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参数资料
| 型号： | L6713ATR |
| 厂商： | Holtek Semiconductor Inc. |
| 英文描述： | 2/3 Phase controller with embedded drivers for Intel VR10, VR11 and AMD 6 bit CPUs |
| 中文描述： | 2 / 3为英特尔VR10，VR11和AMD的嵌入式驱动器相控制器6位CPU |
| 文件页数： | 21/64页 |
| 文件大小： | 515K |
| 代理商： | L6713ATR |
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Configuring the device
L6713A
28/64
8
Configuring the device
Number of Phases and Multiple DACs need to be configured before the system starts-up by
programming the apposite pin PHASE_SEL and SS/LTBG/AMD pin.
The configuration of this pin identifies two main working areas (See Table 11) distinguishing
between compliancy with Intel VR10,VR11 or AMD 6BIT specifications. According to the
main specification considered, further customizazions can be done: main differences are
regarding the DAC table, soft-start implementation, protection management and Dynamic
VID Transitions. See Table 12 and See Table 13 for further details about the device
configuration.
8.1
Number of phases selection
L6713A allows to select between two and three phase operation simply using the
PHASE_SEL pin, as shown in the following table.
8.2
DAC Selection
L6713A embeds a selectable DAC (through SS/LTBG/AMD pin, See Table 11) that allows to
regulate the output voltage with a tolerance of ±0.5% (±0.6% for AMD DAC) recovering from
offsets and manufacturing variations. In case of selecting Intel Mode, the device
automatically introduces a -19mV (both VRD10.x and VR11) offset to the regulated voltage
in order to avoid any external offset circuitry to worsen the guaranteed accuracy and, as a
consequence, the calculated system TOB.
Note:
When selecting Intel Mode, SS/LTBG/AMD pin is used to select both Soft Start Time and
LTB Gain (see dedicated sections).
Table 10. Number of phases setting.
PHASE_SEL pin
Number of phases
Phases used
Floating
2-PHASE
Phase1, Phase3
Short to SGND
3-PHASE
Phase1, Phase2, Phase3
Table 11. DAC Settings (See Note).
SS / LTBG / AMD
Resistor(RSSOSC)
vs. SGND
DAC
Soft start time
LTBGain
OVP
UVP
0 (Short)
AMD
Not
Programmable
Fixed
(LTBGain=2)
1.800V (typ)
or
Programmable
-750mV
(typ)
> 2.4 k
Intel
Programmable
trough RSSOSC
Programmable
trough RSSOSC
(LTBGain
≤2)
VID + 175mV
(typ)
or
Programmable
-750mV
(typ)
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