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L6751B Datasheet(PDF) 11 Page - STMicroelectronics

Part # L6751B
Description  Digitally controlled dual PWM for Intel VR12 and AMD SVI
PDF  58 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6751B Datasheet(HTML) 11 Page - STMicroelectronics

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L6751B
Pin description and connection diagram
Doc ID 024028 Rev 1
11/58
27
SCSP
A
Single-phase section current senses positive input.
Connect through an R-C filter to the phase-side of the channel 1 inductor.
28
SCSN
A
Single-phase section current senses negative input.
Connect through an Rg resistor to the output-side of the channel inductor.
Filter the output-side of Rg with 100 nF (typ.) to GND.
29
SIMON
A
Current monitor output.
A current proportional to the single-phase current is sourced from this pin.
Connect through a resistor RSIMON to GND.
When the pin voltage reaches 1.55 V, overcurrent protection is set and the
IC latches. Filtering through CSIMON to GND allows the delay for OC
intervention to be controlled.
30
DPM4-6
A
Connect a resistor divider to GND/VCC5 in order to define the DPM and
GDC strategies. See Table 11 and Table 12 for details.
31
SRGND
A
Remote buffer ground sense.
Connect to the negative side of the single-phase load to perform remote
sense.
32
DPM1-3
A
Connect a resistor divider to GND/VCC5 in order to define the DPM and
GDC strategies. See Table 11 and Table 12 for details.
33
SFBR
A
Remote buffer positive sense.
Connect to the positive side of the single-phase load to perform remote
sense.
34
SVSEN
A
Remote buffer output.
Output voltage monitor, manages OV and UV protection.
Connect with a resistor RSFB // (RSI - CSI) to SFB.
35
SFB
A
Error amplifier inverting input.
Connect with a resistor RSFB // (RSI - CSI) to SVSEN and with an (RSF -
CSF)// CSH to SCOMP.
36
SCOMP
A
Error amplifier output.
Connect with an (RSF - CSF)// CSH to SFB. The device cannot be disabled
by pulling low this pin.
Table 2.
Pin description (continued)
Pin#
Name
Type
Function



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