TOP243G Power Integrations, TOP243G Datasheet
TOP243G
Specifications of TOP243G
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TOP243G 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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... Safety Spacing Capacitor PRI Input Filter Capacitor PRI BIAS Opto- coupler Design Tools of TOPSwitch- date information on design tools can be found at the Power Integrations Web site: www.powerint.com of the device DS(ON) TOP242-250 Output Filter Capacitors Y1 SEC ...
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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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... Power Integrations reserves the right to make changes to its products at any time to improve reliability or manufacturability. Power Integrations does not assume any liability arising from the use of any device or circuit described herein, nor does it convey any license under its patent rights or the rights of others. ...