TDA8380A NXP Semiconductors, TDA8380A Datasheet
TDA8380A
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TDA8380A Summary of contents
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... DATA SHEET TDA8380A Control circuit for switched mode power supplies Product specification Supersedes data of October 1993 File under Integrated Circuits, IC02 INTEGRATED CIRCUITS November 1993 ...
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... Control circuit for switched mode power supplies GENERAL DESCRIPTION The TDA8380A is an integrated circuit intended for use as a control circuit in low-cost switched mode power supplies for television, monitors and small industrial equipment. The TDA8380A operates using duty factor regulation in the fixed frequency mode ...
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... Philips Semiconductors Control circuit for switched mode power supplies November 1993 3 Product specification TDA8380A ...
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... Oscillator capacitor OSC 11 SYNC Synchronization input 12 SS Maximum duty factor (D 13 CURR Input current protection 14 V Ground Emitter of output sink transistor 16 C1 Collector of output sink transistor November 1993 Fig.2 Pinning diagram. threshold setting ) setting plus slow-start max 4 Product specification TDA8380A ...
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... Philips Semiconductors Control circuit for switched mode power supplies FUNCTIONAL DESCRIPTION The TDA8380A is a control circuit which generates the pulses required to drive the switching transistor in a switched mode power supply (SMPS). Supply This device is intended to be used on the primary side of the power supply and can be supplied via a take-over (auxiliary) winding on the transformer. The device is initialized via a high value resistor connected between the rectified mains voltage and the device’ ...
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... V 4 Fig.4 Oscillator levels. 6 Product specification TDA8380A are therefore, the charging time is proportional ) and is defined by the ratio 12 is defined by: 4/6 V CCmin ...
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... In Fig.6 the disabling threshold (5 used for synchronization. In this case the oscillator starts at the positive going edge of the sync. signal. Fig.6 DC coupled synchronization using the 5.6 V level. November 1993 ); the duty factor of the pulse is not very important. The oscillator starts CC 7 Product specification TDA8380A ...
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... V at the output of the pulse transformer). When synchronization is not used the SYNC pin must be connected must not be connected directly to ground or left open. CC Synchronization pulses present. November 1993 Synchronization pulses not present. Fig.7 Synchronization using a pulse transformer. 8 Product specification TDA8380A ...
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... As soon as the FB voltage exceeds the reference by 0.7 V, the slow-start is triggered. November 1993 . The right-hand curve is passed through at start-up. The FB voltage slowly 12 and starting the regulation curve is kept as small as possible (typically 200 mV). max 9 Product specification TDA8380A ) is reached. A max ...
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... 0 November 1993 Fig.9 Demagnetization function nominal 0.416 and Product specification (see Fig.13), which reflects the primary s at the I input (pin 6) and = 1 ref (V TDA8380A ) the 3 . This voltage ref 6 ...
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... Care should be taken with the external wiring of the output pins to avoid oscillation or interference due to parasitic inductance and wire resistance. During start-up a small current flows from V November 1993 Fig.10 Current protection precharge the series capacitor at the output (see Fig.13 Product specification TDA8380A ...
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... Philips Semiconductors Control circuit for switched mode power supplies November 1993 Fig.11 Saturation curve. 12 Product specification TDA8380A ...
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... Storage temperature range THERMAL RESISTANCE From junction to ambient (in free air) November 1993 SYMBOL MIN. 0.5 0.5 0.5 0.5 0 200 2 tot T 25 amb T 55 stg Fig.12 Power derating curve. 13 Product specification TDA8380A TYP. MAX. UNIT 0 2.5 A see Fig ...
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... V ref I ref dV ref note /dT 7 dD/ min Product specification TDA8380A MIN. TYP. MAX 7.9 8.4 8 100 150 3.6V 3.8V 4.2V ...
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... / note 680 df/dT 15 Product specification TDA8380A MIN. TYP. MAX. 23.8 %/ 100 0 0. 1 ...
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... TC note pulse at pin 13 from 300 mV to 100 mV 500 mA O pulse at pin 13 from 300 mV to 200 mV 500 Product specification TDA8380A MIN. TYP. MAX. 0.5 0.7 0.85 0.9 V 2.5 5.0 7.5 4.2 5.6 6.0 V 390 550 mV 615 645 675 ...
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... Philips Semiconductors Control circuit for switched mode power supplies November 1993 17 Product specification TDA8380A ...
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... Philips Semiconductors Control circuit for switched mode power supplies November 1993 Fig.14 Input and output loading diagram. 18 Product specification TDA8380A ...
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... November 1993 scale (1) ( 1.40 0.53 0.32 21.8 6.48 1.14 0.38 0.23 21.4 6.20 0.021 0.013 0.055 0.86 0.26 0.015 0.009 0.84 0.045 0.24 REFERENCES JEDEC EIAJ MO-001AE 19 Product specification TDA8380A 3.9 8.25 9.5 2.54 7.62 3.4 7.80 8.3 0.15 0.32 0.37 0.10 0.30 0.31 0.13 0.33 EUROPEAN PROJECTION SOT38-1 ( max ...
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... Philips customers using or selling these products for use in such applications their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. November 1993 ). If the printed-circuit board has been pre-heated, forced cooling may stg max 20 Product specification TDA8380A ...