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TSM1014AIST Datasheet(PDF) 7 Page - STMicroelectronics |
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TSM1014AIST Datasheet(HTML) 7 Page - STMicroelectronics |
7 / 10 page Principles of Operation and Application Tips TSM1014 7/10 5.5 Voltage clamp The following schematic shows how to realize a low-cost power supply for the TSM1014 (with no additional windings).Please pay attention to the fact that in the particular case presented here, this low- cost power supply can reach voltages as high as twice the voltage of the regulated line. Since the Absolute Maximum Rating of the TSM1014 supply voltage is 28V. In the aim to protect he TSM1014 against such how voltage values a internal zener clamp is integrated. Figure 4: Clamp voltage Figure 5: Voltage controller and over current detection schematic R limit V cc V z – () I vz ⋅ = Vz 28V Vcc Rlimit Vcc Ivz TSM1014 D R2 R1 Rsense Rvc1 22K Cvc1 2.2nF Ric1 22K CV To primary OUT+ OUT- + Cic1 2.2nF IL Ric2 1K R5 10K R4 100K R3 1k IL Vsense + OCP R6 1K 28V Vcc Cv- CV Out Gnd Cc- Cc+ Vref 1 4 5 3 7 CV CC CC Out |
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