UCC34141QDHARQ1

The UCC34141-Q1 is an automotive-grade, high-working-voltage DC/DC power module with enhanced isolation, designed for SiC and IGBT isolated gate drivers. A proprietary integrated transformer and advanced control architecture deliver high power density, low noise, and a reduced system BOM. The device provides a typical output power of 1.5W at an ambient temperature of 85℃. High-accuracy dual output voltages are easily set via resistor dividers, enabling low on-resistance, fast, and reliable switching control for SiC/IGBT. Low-latency feedback control reduces output capacitance for fast load transients and supports dynamic voltage programming. Wide input voltage range and adjustable VIN UVLO accommodate wide battery voltages and regulated input rails in electric vehicles. The device operates over a VIN range of 5.5V to 20V and can withstand VIN transient overvoltages up to 28V. Integrated protection features, a power-good fault reporting pin, and an enable function enhance system robustness and reduce external component count. The SOIC package with 8.2mm creepage distance and clearance ensures high isolation capability.

Applications

• HEV/EV inverter and motor control for hybrid, electric, and powertrain systems
• HEV/EV OBC and DC/DC converters
• Data center rack power and thermal management
• Energy infrastructure DC fast charging power modules
• DC fast charging stations
• String inverters
• Power delivery
• Industrial AC-DC

Key features

• Fully integrated isolated planar transformer
• Wide input range: 5.5V to 28V (with 22V OVLO) – Typical output ≥1.5W at 11V ≤ VIN ≤ 13V, 18V ≤ VDD-COM ≤ 20V under TA ≤ 85℃
• Programmable (VDD–COM) output voltage – 15V to 20V, total regulation accuracy ≤ ±1.5%
• Programmable (VEE–COM) output voltage – -2V to -8V, total regulation accuracy ≤ ±5%
• Adaptive spread spectrum modulation (SSM)
• High immunity to magnetic and radiated fields
• Inrush current reduction via soft-start
• ENA pin for logic enable and UVLO input programming
• Open-drain power good for fault indication
• Integrated protection: UVLO, OVLO, short circuit, OVP, UVP, and thermal shutdown
• Isolation capacitance < 3pF
• > 8.2mm creepage distance and clearance
• Static and dynamic CMTI > ±250kV/μs
• AEC-Q100 qualified for automotive applications – Temperature Grade 1: -40℃ ≤ TA ≤ 125℃
• Functional Safety – Documentation available for functional safety system design