Texas Instruments LM25184-Q1 | Demoboard PMP40747

Description

This reference design provides an isolated power supply for automotive IGBT gate drivers. The primary-side regulated flyback controller LM25184-Q1 is used to avoid optocoupler and improve system reliability. Three transformers are used to achieve multiple outputs and facilitate flexible system layout.

Features

• AEC-Q100-qualified for automotive applications
• Device temperature grade 1: –40°C to 125°C ambient temperature range
• Functional Safety-Capable
• Documentation available to aid functional safety system design
• Designed for reliable and rugged applications
• Wide input voltage range of 4.5 V to 42 V
• Robust solution with only one component crossing the isolation barrier
• ±1.5% total output regulation accuracy
• Optional VOUT temperature compensation - –40°C to +150°C junction temperature range
• Integration reduces solution size and cost
• Integrated 65-V, 0.11-Ω power MOSFET
• No optocoupler or transformer auxiliary winding required for VOUT regulation
• High-efficiency PSR flyback operation
• Quasi-resonant MOSFET turnoff in BCM
• Single- and multi-output implementations
• Ultra-low conducted and radiated EMI signatures
• Soft switching avoids diode reverse recovery
• Optimized for CISPR 25 Class 5 requirement
• Create a custom flyback regulator design using WEBENCH® Power Designer

Typical applications

• Traction inverter: IGBT and SiC driver supplies
• Automotive IGBT gate drivers

More information

• Datasheet
• IC product information