HiperLCS

Description

The HiperLCS IC is an integrated LLC power stage incorporating a multi-function controller, high-side and low-side gate drivers, plus two power MOSFETs in a half-bridge configuration. Figure 1 (above) shows a simplified schematic of a HiperLCS based power stage where the LLC resonant inductor is integrated into the transformer.

Product Highlights

Features

• LLC half-bridge power stage incorporating controller, high and low-side gate drives, and high-voltage power MOSFETs
  • Eliminates up to 30 external components
  • Reduces assembly cost and reduces PCB layout loop areas
• High maximum operating frequency of 1 MHz
  • Dramatically reduces magnetics size and allows use of SMD ceramic output capacitors
• Comprehensive fault handling and current limiting
  • Programmable brown-in/out thresholds and hysteresis
  • Undervoltage (UV) and overvoltage (OV) protection
  • Programmable over-current protection (OCP)
  • Short-circuit protection (SCP)
  • Over-temperature protection (OTP)
• Programmable dead-time for optimized design and improved efficiency
• Programmable burst mode maintains regulation at no-load and improves light load efficiency
• Programmable soft-start time and delay before soft-start
• Single package designed for high-power and high-frequency
  • Simple clip attachment to heat sink
  • Exposed thermal pad connected to ground potential – no insulators required between package and heat sink
  • Staggered pin arrangement for simple PC board routing and high-voltage creepage requirements
• Paired with HiperPFS PFC product gives complete, high efficiency, low part count PSU solutions

Applications

• High-efficiency power supplies (80 PLUS Silver, Gold and Platinum)
• LCD TV power supplies
• LED street and area lighting
• Printer power supplies
• Audio amplifiers