based inverters and motor drives |
| Low quiescent current | IDDI(Q) ≤ 3 mA (input), IDDA(Q)/IDDB(Q) ≤ 3.0 mA per channel-reduces standby power in always-on systems |
Applications
| Solar Inverter DC-AC Stage | Industrial Motor Drive Half-Bridge |
|---|---|
Use Scenario: Driving complementary IGBTs in three-phase inverter legs of 5–15 kW string inverters. IC Role / Device Role / Timing Role: Dual isolated gate driver providing independent, noise-immune turn-on/turn-off control for high-side and low-side switches. Use Value: 60 ns propagation matching minimizes shoot-through risk; 2.5 kVRMS isolation meets IEC 62109 safety requirements for PV system grounding. | Use Scenario: Controlling N-channel MOSFETs in servo amplifier output stages operating at 20 kHz PWM. IC Role / Device Role / Timing Role: Isolated dual driver delivering matched timing and rail-to-rail output swing to minimize conduction losses. Use Value: 0.5 A sink current ensures fast turn-off of 100 nC gate charge devices; –40°C to +125°C range supports enclosed cabinet operation. |
| UPS Inverter Module | EV Onboard Charger PFC Stage |
Use Scenario: Gate-driving boost PFC switches in 3 kW line-interactive UPS units with active cooling. IC Role / Device Role / Timing Role: Dual-channel isolator enabling synchronous gate control with programmable dead time to prevent cross-conduction. Use Value: External RDT tuning allows dead time optimization for varying MOSFET gate thresholds and temperature drift. | Use Scenario: Driving interleaved totem-pole PFC GaN HEMTs in 6.6 kW OBC designs requiring reinforced insulation. IC Role / Device Role / Timing Role: Isolated dual driver supplying independent 0.5 A gate current to high-frequency GaN switches. Use Value: 45 kV/µs CMTI prevents misfiring during fast 100 V/ns transitions; narrow-body SOIC fits compact 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 |
|---|---|---|---|
| Si8237AD-B-ISR | Same pinout and function, but rated for 5 kVRMS isolation (wide-body SOIC-16); higher creepage/clearance | Required where reinforced insulation per IEC 62368-1 or UL 62368-1 mandates ≥5 kVRMS working voltage | Select when board layout permits wider 10.3 mm package and safety standards require 5 kVRMS test margin |
| UCC5390SCDR | Texas Instruments dual-channel isolator with 4 A peak output, integrated Miller clamp, and 3.75 kVRMS isolation (SOIC-16) | Better suited for high-current SiC MOSFETs needing >1 A gate drive; lacks programmable dead time | Choose when driving >50 A switches or requiring active Miller clamping-accept trade-off of no dead-time tuning |
Compared with SI8237BD-B-ISR, Si8237AD-B-ISR offers higher isolation for stringent safety-critical systems, while UCC5390SCDR provides greater drive strength and protection features at the cost of configurability and lower CMTI (35 kV/µs).
Availability
SI8237BD-B-ISR is available at Aetrix Electronics and suitable for solar inverter DC-AC stages, industrial motor drive half-bridges, and UPS inverter modules requiring stable component supply, long-term lifecycle support, and certified isolation performance.
Supply support for SI8237BD-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 wireless solutions for industrial, automotive, and communications markets.
The Si823x product line delivers robust, high-speed isolated gate drivers targeting high-efficiency power conversion systems where reliability, noise immunity, and safety certification are mandatory.
FAQ
What is the isolation rating of SI8237BD-B-ISR and which standard does it meet?
The SI8237BD-B-ISR has a 2.5 kVRMS input-to-output isolation rating, validated per UL1577 (File E257455), VDE 0884-5 (IEC 60747-5-5), and CSA Component Notice 5A. This rating applies specifically to its narrow-body SOIC-16 package and is production-tested to 4.5 kVRMS for 1 second, meeting reinforced insulation requirements for industrial equipment per IEC 62368-1.
Does SI8237BD-B-ISR support programmable dead time, and how is it configured?
Yes, SI8237BD-B-ISR supports programmable dead time via an external resistor (RDT) connected between DT pin (Pin 13) and VDDI. With RDT = 6 kΩ, dead time is ~70 ns; with RDT = 100 kΩ, it is ~900 ns. The maximum usable resistor is 220 kΩ. This feature is active only in high-side/low-side variants (e.g., SI8230), but SI8237BD-B-ISR is a dual driver and does not implement overlap protection or dead-time logic-its truth table shows immediate output response with no internal delay.
What are the UVLO thresholds for SI8237BD-B-ISR on input and output supplies?
SI8237BD-B-ISR features dual-stage UVLO: input-side VDDI UVLO triggers at 2.15 V (rising) / 2.10 V (falling) with 75 mV hysteresis; output-side VDDA/VDDB UVLO is configurable-selectable thresholds include 5 V (rising: 5.20 V), 8 V (7.50 V), 10 V (9.60 V), or 12.5 V (12.4 V), each with corresponding hysteresis. These thresholds are set by part number suffix and cannot be changed post-manufacture.
Can SI8237BD-B-ISR drive both IGBTs and MOSFETs, and what gate charge range is supported?
Yes, SI8237BD-B-ISR can drive both IGBTs and MOSFETs. With 0.5 A peak sink current and 0.25 A peak source current, it supports gate charges up to ~100 nC at 20 kHz switching (e.g., 1200 V/30 A IGBTs or 650 V/40 A Si-MOSFETs). For higher Qg devices, external gate resistors must be optimized to balance switching speed and ringing-datasheet Figure 16 confirms rise/fall times remain <20 ns with 100 pF load.
Is SI8237BD-B-ISR pin-compatible with other Si823x family members like SI8230 or SI8233?
No, SI8237BD-B-ISR is not pin-compatible with SI8230 or SI8233. While all Si823x parts use the same NBSOIC-16 footprint, their functional pin assignments differ: SI8230/3/4 are high-side/low-side drivers with dedicated overlap logic, whereas SI8237BD-B-ISR is a dual driver with independent VIA/VIB → VOA/VOB mapping and no DT or LPWM pins. Pin 13 (DT) on SI8237BD-B-ISR is a no-connect, unlike SI8230 where it controls dead time.
SI8237BD-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:
- 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
SI8237BD-B-ISR FAQ
1.How can I place an order for SI8237BD-B-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8237BD-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 SI8237BD-B-ISR reliable?
The price and inventory of SI8237BD-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 SI8237BD-B-ISR is usually 5 days.
3.What payment methods are accepted for SI8237BD-B-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8237BD-B-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8237BD-B-ISR?
SI8237BD-B-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8237BD-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 SI8237BD-B-ISR?
For technical support, including SI8237BD-B-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8237BD-B-ISR requirements.
6.How does Aetrix verify that SI8237BD-B-ISR is sourced from the original manufacturer or authorized distributors?
All SI8237BD-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 SI8237BD-B-ISR meets industry standards.
7.What is the process for return or replacement of SI8237BD-B-ISR?
All SI8237BD-B-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8237BD-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 SI8237BD-B-ISR part is unused and in its original packaging.
Return procedure for SI8237BD-B-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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