This product is not recommended for new designs. TOP221-227 TOPSwitch-II Family Three-Terminal Off-Line PWM Switch Product Highlights AC Lowest cost, lowest component count switcher solution IN Cost competitive with linears above 5 W Very low AC/DC losses up to 90% efficiency Built-in Auto-restart and Current limiting Latching Thermal shutdown for system level protection Implements Flyback, Forward, Boost or Buck topology D Works with primary or opto feedback CONTROL Stable in discontinuous or continuous conduction mode C TOPSwitch Source connected tab for low EMI Circuit simplicity and Design Tools reduce time to market S Description PI-1951-091996 The second generation TOPSwitch-II family is more cost Figure 1. Typical Flyback Application. effective and provides several enhancements over the first generation TOPSwitch family. The TOPSwitch-II family reduces cost in lower power, high efficiency applications. extends the power range from 100W to 150W for 100/115/ The internal lead frame of this package uses six of its pins to 230 VAC input and from 50W to 90W for 85-265 VAC univer- transfer heat from the chip directly to the board, eliminating sal input. This brings TOPSwitch technology advantages the cost of a heat sink. TOPSwitch incorporates all functions to many new applications, i.e. TV, Monitor, Audio amplifiers, necessary for a switched mode control system into a three etc. Many significant circuit enhancements that reduce the terminal monolithic IC: power MOSFET, PWM controller, high sensitivity to board layout and line transients now make the voltage start up circuit, loop compensation and fault protec- design even easier. The standard 8L PDIP package option tion circuitry. Output Power Table 1 2 TO-220 (Y) Package 8L PDIP (P) or 8L SMD (G) Package 3 3 Wide Range Input Single Voltage Input Wide Range Input PART Single Voltage Input PART 85 to 265 VAC 100/115/230 VAC 15% 100/115/230 VAC 15% 85 to 265 VAC ORDER ORDER 4,6 4,6 5,6 5,6 NUMBER P P NUMBER P P MAX MAX MAX MAX TOP221YN 12 W 7 W 9 W 6 W TOP221PN or TOP221GN TOP222PN or TOP222GN TOP222YN 25 W 15 W 15 W 10 W TOP223PN or TOP223GN 25 W TOP223YN 50 W 30 W 15 W TOP224YN TOP224PN or TOP224GN 30 W 20 W 75 W 45 W TOP225YN 100 W 60 W TOP226YN 125 W 75 W TOP227YN 150 W 90 W Notes: 1. Package outline: TO-220/3 2. Package Outline: DIP-8 or SMD-8 3. 100/115 VAC with doubler input 4. Assumes appro- 2 priate heat sinking to keep the maximum TOPSwitch junction temperature below 100 C. 5. Soldered to 1 sq. in. (6.45 cm ), 2 oz. 2 copper clad (610 gm/m ) 6. P is the maximum practical continuous power output level for conditions shown. The continuous MAX power capability in a given application depends on thermal environment, transformer design, efficiency required, minimum spec- ified input voltage, input storage capacitance, etc. 7. Refer to key application considerations section when using TOPSwitch-II in an existing TOPSwitch design. www.power.com August 2016 This Product is Covered by Patents and/or Pending Patent Applications.TOP221-227 V C 0 CONTROL DRAIN Z INTERNAL C SUPPLY 1 SHUTDOWN/ AUTO-RESTART SHUNT REGULATOR/ ERROR AMPLIFIER + 8 5.7 V - 4.7 V 5.7 V V I LIMIT I FB THERMAL S Q SHUTDOWN POWER-UP R Q CONTROLLED RESET TURN-ON GATE DRIVER OSCILLATOR D MAX CLOCK SAW - S Q LEADING EDGE + R Q BLANKING PWM COMPARATOR MINIMUM ON-TIME DELAY R E SOURCE PI-1935-091696 Figure 2. Functional Block Diagram. Pin Functional Description Tab Internally Connected to SOURCE Pin DRAIN Pin: Output MOSFET drain connection. Provides internal bias current during start-up operation via an internal switched high-voltage current source. Internal current sense point. DRAIN SOURCE CONTROL Pin: CONTROL Error amplifier and feedback current input pin for duty cycle control. Internal shunt regulator connection to provide inter- Y Package (TO-220/3) nal bias current during normal operation. It is also used as the connection point for the supply bypass and auto-restart/ compensation capacitor. S S (HV RTN) 1 8 SOURCE Pin: 2 7 S S (HV RTN) YN package Output MOSFET source connection for high 2 6 S (HV RTN) voltage power return. Primary side circuit S common and reference point. 4 5 C D PN and GN package Primary-side control circuit common P Package (DIP-8) and reference point. G Package (SMD-8) PI-2084-040401 SOURCE (HV RTN) Pin: (P and G package only) Output MOSFET source connection for high voltage power Figure 3. Pin Configuration. return. 2 Rev. G 08/16 www.power.com - + + -