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AN2829 Datasheet(PDF) 20 Page - STMicroelectronics

Part # AN2829
Description  Dual step-down controller with auxilary voltages
PDF  32 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2829 Datasheet(HTML) 20 Page - STMicroelectronics

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Test setup and performance summary
AN2829
20/32
Figure 9.
Section 1 soft-start waveforms
Figure 10.
Section 2 soft-start waveforms
Driving the EN1, EN2 pins below the EN off threshold (0.8 V), the switching outputs are
connected to ground through an internal 12
Ω P-MOSFET and are discharged gradually,
(discharge mode). When the output voltages reach 0.3 V, the low-side MOSFETs are turned
on, quickly discharging them to ground.
AM01415v1
OUT1
I_L
EN1
AM01416v1
OUT2
I_L
EN2



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