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AN2833 Datasheet(PDF) 23 Page - STMicroelectronics

Part # AN2833
Description  Dual step-down controller with auxiliary voltages for industrial system power
PDF  32 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2833 Datasheet(HTML) 23 Page - STMicroelectronics

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AN2833
Test setup and performance summary
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Figure 15 shows the input current consumption measured at VIN+ (includes ISHDN) and the
input device current consumption measured by the VCC pin. Both switching sections are
working in forced PWM mode. No load is applied on the outputs.
Figure 15.
Input current vs. input voltage in PWM mode
Figure 16 shows the input current consumption measured at VIN+, with both switching
sections working in pulse-skip mode. No load is applied on the outputs.
Figure 16.
Input current vs. input voltage in skip mode
Figure 17 shows the input current consumption measured at VIN+, with both switching
sections working in non-audible skip mode. No load is applied on the outputs.



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