POWER INTEGRATIONS PFS7624C-TL

The HiperPFS-4 devices incorporate a continuous conduction mode (CCM) boost PFC controller, gate driver and 600 V power MOSFET in a single, low-profle (GROUND pin connected) power package. HiperPFS-4 devices eliminate need for external current sense resistors and their associated power loss, and use an innovative control technique that adjusts the switching frequency over output load, input line voltage, and input line cycle. This control technique maximizes effciency over the entire load range, particularly at light loads. Additionally, it minimizes the EMI fltering requirements due to its wide bandwidth spread spectrum effect. The HiperPFS-4 uses advanced digital techniques for line monitoring, line feed-forward scaling, and power factor enhancement; while using analog techniques for the core controller in order to maintain extremely low no-load power consumption. The HiperPFS-4 also features an integrated non-linear error amplifer for enhanced load transient response, a user programmable Power Good (PG) signal as well as user selectable power limit functionality. HiperPFS-4 includes Power Integrations’ standard set of comprehensive protection features, such as UV, OV, brown-in/out, and hysteretic thermal shutdown. HiperPFS-4 also provides cycle-by-cycle current limit and Safe Operating Area (SOA) protection of the power MOSFET, output power limiting for overload protection, and pin-to-pin short-circuit protection HiperPFS-4’s innovative variable frequency continuous conduction mode operation (VF-CCM) minimizes switching losses by maintaining a low average switching frequency, while modulating the switching frequency in order to suppress EMI, the traditional challenge with continuous conduction mode solutions. Systems using HiperPFS-4 typically reduce the total X and Y capacitance requirements of the converter, the inductance of both the boost choke and EMI noise suppression chokes, thereby reducing overall system size and cost. Additionally, HiperPFS-4 devices dramatically reduce component count and board footprint while simplifying system design and enhancing reliability, when compared with designs that use discrete MOSFETs and controllers. The innovative variable frequency, continuous conduction mode controller enables the HiperPFS-4 to realize all of the benefts of continuous conduction mode operation while leveraging low-cost, small, simple EMI flters. Many regions mandate high power factor for many electronic products with high power requirements. These rules are combined with numerous application-specifc standards that require high power supply effciency across the entire load range, from full load to as low as 10% load. High effciency at light load is a challenge for traditional PFC solutions where fxed MOSFET switching frequencies cause fxed switching losses on each cycle, even at light loads. In addition to featuring fat effciency across the load range, HiperPFS-4 also enables a high power factor of >0.95 at 20% load. HiperPFS-4 simplifes compliance with new and emerging energy-effciency standards over a broad market space in applications such as PCs, LCD TVs, notebooks, appliances, pumps, motors, fans, printers and LED lighting. HiperPFS-4’s advanced power packaging technology and high effciency simplify the complexity of mounting the IC and thermal management, while providing very high power capabilities in a single compact package; these devices are suitable for PFC applications with maximum continuous power from 75 W to 405 W universal (550 W high-line only).

• High effciency and power factor across load range

• 95% effciency from 10% load to 100% load

• <60 mW no-load consumption at 230 VAC
• PF >0.95 achievable at 20% load for H and L packages
• Programmable Power Good (PG) signal
• Digital line peak detection for robust performance even with distorted input voltage from UPS or generators
• Digital power factor enhancer compensates for EMI flter and bridge distortion
• Spread-spectrum across >60 kHz window simplifes EMI fltering
• Protection features include: UVLO, UV, OV, OTP, brown-in/out, cycleby-cycle current limit and power limiting for overload protection
• Withstands 305 VAC steady-state and 410 VAC abnormal input
• Eliminates insulating pad/heat-spreader
• Incorporates 600 V power MOSFET, controller and gate driver
• EN61000-3-2 Class C and Class D compliance
• Integrated protection features reduce external component count
• Accurate built-in brown-in/out protection
• Accurate built-in undervoltage (UV) protection
• Accurate built-in overvoltage (OV) protection
• Hysteretic thermal shutdown (OTP)
• Internal power limiting function for overload protection
• Cycle-by-cycle power-switch current limit
• Internal non-linear error amplifer for enhanced load transient response
• No external current sense resistor required
• Provides ‘lossless’ internal sensing via sense-FET
• Reduces component count and system losses
• Minimizes high current gate drive loop area
• Minimizes output overshoot and stresses during start-up

• PC
• High-power adaptors
• Printer
• High-power LED lighting
• LCD TV
• Industrial and appliance
• Video game consoles
• Generic PFC converters
• 80 Plus Platinum designs