FSL5x8A/H High Performance 800 V Off-Line Switcher with HV Startup and SenseFET

onsemi's FSL5x8A/H PWM power switch provides a base platform for cost-effective design of isolated and non-isolated flyback converters

Image of onsemi's FSL5x8A/H: High Performance 800 V Off-line Switcher with HV Startup and SenseFET onsemi's FSL5x8A/H is an integrated peak-current-mode controlled pulse width modulation (PWM) power switch specifically designed for off-line switch-mode power supplies. The PWM controller includes an advanced soft-start, frequency hopping, optimized gate driver, internal transconductance amplifier, temperature-compensated precise current source for loop compensation, and enhanced self-protection circuitry. Compared with a discrete MOSFET and PWM controller solution, the FSL5x8A/H allows users to reduce total cost, component count, size, and weight while simultaneously increasing efficiency, productivity, and system reliability. This device provides a basic platform for the cost-effective design of both isolated and non-isolated flyback converters.

Features
  • Rugged 800 V FET with 3.8 Ω or 6.3 Ω typical RDS(ON) with built-in HV current source for start-up
  • Fine-tunable skip mode operation
  • Integrated line compensation
  • Line brown-in, brown-out function
  • Line overvoltage protection (LOVP)
  • FSW options: 100 kHz and 130 kHz
  • Seamless implementation of isolated and non-isolated topologies
  • Peak current:
    • FSL538A = 860 mA and FSL538H = 660 mA
    • FSL518A = 610 mA and FSL518H = 460 mA
Benefits
  • Easy and rugged design with minimal external components
  • High efficiency across all operating conditions
  • Constant maximum power limitation
  • Robust design in case of poor AC grid network
  • Allows design trade-offs between space and efficiency
  • Design flexibility
  • Design versatility
Applications
  • Auxiliary and standby power supplies
  • Major home appliances power supplies
  • Low to medium power chargers and adapters
  • White goods (air conditioners, refrigerators, washing machines, and others)
  • E-meters
  • Industrial equipment
  • Consumer equipment power supplies

FSL5x8A/H High Performance 800 V Off-line Switcher with HV Startup and SenseFET

ImageManufacturer Part NumberDescriptionFault ProtectionControl FeaturesAvailable QuantityPriceView Details
IC OFFLINE SWITCH FLYBACK 7DIPFSL518APGIC OFFLINE SWITCH FLYBACK 7DIPCurrent Limiting, Over Load, Over Power, Over Temperature, Over VoltageEN, Soft Start1996 - Immediate$13.42View Details
IC OFFLINE SWITCH FLYBACK 7DIPFSL518HPGIC OFFLINE SWITCH FLYBACK 7DIPCurrent Limiting, Over Load, Over Power, Over Temperature, Over VoltageEN, Soft Start2958 - Immediate$19.10View Details
IC OFFLINE SWITCH FLYBACK 7DIPFSL538APGIC OFFLINE SWITCH FLYBACK 7DIPCurrent Limiting, Over Load, Over Power, Over Temperature, Over VoltageEN, Soft Start0 - Immediate$5.73View Details
IC OFFLINE SWITCH FLYBACK 7DIPFSL538HPGIC OFFLINE SWITCH FLYBACK 7DIPCurrent Limiting, Over Load, Over Power, Over Temperature, Over VoltageEN, Soft Start38 - Immediate$20.33View Details

Evaluation Boards

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
EVAL BOARD FOR FSL518AFSL518AFLYGEVBEVAL BOARD FOR FSL518A2 - Immediate$472.60View Details
EVAL BOARD FOR FSL538AFSL538AFLYGEVBEVAL BOARD FOR FSL538A0 - Immediate$472.60View Details
EVAL BOARD FOR FSL538HFSL538HFLYGEVBEVAL BOARD FOR FSL538H2 - Immediate$472.60View Details
Published: 2020-03-13