The TOP223YN is a second generation, off line PWM switch in 3 pin TO-220 package. It is a lowest cost and lowest component count switcher solution. Many significant circuit enhancements that reduce sensitivity to board layout and line transients make the design easier. TOPSwitch-II family is more cost effective and provides several enhancements over first generation TOPSwitch family. It incorporates all functions necessary for switched mode control system into three terminal monolithic IC. The TOP223YN has built-in auto restart and current limiting features. It works with primary or opto feedback. The circuit simplicity and design tools reduce time to market. This PWM switch implements flyback, forward, boost or buck topologies. It integrates high voltage power MOSFET, PWM control, fault protection and other control circuitry onto a single CMOS chip.
Output power of 50W at 100/115/230VAC single voltage input and 30W at 85 to 265VAC wide input
Output frequency of 100KHz
Duty cycle range from 1.7% to 67%
Drain supply voltage of 36V
Cost competitive with liners above 5W
Very low AC/DC losses and up to 90% efficiency
Latching thermal shutdown for system level protection
Stable in discontinuous or continuous conduction mode
Source connected tab for low EMI
Operating junction temperature range from -40°C to 150°C
Do not plug this device into a hot IC socket during test. External CONTROL pin capacitance may be charged to excessive voltage and cause device damage.
