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L6751CTR Datasheet(PDF) 9 Page - STMicroelectronics

Part # L6751CTR
Description  Digitally controlled dual PWM for Intel VR12 and AMD SVI
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6751CTR Datasheet(HTML) 9 Page - STMicroelectronics

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DocID025037 Rev 1
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L6751C
Pin description and connection diagrams
57
A4
CS6N
A
Channel 6 current sense negative input. Connect through an Rg resistor to the
output-side of the channel inductor. When working at < 6 phases, still connect
through Rg to CS6P and then to the regulated voltage. Filter the output-side of
Rg with 100 nF (typ.) to GND.
B4
CS6P
A
Channel 6 current sense positive input. Connect through an R-C filter to the
phase-side of the channel 6 inductor. When working at < 6 phases, short to
the regulated voltage.
A5
CS5P
A
Channel 5 current sense positive input. Connect through an R-C filter to the
phase-side of the channel 5 inductor. When working at < 5 phases, short to
the regulated voltage.
B5
CS5N
A
Channel 5 current sense negative input. Connect through an Rg resistor to the
output-side of the channel inductor. When working at < 5 phases, still connect
through Rg to CS5P and then to the regulated voltage. Filter the output-side of
Rg with 100 nF (typ.) to GND.
A6
CS4N
A
Channel 4 current sense negative input. Connect through an Rg resistor to the
output-side of the channel inductor. When working at < 4 phases, still connect
through Rg to CS4P and then to the regulated voltage. Filter the output-side of
Rg with 100 nF (typ.) to GND.
B6
CS4P
A
Channel 4 current sense positive input. Connect through an R-C filter to the
phase-side of the channel 4 inductor. When working at < 4 phases, short to
the regulated voltage.
A7
CS3P
A
Channel 3 current sense positive input. Connect through an R-C filter to the
phase-side of the channel 3 inductor. When working at < 3 phases, short to
the regulated voltage.
B7
CS3N
A
Channel 3 current sense negative input. Connect through an Rg resistor to the
output-side of the channel inductor. When working at < 3 phases, still connect
through Rg to CS3P and then to the regulated voltage. Filter the output-side of
Rg with 100 nF (typ.) to GND.
A8
CS2N
A
Channel 2 current sense 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.
B8
CS2P
A
Channel 2 current sense positive input. Connect through an R-C filter to the
phase-side of the channel 2 inductor.
A9
CS1P
A
Channel 1 current sense positive input. Connect through an R-C filter to the
phase-side of the channel 1 inductor.
D2
CS1N
A
Channel 1 current sense 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.
A10
SOSC
A
Oscillator pin.
It allows the switching frequency FSSW to be programmed for the single-phase
section. The pin is internally set to 1.02 V, frequency for single-phase is
programmed according to the resistor connected to GND or VCC with a gain
of 11.5 kHz/µA. Leaving the pin floating programs a switching frequency of
230 kHz. See Section 10 on page 44 for details.
Table 2. Pin description (continued)
Pin no.
Name
Type
Function


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