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74408943220 Scheda tecnica(PDF) 8 Page - Texas Instruments |
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74408943220 Scheda tecnica(HTML) 8 Page - Texas Instruments |
8 / 15 page 100 90 80 70 60 50 40 30 20 0 100 200 300 400 500 600 700 800 900 1000 I - Output Current - mA O TPS54120EVM Efficiency V = 10 V in V = 8 V in V =12 V in V =15 V in Test Results www.ti.com 4.5 Efficiency Figure 7 shows the efficiency for the TPS54120 at an ambient temperature of 25 °C for Vin= 8V, 10V, 12V, and 15V. The switcher output voltage is set to 4.1V and the LDO is set to 3.3V. Figure 7. TPS54120 Efficiency 4.6 Thermal Characteristic This section shows a thermal image of the TPS54120 running at 12 V input and 1A load, 3.3V LDO OUT, and 4.1V Switcher out. There is no air flow and the ambient temperature is 25 °C. The peak temperature of the IC (56.4 °C) is well below the maximum recommended operating condition listed in the data sheet of 150 °C. 8 TPS54120EVM, Low Noise 1A Power Supply Evaluation Module SLVU641 – January 2012 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated |
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