TOP242R POWERINT [Power Integrations, Inc.], TOP242R Datasheet
TOP242R
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TOP242R Summary of contents
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TOP242-250 TOPSwitch - GX Family Extended Power, Design Flexible, ® EcoSmart , Integrated Off-line Switcher Product Highlights Lower System Cost, High Design Flexibility • Extended power range to 290 W • Features eliminate or reduce cost of external components • ...
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TOP242-250 Functional Block Diagram ......................................................................................................................................... 3 Pin Functional Description ........................................................................................................................................ 4 TOPSwitch-GX Family Functional Description ........................................................................................................ 5 CONTROL (C) Pin Operation ................................................................................................................................. 6 Oscillator and Switching Frequency ....................................................................................................................... 6 Pulse Width Modulator and Maximum Duty Cycle ................................................................................................. 7 Light Load ...
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V C CONTROL ( SHUNT REGULATOR/ ERROR AMPLIFIER - + 5 (LIMIT) CURRENT LIMIT SOFT START ADJUST ON/OFF EXTERNAL CURRENT LIMIT ( LINE-SENSE ( ...
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TOP242-250 Pin Functional Description DRAIN (D) Pin: High voltage power MOSFET drain output. The internal start-up bias current is drawn from this pin through a switched high-voltage current source. Internal current limit sense point for drain current. CONTROL (C) Pin: ...
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TOPSwitch-GX Family Functional Description Like TOPSwitch, TOPSwitch- integrated switched mode power supply chip that converts a current at the control input to a duty cycle at the open drain output of a high voltage power MOSFET. During normal ...
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TOP242-250 CONTROL (C) Pin Operation The CONTROL pin is a low impedance node that is capable of receiving a combined supply and feedback current. During normal operation, a shunt regulator is used to separate the feed- back signal from the ...
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The nominal switching frequency of 132 kHz was chosen to minimize transformer size while keeping the fundamental EMI frequency below 150 kHz. The FREQUENCY pin (available ...
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TOP242-250 CURRENT LIMIT (X) pin ( package) or MULTI- FUNCTION (M) pin ( package) and the rectified DC high voltage bus, the current limit is reduced with increasing line voltage, allowing a true power limiting ...
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DC of 38% at the OV threshold was MAX chosen to ensure that the power capability of the TOPSwitch-GX is not restricted by this feature under normal operation. Remote ...
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TOP242-250 is also used to generate a temperature-compensated current reference which is trimmed to accurately set the switching frequency, MOSFET gate drive current, current limit, and the line OV/UV thresholds. TOPSwitch-GX has improved circuitry to maintain all of the above ...
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Using Feature Pins FREQUENCY (F) Pin Operation The FREQUENCY pin is a digital input pin available in the package only. Shorting the FREQUENCY pin to SOURCE pin selects the nominal switching frequency of 132 kHz (Figure ...
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TOP242-250 Figure Number Three Terminal Operation Under-Voltage Overvoltage Line Feed Forward (DC ) MAX Overload Power Limiting External Current Limit Remote ON/OFF *This table is only a partial list of many MULTI-FUNCTION pin configurations that are possible. Table 3. Typical ...
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X Pin (Enabled) Output MOSFET Switching (Disabled) I (Default) LIMIT Current Limit DC (78.5%) MAX Maximum Duty Cycle V BG Pin Voltage -250 -200 -150 X and L Pins ( Package) and M Pin ( ...
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TOP242-250 CONTROL Pin EXTERNAL CURRENT LIMIT (X) LINE-SENSE (L) Figure 12a. LINE-SENSE (L), and EXTERNAL CURRENT LIMIT (X) Pin Input Simplified Schematic. CONTROL Pin MULTI-FUNCTION (M) Figure 12b. MULTI-FUNCTION (M) Pin Input Simplified Schematic 1/ and ...
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Typical Uses of FREQUENCY (F) Pin + DC D Input CONTROL Voltage Figure 13. Full Frequency Operation (132 kHz). Figure 15. Half Frequency Standby Mode (For High Standby Input Voltage C PI-2654-071700 Figure 14. Half Frequency Operation ...
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TOP242-250 Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins + DC Input Voltage D L CONTROL Figure 16. Three Terminal Operation (LINE-SENSE and EXTERNAL CURRENT LIMIT Features Disabled. FREQUENCY Pin can be tied ...
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Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins (cont output or can be replaced by a manual switch Input CONTROL Voltage Figure 22. Active-on (Fail ...
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TOP242-250 Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins (cont Input CONTROL Voltage Figure 28. Line-Sensing and Externally Set Current Limit. 18 ...
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Typical Uses of MULTI-FUNCTION (M) Pin + DC Input Voltage D M CONTROL S - Figure 30. Three Terminal Operation (MULTI-FUNCTION Features Disabled Input Voltage D M CONTROL C 6 Figure ...
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TOP242-250 Typical Uses of MULTI-FUNCTION (M) Pin (cont output or can be replaced by a manual switch. DC Input Voltage D M CONTROL Q R ON/OFF Figure 36. Active-on (Fail Safe) Remote ON/OFF. ...
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Application Examples A High Efficiency Universal Input Power Supply The circuit shown in Figure 41 takes advantage of several of the TOPSwitch-GX features to reduce system cost and power supply size and to improve efficiency. This design delivers ...
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TOP242-250 A High Efficiency, Enclosed Universal Adapter Supply The circuit shown in figure 42 takes advantage of several of the TOPSwitch-GX features to reduce cost, power supply size and increase efficiency. This design delivers ...
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A High Efficiency, 250 W, 250 – 380 VDC Input Power Supply The circuit shown in figure 43 delivers 250 84% efficiency using a TOP249 from a 250 to 380 VDC input. DC ...
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TOP242-250 Multiple Output 185-265 VAC Input Power Supply Figure 44 shows a multiple output supply typical for high end set-top boxes or cable decoders containing high capacity hard disks for recording. The supply delivers an output power of ...
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Processor Controlled Supply Turn On/Off A low cost momentary contact switch can be used to turn the TOPSwitch-GX power on and off under microprocessor control that may be required in some applications such as printers. The low power remote off ...
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TOP242-250 In addition to using a minimum number of components, TOPSwitch-GX provides many technical advantages in this type of application: 1. Extremely low power consumption in the off mode typical at 110 VAC and 160 mW typical at ...
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Key Application Considerations TOPSwitch-II vs. TOPSwitch-GX Table 4 compares the features and performance differences between TOPSwitch-GX and TOPSwitch-II. Many of the new features eliminate the need for additional discrete components. Function TOPSwitch-II Soft-Start N/A* External Current Limit N/A* DC 67% ...
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TOP242-250 Function TOPSwitch-II Remote ON/OFF N/A* Synchronization N/A* Thermal Shutdown 125 °C min. Latched Current Limit Tolerance ±10% (@25 °C) -8% (0 °C to100 °C) -4% (0 °C to 100 °C) DRAIN DIP 0.037" / 0.94 mm Creepage SMD 0.037" ...
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Function TOPSwitch-FX P/G Package Current Identical to Y Limits packages Y/R/F Package Current 100% (R and F Limits package N/A*) Thermal Shutdown 125 °C min. 70 °C hysteresis Maximum Duty Cycle 90 µA Reduction Threshold Line Under-Voltage N/A* Negative (turn-off) ...
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TOP242-250 A high V is required to take full advantage of the wider TOPSwitch-GX. An RCD clamp provides tighter clamp voltage tolerance than a Zener clamp and allows a V 150 V. RCD clamp dissipation can be ...
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TOPSwitch-GX contribute to a smaller transformer when compared to TOPSwitch-II. Standby Consumption Frequency reduction can significantly reduce power loss at light or no load, especially when a Zener clamp is used. For very low ...
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TOP242-250 + HV Input Filter Capacitor - S TOP VIEW R1 R2 Figure 47. Layout Considerations for TOPSwitch-GX using Packages. + Input Filter Capacitor HV - TOPSwitch-GX TOP VIEW R1 Heat Sink Figure 48. Layout Considerations for ...
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Solder Side Component Side + TOP VIEW HV - R1a - 1c TOPSwitch-GX Figure 49. Layout Considerations for TOPSwitch-GX using R Package. the part-to-part variation of the R DS(ON) as specified in the data sheet. The margin required can either ...
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TOP242-250 DRAIN Voltage ............................................ -0.3 to 700 V DRAIN Peak Current: TOP242 ............................... 0.72 A TOP243 ............................... 1.44 A TOP244 ............................... 2.16 A TOP245 ............................... 2.88 A TOP246 ............................... 4.32 A TOP247 ............................... 5.76 A TOP248 ............................... 7.20 A TOP249 ...
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Parameter Symbol CONTROL FUNCTIONS Soft Start Time t SOFT PWM Gain DC reg PWM Gain Temperature Drift External Bias l B Current CONTROL Current C(OFF) Duty Cycle Dynamic Z Impedance C Dynamic Impedance Temperature Drift Control Pin ...
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TOP242-250 Parameter Symbol MULTI-FUNCTION (M), LINE-SENSE (L) AND EXTERNAL CURRENT LIMIT (X) INPUTS Line Under-Voltage Threshold Current l UV and Hysteresis ( Pin) Line Over-Voltage or Remote ON/ I OFF Threshold OV Current and Hys- teresis (M or ...
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Parameter Symbol MULTI-FUNCTION (M), LINE-SENSE (L) AND EXTERNAL CURRENT LIMIT (X) INPUTS Remote ON Delay t R(ON) Remote OFF t R(OFF) Setup Time FREQUENCY INPUT FREQUENCY Pin V Threshold Voltage F FREQUENCY Pin I Input Current F CIRCUIT PROTECTION Self ...
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TOP242-250 Parameter Symbol CIRCUIT PROTECTION Leading Edge t LEB Blanking Time t Current Limit Delay IL(D) Thermal Shutdown Temperature Thermal Shutdown Hysteresis Power-up Reset V Threshold Voltage C(RESET) OUTPUT ON-State R Resistance DS(ON) Off-State I Current DSS Breakdown BV Voltage ...
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Parameter Symbol OUTPUT t Rise Time R Fall Time t F SUPPLY VOLTAGE CHARACTERISTICS DRAIN Supply Voltage Shunt Regulator V Voltage C(SHUNT) Shunt Regulator Temperature Drift l CD1 Control Supply/ Discharge Current l CD2 NOTES: A. For specifications with negative ...
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TOP242-250 VOLTAGE Figure 50. Duty Cycle Measurement. 120 100 Dynamic 1 = Impedance Slope CONTROL Pin Voltage (V) Figure 51. CONTROL Pin I-V Characteristic Package (X and ...
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BENCH TEST PRECAUTIONS FOR EVALUATION OF ELECTRICAL CHARACTERISTICS The following precautions should be followed when testing TOPSwitch-GX by itself outside of a power supply. The sche- matic shown in Figure 53 is suggested for laboratory testing of TOPSwitch-GX. When the ...
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TOP242-250 Typical Performance Characteristics (cont.) 1.1 1.0 0.9 -50 - 100 125 150 Junction Temperature (°C) Figure 56. Breakdown Voltage vs. Temperature. 1.2 1.0 0.8 0.6 0.4 0.2 0 -50 - 100 ...
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Typical Performance Characteristics (cont.) 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 0 100 200 LINE-SENSE Pin Current ( A) Figure 62a. LINE-SENSE Pin Voltage vs. Current See 1 Expanded Version 0 -300 -200 ...
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TOP242-250 Typical Performance Characteristics (cont Scaling Factors: 3 TOP250 1.17 TOP249 1.00 TOP248 0.83 2 TOP247 0.67 TOP246 0.50 TOP245 0.33 1 TOP244 0. °C TOP243 0.17 CASE T = 100 °C TOP242 0.08 ...
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PART ORDERING INFORMATION TOP 242 .400 (10.16) .146 (3.71) .415 (10.54) .156 (3.96) .108 (2.74) REF + .467 (11.86) .487 (12.37) .860 (21.84) .880 (22.35) .026 (.66) PIN 1 .032 (.81) .050 (1.27) BSC .150 (3.81) BSC ...
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TOP242-250 ⊕ .004 (.10) -E- .245 (6.22) .255 (6.48) Pin 1 .375 (9.53) -D- .385 (9.78) .128 (3.25) .132 (3.35) -T- SEATING PLANE .100 (2.54) BSC .014 (.36) ⊕ .010 (.25) M .022 (.56) ...
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Ref .026 (0.66) .032 (0.81) .315 (8.00) .380 (9.65) .638 (16.21) .050 (1.27) .038 (0.97) TO-263-7C .245 (6.22) min. .225 (5.72) min. .580 (14.73) ...
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TOP242-250 .396 - .415 .795 (20.18) REF. PIN 1 .050 (1.27) BSC .150 (3.81) BSC .050 (1.27) .050 (1.27) .050 (1.27) .200 (5.08) .100 (2.54) PIN 1 .150 (3.81) MOUNTING HOLE PATTERN Y07C 48 G 1/02 TO-262-7C .055 - .066 ...
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Notes TOP242-250 G 49 1/02 ...
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TOP242-250 50 G 1/02 Notes ...
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Notes TOP242-250 G 51 1/02 ...
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TOP242-250 Revision Notes - D 1) Added R package (D2PAK Corrected abbreviations (s = seconds). 3) Corrected x-axis units in Figure 11 (µA). 4) Added missing external current limit resistor in Figure Corrected spelling. 6) ...