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L6986H Datasheet(PDF) 44 Page - STMicroelectronics

Part # L6986H
Description  38 V, 2 A synchronous step-down switching regulator with 30 μA quiescent current
PDF  68 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6986H Datasheet(HTML) 44 Page - STMicroelectronics

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Figure 45. Input RMS current
0
0.2
0.4
0.6
0.8
1
0
0.1
0.2
0.3
0.4
0.5
two regulators operating in phase
two regulators operating out of phase
Duty cycle
Figure 46. Two regulators not synchronized shows two not synchronized regulators with unconnected SYNCH
pin.
Figure 46. Two regulators not synchronized
Figure 47. Two regulators synchronized shows the same regulators working synchronized having the SYNCH
pins connected. The MASTER regulator (LX_reg2 trace) delivers the synchronization signal to the SLAVE device
(LX_reg1). The SLAVE regulator works in phase with the synchronization signal, which is out of phase with the
MASTER switching operation.
L6986H
Synchronization (LNM)
DS12905 - Rev 2
page 44/68



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