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TEA1522T Folha de dados(PDF) 8 Page - NXP Semiconductors |
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TEA1522T Folha de dados(HTML) 8 Page - NXP Semiconductors |
8 / 20 page TEA152X All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 04 — 14 September 2010 8 of 20 NXP Semiconductors TEA152x SMPS ICs for low-power systems 8.10 OverVoltage Protection (OVP) Overvoltage protection can be achieved in the application by pulling pin REG above its normal operation level. The current primary stroke is terminated immediately, and no new primary stroke is started until the voltage on pin REG drops to its normal operation level. Pin REG has an internal clamp. The current feed into this pin must be limited. 8.11 Output characteristics of complete power-plug Typical characteristics: • Output power: A wide range of output power levels can be handled by choosing the RDS(on) and package of the TEA152x family. Power levels up to 30 W can be realized. • Accuracy: The accuracy of the complete converter, functioning as a voltage source with primary sensing, is approximately 8 % (mainly dependent on the transformer coupling). The accuracy with secondary sensing is defined by the accuracy of the external components. For safety requirements in case of optocoupler feedback loss, the primary sensing remains active when an overvoltage circuit is connected. • Efficiency: An efficiency of 75 % at maximum output power can be achieved for a complete converter designed for universal mains. • Ripple: A minimum ripple is obtained in a system designed for a maximum duty factor of 50 % under normal operating conditions, and a minimized dead time. The magnitude of the ripple in the output voltage is determined by the frequency and duty factor of the converter, the output current level and the value and ESR of the output capacitor. 8.12 Input characteristics of complete power-plug Typical characteristics: • The input voltage range comprises the universal AC mains (80 V to 276 V) |
Nº de peça semelhante - TEA1522T |
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Descrição semelhante - TEA1522T |
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