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AN2798 数据表(PDF) 31 Page - STMicroelectronics

部件名 AN2798
功能描述  Complete DDR2/3 memory power supply
PDF  38 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

AN2798 数据表(HTML) 31 Page - STMicroelectronics

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AN2798
PM6670AS evaluation tests
31/38
8.11
Switching frequency
Switching frequency vs. input voltage
The constant on-time controller leads to a quasi-constant switching frequency, slightly
following the input voltage.
Figure 34.
Switching frequency vs. input voltage, VDDQ = 1.8 V, IVDDQ = 4 A, forced PWM mode
300
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500
414
24
34
Voltage [V]
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414
24
34
Voltage [V]



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