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
• High maximum operating frequency of 1 MHz
• Nominal steady-state operation up to 500 kHz
• Dramatically reduces magnetics size and allows use of SMD
ceramic output capacitors
• Precise duty symmetry balances output rectifier current, improving
efficiency
• 50% ±0.3% typical at 300 kHz
• 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
• Programmable burst mode maintains regulation at no-load and
improves light load efficiency
• Programmable soft-start time and delay before soft-start
• Accurate programmable minimum and maximum frequency limits
• Single package designed for high-power and high-frequency
• Reduces assembly cost and reduces PCB layout loop areas
• Simple single clip attachment to 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 amplifier
Description
The HiperLCS™ 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 shows a
simplified schematic of a HiperLCS based power stage where the LLC
resonant inductor is integrated into the transformer.
The variable frequency controller provides high-efficiency by
switching the power MOSFETs at zero voltage (ZVS), eliminating
switching losses.