TNY274G POWERINT [Power Integrations, Inc.], TNY274G Datasheet
TNY274G
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TNY274G Summary of contents
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TNY274-280 TinySwitch-III Family Energy Efficient, Off-Line Switcher with Enhanced Flexibility and Extended Power Range Product Highlights Lowest System Cost with Enhanced Flexibility • Simple ON/OFF control, no loop compensation needed • Selectable current limit through BP/M capacitor value - Higher ...
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TNY274-280 BYPASS/ MULTI-FUNCTION (BP/M) LINE UNDER-VOLTAGE 115 µA 25 µA 6.4 V ENABLE 1 OSCILLATOR ENABLE/ 1.0 V UNDER- VOLTAGE (EN/UV) Figure 2. Functional Block Diagram. Pin Functional Description DRAIN (D) Pin: This pin is the ...
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MOSFET is controlled by this pin. MOSFET switching is terminated when a current greater than a threshold current is drawn from this pin. Switching resumes when the current being pulled from the pin drops to less than a threshold current. ...
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TNY274-280 In addition, there is a 6.4 V shunt regulator clamping the BYPASS/MULTI-FUNCTION pin at 6.4 V when current is provided to the BYPASS/MULTI-FUNCTION pin through an external resistor. This facilitates powering of TinySwitch-III externally through a bias winding to ...
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Hence, designing the supply involves calculating the primary inductance of the transformer for the maximum output power required. If the TinySwitch-III is appropriately chosen for ...
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TNY274-280 V EN CLOCK DC MAX I DRAIN V DRAIN Figure 9. Operation at Very Light Load. At near maximum load, TinySwitch-III will conduct during nearly all of its clock cycles (Figure 6). At slightly lower load, it will “skip” ...
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Power Up/Down The TinySwitch-III requires only a 0.1 µF capacitor on the BYPASS/MULTI-FUNCTION pin to operate with standard current limit. Because of its small size, the time to charge this capacitor is kept to an absolute minimum, typically 0.6 ms. ...
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TNY274-280 D1 D2 1N4007 1N4007 6.8 µF 400 V 85-265 RV1 VAC 275 VAC 1N4007 1N4007 *R5 and R8 are optional components † configurable to adjust U1 current limit, see ...
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For lower no-load input power consumption, the bias winding may also be used to supply the TinySwitch-III device. Resistor R8 feeds current into the BP/M pin, inhibiting the internal high voltage current source that normally maintains the BP/M pin capacitor ...
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TNY274-280 230 VAC ±15% PRODUCT I -1 LIMIT TNY274 TNY275 10.8 TNY276 11.8 TNY277 15.1 TNY278 19.4 TNY279 23.7 TNY280 P ...
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TOP VIEW + HV DC INPUT - TinySwitch-III EN/UV Figure 15. Recommended Circuit Board Layout for TinySwitch-III with Under-Voltage Lock Out Resistor. Thermal Considerations The four SOURCE pins are internally connected to the IC ...
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TNY274-280 Quick Design Checklist As with any power supply design, all TinySwitch-III designs should be verified on the bench to make sure that component specifications are not exceeded under worst case conditions. The following minimum set of tests is strongly ...
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DRAIN Voltage .................................. ..............-0 700 V DRAIN Peak Current: TNY274.......................400 (750) mA TNY275.....................560 (1050) mA TNY276.....................720 (1350) mA TNY277.....................880 (1650) mA TNY278...................1040 (1950) mA TNY279 ................. 1200 (2250) mA TNY280 ................. 1360 (2550) mA EN/UV Voltage ................................................... -0.3 ...
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TNY274-280 Parameter Symbol CONTROL FUNCTIONS (cont.) I CH1 BP/M Pin Charge Current I CH2 BP/M Pin Voltage V BP/M BP/M Pin Voltage V Hysteresis BP/MH BP/M Pin Shunt V Voltage SHUNT EN/UV Pin Line Under-Voltage I LUV Threshold CIRCUIT PROTECTION ...
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Parameter Symbol CIRCUIT PROTECTION (cont.) Reduced Current Limit (BP/M I Capacitor = 1 µF) LIMITred See Note D Increased Current Limit (BP/M I Capacitor = 10 µF) LIMITinc See Note D Power Coefficient Initial Current Limit I ...
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TNY274-280 Parameter Symbol CIRCUIT PROTECTION (cont.) Thermal Shut- T down Hysteresis SDH BP/M Pin Shut- down Threshold I SD Current BP/M Pin Power- Up Reset Thresh- V BP/M(RESET) old Voltage OUTPUT ON-State R Resistance DS(ON) I DSS1 OFF-State Drain Leakage ...
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Parameter Symbol OUTPUT (cont.) Auto-Restart t ON-Time OSC Auto-Restart DC Duty Cycle AR NOTES accurate estimate of device controller current consumption at no-load, since operating frequency low under these conditions. ...
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TNY274-280 BP/M S EN/UV S NOTE: This test circuit is not applicable for current limit or output characteristic measurements. Figure 16. General Test Circuit. Figure 17. Duty Cycle Measurement 2/06 470 Ω 470 ...
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Typical Performance Characteristics 1.1 1.0 0.9 -50 - 100 125 150 Junction Temperature (°C) Figure 20. Breakdown vs. Temperature. 1.2 1 0.8 0.6 0.4 0 Temperature (°C) Figure 22. Standard Current Limit ...
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TNY274-280 Typical Performance Characteristics (cont.) 50 Scaling Factors: TNY274 1.0 40 TNY275 1.5 TNY276 2.0 TNY277 3.5 30 TNY278 5.5 TNY279 7.3 TNY280 200 400 DRAIN Voltage (V) Figure 26. Drain Capacitance Power ...
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PART ORDERING INFORMATION TNY 278 ⊕ .004 (.10) -E- .240 (6.10) .260 (6.60) Pin 1 .367 (9.32) -D- .387 (9.83) .125 (3.18) .145 (3.68) -T- SEATING PLANE .100 (2.54) BSC .048 (1.22) .053 (1.35) ...
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TNY274-280 ⊕ .004 (.10) -E- .240 (6.10) .260 (6.60) Pin 1 .100 (2.54) (BSC) .367 (9.32) -D- .387 (9.83) .125 (3.18) .145 (3.68) .032 (.81) .048 (1.22) .037 (.94) .053 (1.35 2/06 SMD-8C .046 .060 .086 ...
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TNY274-280 23 E 2/06 ...
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TNY274-280 Revision Notes D Release final data sheet. E Corrected figure numbers and references. For the latest updates, visit our website: www.powerint.com Power Integrations reserves the right to make changes to its products at any time to improve reliability or ...