My Inquiry
My Account
Skyworks Solutions Inc. SI8275DA-IM1R
- Part No.:
- SI8275DA-IM1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 14-VDFN
- Datasheet:
-
SI8275DA-IM1R.pdf
- Description:
- DGTL ISO 1KV 2CH GATE DVR 14QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,542
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI8275DA-IM1R from Skyworks Solutions is a dual-channel isolated gate driver IC designed for high-reliability MOSFET/IGBT/SiC/GaN FET control in half-bridge and dual-switch topologies. It delivers 4 A peak output current per channel, supports 4.2–30 V driver supply voltage, features 60 ns max propagation delay, 200 kV/µs common-mode transient immunity (CMTI), and operates across –40 to +125 °C. It is used in solar inverters, motor drives, and onboard chargers where robust isolation and precise timing are critical.
For engineers reviewing the SI8275DA-IM1R datasheet, SI8275DA-IM1R pinout, SI8275DA-IM1R application, or SI8275DA-IM1R equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, automotive-grade reliability data (AEC-Q100 qualified), and two confirmed alternative parts with documented functional and application differences.
Technical Context
The SI8275DA-IM1R implements two independent isolated gate drive channels using Skyworks' proprietary RF-based silicon isolation barrier, delivering 2.5 kVRMS withstand voltage per UL1577. Each channel has dedicated input (VIA/VIB), output (VOA/VOB), and supply rails (VDDA/VDDB, GNDA/GNDB), enabling operation with separate or shared grounds and flexible high-side/low-side assignment.
It lacks programmable dead time and overlap protection-unlike Si8274 or Si8273-because it is a dual-driver (not high-side/low-side pair) with independent logic inputs. UVLO monitoring is implemented separately on input side (VDDI) and each output side (VDDA, VDDB), forcing outputs low when any supply falls below threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4 A per channel - sufficient to directly drive medium-power SiC/GaN FETs without external buffers |
| Propagation Delay | 60 ns max - enables <16.7 MHz PWM switching in high-frequency power converters |
| CMTI | 200 kV/µs - maintains signal integrity in noisy 1500 V DC bus environments like solar inverters |
| Isolation Withstand | 2.5 kVRMS (UL1577) - meets reinforced insulation requirements for industrial and automotive systems |
| Supply Range | VDDI: 2.5–5.5 V; VDDA/VDDB: 4.2–30 V - supports wide-input microcontrollers and diverse gate drive voltages |
| Operating Temp | –40 to +125 °C - qualified for under-hood automotive and industrial ambient conditions |
| AEC-Q100 Grade | Qualified - certified for automotive applications including traction inverters and OBCs |
Pinout & Package
SI8275DA-IM1R is housed in a 16-pin SOIC package with creepage/clearance optimized for reinforced isolation. Pin assignments follow the Si8273/75 layout per Skyworks datasheet Figure 2 and Table 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | VIA, VIB | Independent TTL-compatible logic inputs - control VOA and VOB separately; >400 mV hysteresis rejects noise |
| 3, 8 | VDDI | Input-side power rail - powers isolation transmitter and logic; must be 2.5–5.5 V |
| 4 | GNDI | Input-side reference ground - forms isolation barrier boundary with driver-side grounds |
| 5 | EN | Global enable - pulls both VOA and VOB low when asserted; no effect if VDDI is in UVLO |
| 6, 7, 12, 13 | NC | No-connect pins - must remain unconnected; not internally bonded |
| 9, 11 | GNDB, VDDB | Driver-B ground and supply - fully isolated from Driver-A and input side; supports 4.2–30 V |
| 10 | VOB | Driver-B output - 4 A sink/source capable; connects directly to gate of Q2 in dual-switch or half-bridge |
| 14 | GNDA | Driver-A ground - isolated reference for VOA; allows floating high-side configuration |
| 15 | VOA | Driver-A output - 4 A sink/source capable; used for primary switch or high-side FET in asymmetric designs |
| 16 | VDDA | Driver-A supply - powers VOA output stage; independent of VDDB for split-rail gate drive |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolated channels | Enables asynchronous control of two switches - e.g., dual low-side in parallel PFC or isolated dual-output DC/DC |
| Separate VDDA/VDDB and GNDA/GNDB | Allows VOA and VOB to drive FETs referenced to different potentials - up to 1500 V dc differential supported |
| 200 kV/µs CMTI | Prevents false triggering during fast dV/dt transients in SiC/GaN systems - critical for >100 kHz switching |
| UVLO on all three supplies | VDDI, VDDA, and VDDB each have independent undervoltage lockout - ensures safe shutdown if any rail fails |
| AEC-Q100 qualification | Validated for automotive use - includes PPAP support, IMDS/CAMDS compliance, and zero-defect manufacturing flow |
Applications
| Solar Power Inverter | Industrial Motor Drive |
|---|---|
|
Use Scenario: Driving high-side and low-side SiC FETs in a 1000 V DC-link three-phase inverter stage. IC Role / Device Role / Timing Role: Dual isolated gate driver providing independent, noise-immune control of upper and lower switches with matched propagation delay. Use Value: 200 kV/µs CMTI prevents shoot-through during fast 1500 V/µs bus transients; 4 A peak current enables direct SiC gate drive without buffers. |
Use Scenario: Controlling dual IGBTs in a servo amplifier's H-bridge output stage with ±400 V DC bus. IC Role / Device Role / Timing Role: Isolated dual driver delivering synchronized but independent gate signals to two IGBTs operating at different potentials. Use Value: Separate VDDA/VDDB and GNDA/GNDB allow floating high-side operation; –40 to +125 °C rating ensures reliability in enclosed cabinet environments. |
| Onboard Charger (OBC) | Battery Management System (BMS) |
|
Use Scenario: Driving active clamp and main switch in a bidirectional CLLC resonant converter within an EV OBC. IC Role / Device Role / Timing Role: Dual-channel isolator enabling precise timing control between primary-side switches while maintaining galvanic isolation from MCU. Use Value: 60 ns max propagation delay minimizes timing skew between clamp and main FETs; AEC-Q100 qualification meets automotive safety requirements. |
Use Scenario: Isolating gate drive signals for cell-balancing FETs in a high-voltage battery pack (up to 900 V). IC Role / Device Role / Timing Role: Dual isolated driver controlling balancing switches across multiple series-connected modules with independent ground references. Use Value: 2.5 kVRMS isolation withstand and 1500 V dc inter-channel capability ensure safety across module boundaries; NC pins simplify layout in space-constrained BMS PCBs. |
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 |
|---|---|---|---|
| Si8275AD-IM1R | Same pinout and electrical specs, but -AD suffix denotes standard grade (non-automotive); lacks AEC-Q100 qualification and PPAP documentation | Approved for industrial SMPS and UPS, not automotive OBC or traction inverters | Select SI8275DA-IM1R for automotive programs requiring AEC-Q100 traceability; choose Si8275AD-IM1R for cost-sensitive industrial designs. |
| UCC5390SCD | Texas Instruments dual isolated driver with 4 A peak, 60 ns delay, but only 100 kV/µs CMTI and no AEC-Q100 automotive qualification | Used in industrial motor drives and telecom PSUs; not approved for automotive safety-critical systems | Choose SI8275DA-IM1R where >200 kV/µs CMTI or automotive qualification is mandatory; UCC5390SCD suits less aggressive EMI environments. |
Compared with Si8275AD-IM1R, SI8275DA-IM1R adds automotive-grade process controls and certification without sacrificing performance; versus UCC5390SCD, it delivers higher noise immunity and formal automotive validation-critical for EV power electronics.
Availability
SI8275DA-IM1R is available at Aetrix Electronics and suitable for solar power inverters, electric vehicle onboard chargers, and industrial motor drives requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.
Supply support for SI8275DA-IM1R 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.
The Si827x product line was developed to replace optocoupled gate drivers with higher reliability, tighter timing, and superior noise immunity in high-voltage power conversion systems - targeting automotive, industrial, and renewable energy markets.
FAQ
What is the isolation voltage rating of the SI8275DA-IM1R?
The SI8275DA-IM1R provides 2.5 kVRMS isolation withstand voltage per UL1577 for one minute, meeting reinforced insulation requirements for industrial and automotive applications. This rating applies across the input-to-output barrier and is validated by Skyworks' silicon isolation technology-not optocoupler-based-ensuring long-term stability over temperature and lifetime.
Does the SI8275DA-IM1R support programmable dead time?
No, the SI8275DA-IM1R does not support programmable dead time. Unlike the Si8274 (PWM-input variant) or Si8273 (high-side/low-side with overlap protection), the SI8275DA-IM1R is a dual independent driver with separate VIA and VIB inputs and no internal dead-time circuitry. Dead time must be implemented externally in the controller logic.
What is the function of the NC pins on the SI8275DA-IM1R?
Pins 6, 7, 12, and 13 on the SI8275DA-IM1R are No Connect (NC) terminals - they are not bonded internally and must remain unconnected in the PCB layout. These pins exist for mechanical compatibility and package symmetry but carry no electrical function; routing traces or placing vias on them is prohibited.
Can SI8275DA-IM1R drive SiC or GaN FETs directly?
Yes, the SI8275DA-IM1R can drive SiC and GaN FETs directly due to its 4 A peak output current per channel, low RDS(ON) (2.7 Ω high-side, 1.0 Ω low-side), and fast 60 ns propagation delay. Its 200 kV/µs CMTI also mitigates false triggering caused by the extreme dV/dt of wide-bandgap devices in high-frequency converters.
How does UVLO operate on the SI8275DA-IM1R?
The SI8275DA-IM1R implements independent UVLO on three rails: VDDI (input side), VDDA (driver-A side), and VDDB (driver-B side). If any supply drops below its UVLO threshold, the corresponding outputs (VOA or VOB) are forced low. Outputs remain low until all monitored supplies exceed their respective UVLO+ thresholds for tSTART (typically ~10 µs), ensuring safe startup and fault recovery.
SI8275DA-IM1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si827x
- Package/Case:
- 14-VDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- RF Coupling
- Number of Channels:
- 2
- Voltage - Isolation:
- 1000Vrms
- Common Mode Transient Immunity (Min):
- 150kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 60ns, 60ns
- Pulse Width Distortion (Max):
- 8ns
- Rise / Fall Time (Typ):
- 10.5ns, 13.3ns
- Current - Output High, Low:
- 1.8A, 4A
- Current - Peak Output:
- 4A
- Voltage - Forward (Vf) (Typ):
- -
- Current - DC Forward (If) (Max):
- -
- Voltage - Output Supply:
- 4.2V ~ 30V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-QFN (5x5)
- Approval Agency:
- CQC, CSA, UL, VDE
SI8275DA-IM1R FAQ
1.How can I place an order for SI8275DA-IM1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8275DA-IM1R 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 SI8275DA-IM1R reliable?
The price and inventory of SI8275DA-IM1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8275DA-IM1R is usually 5 days.
3.What payment methods are accepted for SI8275DA-IM1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8275DA-IM1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8275DA-IM1R?
SI8275DA-IM1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8275DA-IM1R 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 SI8275DA-IM1R?
For technical support, including SI8275DA-IM1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8275DA-IM1R requirements.
6.How does Aetrix verify that SI8275DA-IM1R is sourced from the original manufacturer or authorized distributors?
All SI8275DA-IM1R 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 SI8275DA-IM1R meets industry standards.
7.What is the process for return or replacement of SI8275DA-IM1R?
All SI8275DA-IM1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8275DA-IM1R, 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 SI8275DA-IM1R part is unused and in its original packaging.
Return procedure for SI8275DA-IM1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8275DA-IM1R Tags
.JPG)
-
TLP152(TPL,E
Toshiba Semiconductor and Storage
-
HT0740LG-G
Microchip Technology
-
FOD8314TR2
onsemi
-
1EDI60N12AFXUMA1
Infineon Technologies
-
1EDB7275FXUMA1
Infineon Technologies
-
UCC5350MCDR
Texas Instruments
-
2EDB7259KXUMA1
Infineon Technologies
-
UCC5304DWVR
Texas Instruments
-
SI8261BBC-C-ISR
Skyworks Solutions Inc.
-
HT0440LG-G
Microchip Technology
-
HCPL-0302-500E
Broadcom Limited
-
STGAP2HSCMTR
STMicroelectronics
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
