参数资料
型号: ISL6312AIRZ-T
厂商: Intersil
文件页数: 18/35页
文件大小: 0K
描述: IC CTRLR PWM 4PHASE BUCK 48-QFN
标准包装: 4,000
应用: 控制器,Intel VR10、VR11、AMD CPU
输入电压: 5 V ~ 12 V
输出数: 1
输出电压: 0.38 V ~ 1.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 48-VFQFN 裸露焊盘
供应商设备封装: 48-QFN(7x7)
包装: 带卷 (TR)
ISL6312A
TABLE 5. AMD 6-BIT VOLTAGE IDENTIFICATION
CODES (Continued)
TABLE 5. AMD 6-BIT VOLTAGE IDENTIFICATION
CODES (Continued)
VID5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
VID4
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
VID3
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
VID2
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
VID1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
VID0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
VDAC
1.4500
1.4250
1.4000
1.3750
1.3500
1.3250
1.3000
1.2750
1.2500
1.2250
1.2000
1.1750
1.1500
1.1250
1.1000
1.0750
1.0500
1.0250
1.0000
0.9750
0.9500
VID5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
VID4
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
VID3
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
VID2
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
VID1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
VID0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
VDAC
0.6250
0.6125
0.6000
0.5875
0.5750
0.5625
0.5500
0.5375
0.5250
0.5125
0.5000
0.4875
0.4750
0.4625
0.4500
0.4375
0.4250
0.4125
0.4000
0.3875
0.3750
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0.9250
0.9000
0.8750
0.8500
0.8250
0.8000
0.7750
0.7625
0.7500
0.7375
0.7250
0.7125
0.7000
Voltage Regulation
The integrating compensation network shown in Figure 6
insures that the steady-state error in the output voltage is
limited only to the error in the reference voltage (output of
the DAC) and offset errors in the OFS current source,
remote-sense and error amplifiers. Intersil specifies the
guaranteed tolerance of the ISL6312A to include the
combined tolerances of each of these elements.
The output of the error amplifier, V COMP , is compared to the
triangle waveform to generate the PWM signals. The PWM
signals control the timing of the Internal MOSFET drivers
and regulate the converter output so that the voltage at FB is
equal to the voltage at REF. This will regulate the output
voltage to be equal to Equation 8. The internal and external
circuitry that controls voltage regulation is illustrated in
Figure 6.
1
1
0
0
0
0
1
1
1
1
0
1
0.6875
0.6750
V OUT = V REF – V OFS – V DROOP
(EQ. 8)
1
1
1
0
0
0
1
1
1
0
0
0
0
0
1
0
1
0
0.6625
0.6500
0.6375
The ISL6312A incorporates an internal differential remote-
sense amplifier in the feedback path. The amplifier removes
the voltage error encountered when measuring the output
voltage relative to the controller ground reference point
18
FN9290.5
February 1, 2011
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