JW1550
JW1550 is Active Clamp Flyback Controller manufactured by JoulWatt Technology.
Active Clamp Flyback Controller
Preliminary Specifications Subject to Change without Notice
DESCRIPTION
JW®1550 is an active clamp flyback controller for offline flyback converter applications. The JW1550 can be adopted to reduce switching loss and provide high efficiency in whole load range.
JW1550 provide two control outputs, the main power switch control and the active clamp switch control.
JW1550 also has X-cap discharge function to discharge the X-cap when the input is unplugged, which lowers standby power.
The JW1550 is available in QFN4X4-20 package. pany’s Logo is Protected, “JW” and “JOULWATT” are Registered Trademarks of Joul Watt technology Inc.
Features
- Boundary Mode Operation at Heavy Load
- DCM Operation at Light Load
- Burst Mode Control
- Built-in Soft-start Function
- X-cap Discharge Function
- Include a Boost Converter, Allow Vin Range
2.5-38V
- Maximum Frequency Setting with a Single
External Resistor
- Adjustable Line pensation
- High Switching Frequency up to 1.5MHz
- Reliable Fault Protections: VIN OVP/UVP,
VS OVP/UVP, SCP, Brown-In/Out, OTP, CS Open and Short Protection
- QFN4X4-20 Package
APPLICATIONS
- Adaptor
TYPICAL APPLICATION
T1
SR C ontr olle r
VBUS
OTP RT RFM EN
VS...
