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Skyworks Solutions Inc. SI82520BD-IS3
- Part No.:
- SI82520BD-IS3
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 14-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI82520BD-IS3.pdf
- Description:
- DGTL ISO 5KV 1CH GATE DVR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,900
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Product details
Overview
SI82520BD-IS3 from Skyworks Solutions is a dual-channel, high-side/low-side isolated gate driver IC with 5 kVRMS reinforced isolation, 4.0 A peak sink/source output drive, 30 ns max propagation delay, and programmable dead time (40–600 ns). It operates with 4.5–20 V input-side supply (VDDIH) and 5.5–30 V output-side supplies (VDDA/VDDB), and is used in traction inverters, on-board chargers, and solar inverters to drive IGBTs and power MOSFETs.
For engineers reviewing the SI82520BD-IS3 datasheet, SI82520BD-IS3 pinout, SI82520BD-IS3 application, or SI82520BD-IS3 equivalent, key selection considerations include its 125 kV/µs CMTI, fail-safe default-low outputs during input-side power loss, EN/DIS pin logic configuration, thermal shutdown at >150 °C, and WB SOIC-14 package with 8.0 mm creepage/clearance.
Technical Context
The SI82520BD-IS3 implements RF-based isolation with semiconductor barrier technology-enabling robust noise immunity without startup initialization. Its dual-channel architecture features independent UVLO monitoring per side (VDDIH, VDDA, VDDB), over-temperature protection, and booster-assisted pull-up stage delivering up to +3 A peak current during Miller plateau transition.
It supports high-voltage differential operation (up to 1500 VDC between drivers) and includes programmable dead time via external resistor (DT pin), with timing behavior dependent on simultaneous high states of VIA/VIB. The DIS pin (present in SI82520 variant) forces both outputs low when asserted, with tSD ≤ 35 ns shutdown and tRESTART ≤ 35 ns recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS for 1 minute (UL 1577, VDE/CSA 62368-1 reinforced insulation) |
| Peak Output Current | 4.0 A sink/source (CL = 220 nF, supports fast turn-on of high-Qg IGBTs/MOSFETs) |
| Propagation Delay | 10–30 ns (tpHL/tpLH, enables >30 MHz switching in hard-switched topologies) |
| CMTI | ≥125 kV/µs (ensures reliable operation in high-dV/dt motor drives and inverters) |
| Operating Temperature | –40 °C to +125 °C (supports under-hood automotive and industrial ambient conditions) |
| Dead Time Range | 40–600 ns (programmed via RDT = 6–100 kΩ, prevents shoot-through in half-bridge configurations) |
| VDDIH Range | 4.5–20 V (TTL-compatible input supply, compatible with MCU GPIO or isolated DC-DC rails) |
| Output Supply Range | 5.5–30 V per channel (supports gate drive voltages up to 15 V for SiC/GaN devices) |
Pinout & Package
SI82520BD-IS3 is housed in a WB SOIC-14 (Wide Body Small Outline Integrated Circuit) package with 8.0 mm creepage and clearance, RoHS-compliant, and qualified to AEC-Q100 Grade 1. Pin layout follows standard 14-pin SOIC footprint with gull-wing leads and 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIA | Non-inverting logic input A | TTL-compatible control signal for high-side driver (VOA); high-true, VIH ≥ 1.6 V |
| VIB | Non-inverting logic input B | TTL-compatible control signal for low-side driver (VOB); high-true, VIH ≥ 1.6 V |
| VDDIH | Input-side power supply | 4.5–20 V rail powering internal RF transmitter and logic; UVLO thresholds at 3.2–4.4 V (rising) |
| GNDI | Input-side ground reference | Return path for VIA/VIB/EN/DIS/DT; galvanically isolated from GNDA/GNDB |
| DIS | Active-high disable input | Forces VOA/VOB low unconditionally when high; internal 100 kΩ pull-down |
| DT | Dead time programming input | Resistor-to-ground sets dead time (DT ≈ 5.4 × RDT + 14 ns); only active when both VIA/VIB high |
| VDDA | Driver A power supply | 5.5–30 V source for high-side output (VOA); independent UVLO (5/8/12 V options) |
| VOA | High-side driver output | 4.0 A capable output driving gate of high-side switch; failsafe low if VDDA < UVLO– |
| GNDA | Driver A ground | Return for VDDA/VOA; electrically isolated from GNDI and GNDB |
| VDDB | Driver B power supply | 5.5–30 V source for low-side output (VOB); independent UVLO matching VDDA |
| VOB | Low-side driver output | 4.0 A capable output driving gate of low-side switch; failsafe low if VDDB < UVLO– |
| GNDB | Driver B ground | Return for VDDB/VOB; isolated from GNDI and GNDA; supports ±1500 V differential voltage |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation barrier | Silicon dielectric isolation enabling 5 kVRMS rating, no LED aging, and stable CMTI >125 kV/µs across temperature |
| Booster-assisted pull-up | Parallel NMOS helper transistor delivers +3 A peak current during Miller plateau, reducing turn-on time vs. standard PMOS-only drivers |
| Fail-safe output behavior | VOA/VOB default low when VDDIH is unpowered or below UVLO–, preventing unintended power device activation |
| Independent per-channel UVLO | VDDIH, VDDA, and VDDB each monitored separately; outputs disabled only when their respective supply falls below threshold |
| Thermal shutdown | Internal sensor disables outputs at junction temperature >150 °C, protecting against overload or cooling failure |
| AEC-Q100 qualification | Qualified to Grade 1 (–40 °C to +125 °C), with AIAG PPAP support and IMDS/CAMDS compliance for automotive programs |
Applications
| On-Board Charger (OBC) | Traction Inverter |
|---|---|
Use Scenario: Isolated gate driving of bidirectional SiC MOSFET half-bridges in 11–22 kW AC/DC converters. IC Role / Device Role / Timing Role: High-side/low-side isolated driver providing 4.0 A peak gate current and 30 ns propagation matching to minimize switching losses. Use Value: 125 kV/µs CMTI ensures reliable operation despite high dV/dt from fast SiC switching; programmable dead time prevents shoot-through during phase transitions. |
Use Scenario: Driving IGBT modules in 3-phase motor inverters for battery electric vehicles (BEVs). IC Role / Device Role / Timing Role: Dual-channel isolated driver with fail-safe low outputs during MCU reset or VDDIH dropout. Use Value: 5 kVRMS isolation and 1500 VDC driver-to-driver differential rating enable direct integration into high-voltage DC-link domains without additional isolation barriers. |
| Solar String Inverter | Industrial Isolated DC-DC Converter |
Use Scenario: Gate driving of high-side and low-side switches in interleaved LLC resonant converters for PV string-level MPPT. IC Role / Device Role / Timing Role: Symmetric 4.0 A drive capability supports fast turn-on of high-Ciss GaN FETs at 200+ kHz switching frequencies. Use Value: 40–600 ns programmable dead time allows precise tuning to match transformer leakage inductance and prevent cross-conduction in zero-voltage switching topologies. |
Use Scenario: Driving synchronous rectifiers and primary-side switches in isolated 48 V–12 V DC-DC modules for server PSUs. IC Role / Device Role / Timing Role: Isolated driver with 5.5–30 V output supply range supporting 12 V gate drive for Si MOSFETs and 15 V for SiC devices. Use Value: Booster-assisted pull-up delivers >3 A peak current during Miller plateau, reducing gate charge time and conduction losses in high-current, high-frequency designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side/low-side isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si82521BD-IS3 | EN (enable) pin instead of DIS (disable); identical specs otherwise; same WB SOIC-14 package and pinout except EN replaces DIS | Preferred where active-high enable logic aligns with system controller architecture (e.g., MCU GPIO pull-up default) | Select Si82521BD-IS3 when system requires EN functionality; Si82520BD-IS3 is optimal for active-high disable safety interlocks. |
| ADuM4223ARWZ | 2.5 kVRMS isolation (vs. 5 kVRMS), 4 A peak drive, 55 ns max propagation delay, no programmable dead time, different pinout (SOIC-16) | Suitable for lower-isolation industrial SMPS but not automotive traction or OBC due to reduced CMTI (50 kV/µs) and isolation rating | Choose ADuM4223ARWZ only for cost-sensitive, non-automotive applications where 2.5 kVRMS meets safety requirements and dead time is managed externally. |
Compared with Si82521BD-IS3, SI82520BD-IS3 provides identical performance with DIS logic for fail-safe shutdown, while ADuM4223ARWZ offers lower isolation and timing precision-making SI82520BD-IS3 the preferred choice for AEC-Q100-compliant high-reliability inverters requiring 5 kVRMS and programmable dead time.
Availability
SI82520BD-IS3 is available at Aetrix Electronics and suitable for on-board chargers, traction inverters, and solar string inverters requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.
Supply support for SI82520BD-IS3 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 automotive, industrial, and communications markets.
The Si8252x family was designed specifically for high-reliability isolated gate driving in EV powertrain systems and renewable energy inverters-emphasizing high CMTI, fail-safe behavior, and AEC-Q100 qualification from wafer to final test.
FAQ
What is the isolation voltage rating of the SI82520BD-IS3 and which safety standards does it meet?
The SI82520BD-IS3 is rated for 5 kVRMS isolation for one minute and is certified to UL 1577 (File E257455), VDE/CSA 62368-1 (reinforced insulation), and CQC GB4943.1-2011. Its WB SOIC-14 package provides 8.0 mm creepage and clearance, meeting IEC 60664-1 requirements for reinforced insulation up to 600 VRMS working voltage.
Does the SI82520BD-IS3 support both high-side and low-side gate driving simultaneously?
Yes, the SI82520BD-IS3 integrates two fully isolated drivers in one WB SOIC-14 package: VOA drives the high-side switch (e.g., upper MOSFET in half-bridge) and VOB drives the low-side switch. Each has independent power supplies (VDDA, VDDB), grounds (GNDA, GNDB), and UVLO monitoring-enabling true galvanic separation between channels.
How is dead time programmed on the SI82520BD-IS3, and what is its functional scope?
Dead time on the SI82520BD-IS3 is set by connecting a resistor (RDT) from the DT pin to ground. The typical dead time is DT ≈ 5.4 × RDT + 14 ns (e.g., 6 kΩ yields ~40 ns). It applies only when both VIA and VIB are high-introducing delay between VOA rising and VOB rising (or vice versa)-to prevent shoot-through in half-bridge configurations.
What happens to the outputs of the SI82520BD-IS3 if the input-side supply (VDDIH) is lost?
When VDDIH drops below its UVLO– threshold (~2.7–4.0 V), the SI82520BD-IS3 forces both VOA and VOB low regardless of VIA/VIB states-a fail-safe condition that prevents unintended turn-on of power devices. This behavior is inherent and requires no external circuitry, making it ideal for automotive safety-critical systems.
Is the SI82520BD-IS3 qualified for automotive applications, and what does its AEC-Q100 Grade 1 rating mean?
Yes, the SI82520BD-IS3 is AEC-Q100 qualified Grade 1, meaning it is tested and validated for operation from –40 °C to +125 °C junction temperature, with full PPAP documentation support, IMDS/CAMDS compliance, and automotive-specific manufacturing flows. It is approved for use in on-board chargers, battery management systems, and traction inverters.
SI82520BD-IS3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si8252x
- Package/Case:
- 14-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Number of Channels:
- 1
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 125kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 30ns, 30ns
- Pulse Width Distortion (Max):
- 5.6ns
- Rise / Fall Time (Typ):
- 12ns, 12ns (Max)
- Current - Output High, Low:
- 4A, 4A
- Current - Peak Output:
- 4A
- Voltage - Forward (Vf) (Typ):
- -
- Current - DC Forward (If) (Max):
- -
- Voltage - Output Supply:
- 5.5V ~ 30V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
- Approval Agency:
- CQC, CSA, UL, VDE
SI82520BD-IS3 FAQ
1.How can I place an order for SI82520BD-IS3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI82520BD-IS3 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 SI82520BD-IS3 reliable?
The price and inventory of SI82520BD-IS3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI82520BD-IS3 is usually 5 days.
3.What payment methods are accepted for SI82520BD-IS3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI82520BD-IS3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI82520BD-IS3?
SI82520BD-IS3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI82520BD-IS3 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 SI82520BD-IS3?
For technical support, including SI82520BD-IS3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI82520BD-IS3 requirements.
6.How does Aetrix verify that SI82520BD-IS3 is sourced from the original manufacturer or authorized distributors?
All SI82520BD-IS3 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 SI82520BD-IS3 meets industry standards.
7.What is the process for return or replacement of SI82520BD-IS3?
All SI82520BD-IS3 units undergo pre-shipment inspection (PSI). If there is an issue with SI82520BD-IS3, 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 SI82520BD-IS3 part is unused and in its original packaging.
Return procedure for SI82520BD-IS3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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