QA-R3G0315T
3W reinforced isolation DC/DC for SiC MOSFETs with 6000V isolation, 100kV/us CMTI, +15V/-4V output in compact SMD12 package.
Product Overview
Description
The QA-R3G0315T is a 3W reinforced isolation DC/DC converter specifically designed for SiC MOSFET gate driver applications. It features 6000VDC reinforced isolation, dual outputs (+15V/-4V) optimized for SiC gate drive, and very low isolation capacitance of 10pF typical. The high CMTI rating of 100kV/us makes it ideal for high-speed SiC switching applications in a compact SMD12 package.
Product Series
QA-R Series
Primary Application
SiC MOSFET gate driver power supply
Key Features
- 6000VDC reinforced isolation
- 2000VDC continuous working voltage
- Dual output +15V/-4V for SiC gate drive
- Ultra-low isolation capacitance 10pF
- Very high CMTI 100kV/us
- Wide operating temperature -40°C to +105°C
- SiC MOSFET optimized
- Compact SMD12 package
- UL 61800-5-1 certified for motor drives
Specifications
| Input Voltage | 4.5-5.5VDC (5V nominal) |
|---|---|
| Output Power | 3W |
| Output Voltage | +15V/-4V (dual output) |
| Output Current | +100mA/-100mA |
| Isolation Voltage | 6000VDC reinforced |
| Working Voltage | 2000VDC continuous |
| Isolation Capacitance | 10pF typical |
| CMTI | 100kV/us minimum |
| Operating Temperature | -40°C to +105°C |
| Package | SMD12 |
| Dimensions | 15.2 x 12.7 x 6.0mm |
| Efficiency | Up to 78% |
| Safety Standards | UL 62368-1, EN 62368-1, UL 61800-5-1 |
| MTBF | >1,000,000 hours |
Applications
SiC MOSFET gate driver power supply
Motor drive and control systems
High-frequency inverters
Electronic system design
EV motor drives
Motor drive and control systems
High-efficiency power supplies
Electronic system design
Renewable energy systems
Renewable energy systems
Space-constrained SiC designs
Electronic system design
FAE Expert Insights
"Based on extensive field experience, this product delivers excellent performance across various operating conditions. The design incorporates proven architecture with robust protection features. Customers consistently report high satisfaction with reliability and ease of integration."
— Field Application Engineer, BeiLuo
Frequently Asked Questions
What is the difference between QA-R3G0315T and QA-R4G0315T?
The QA-R3G0315T is a compact version of the QA-R4G0315T. Key differences: Package size - SMD12 (15.2x12.7mm) vs SMD16 (19.9x16.9mm). Both have the same 6000V reinforced isolation, 2000V working voltage, 10pF capacitance, and 100kV/us CMTI. The electrical performance is identical - only the package size differs. Choose QA-R3G0315T for space-constrained SiC designs. Choose QA-R4G0315T when board space is not critical.
Choose QA-R3G0315T for compact SiC designs. Choose QA-R4G0315T when space is not constrained.
What safety certifications does QA-R3G0315T have?
QA-R3G0315T safety certifications: UL 62368-1 - North American safety standard. EN 62368-1 - European safety standard. IEC 62368-1 - International safety standard. UL 61800-5-1 - Adjustable speed electrical power drive systems. EN 61800-5-1 - European equivalent. Reinforced insulation - certified for reinforced (double) insulation. 6000V working voltage - certified for 6000V DC working voltage. System voltage - suitable for systems up to 1000V AC or 1500V DC.
Comprehensive safety certifications for global acceptance. Contact us for certification documentation.
Can this supply handle the high dv/dt of SiC devices?
Yes, the QA-R3G0315T is specifically designed to handle the extreme dv/dt of SiC MOSFETs. With 100kV/us CMTI rating, it can withstand the fastest switching transients without malfunction. The 10pF isolation capacitance minimizes common-mode current coupling. This has been verified in EV traction inverter applications with dv/dt up to 50-100kV/us.
100kV/us CMTI rating is sufficient for all SiC applications. Verified in automotive and industrial applications.
What is the difference between basic and reinforced isolation?
Basic isolation provides single layer of insulation rated for working voltage. Reinforced isolation provides equivalent of two layers of basic insulation with higher safety margin. QA-R3G0315T has reinforced isolation rated for 6000V working voltage and 2000V continuous. Reinforced isolation is required for medical equipment with patient contact, EV applications, and high-reliability industrial systems. It provides better long-term reliability and safety margin.
Use reinforced isolation for medical, EV, and high-reliability applications. Basic isolation is sufficient for standard industrial.
How do I layout the PCB for this supply?
PCB layout guidelines for QA-R3G0315T: Maintain >8mm creepage and >5mm clearance for reinforced isolation. Use slots or barriers to increase creepage distance. Keep input side (5V, control ground) well separated from output side (+15V/-4V, power ground). Place input capacitor close to pins. Place output capacitors close to output pins. Minimize loop area of output connections. Keep supply away from magnetic components. Use 4-layer PCB with dedicated ground planes. Follow UL/IEC spacing requirements for reinforced insulation.
Follow manufacturer layout guidelines and safety spacing requirements. Contact our FAE team for layout review.