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TOP254PN Datasheet(PDF) 38 Page - Power Integrations, Inc. |
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TOP254PN Datasheet(HTML) 38 Page - Power Integrations, Inc. |
38 / 48 page ![]() Rev. F 01/09 38 TOP252-262 www.powerint.com Figure 51. Duty Cycle Measurement. Figure 52. CONTROL Pin I-V Characteristic. Figure 53. Drain Current Operating Envelope. Figure 54. TOPSwitch-HX General Test Circuit. PI-2039-033001 DRAIN VOLTAGE HV 0 V 90% 10% 90% t2 t1 D = t1 t2 120 100 80 40 20 60 0 56 7 8 9 CONTROL Pin Voltage (V) 1 Slope Dynamic Impedance = 0.8 1.3 1.2 1.1 0.9 0.8 1.0 0 01 2 6 8 3 Time ( s) 45 7 0.7 0.6 0.5 0.4 0.3 0.2 0.1 IINIT(MIN) tLEB (Blanking Time) PI-4738-071408 5-50 V 5-50 V S4 40 V 0.1 μF 47 μF 470 Ω 5 W TOP254-258 Y, all E, L or M Packages (X and V Pins) P or G Package (M Pin) 470 Ω 0-300 k Ω 0-60 k Ω 0-60 k Ω 0-300 k Ω NOTES: 1. This test circuit is not applicable for current limit or output characteristic measurements. 2. For P, G and M packages, short all SOURCE pins together. D D S FX C V M C CONTROL TOPSwitch-HX S1 S5 S3 0-15 V S2 S GX C CONTROL TOP259-261 Y (X and V Pins) 5-50 V 0-300 k Ω |
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