参数资料
| 型号： | ISL6353CRTZ-T |
| 厂商： | Intersil |
| 文件页数： | 18/30页 |
| 文件大小： | 0K |
| 描述： | IC CONTROLLER DDR VR12 40TQFN |
| 标准包装： | 6,000 |
| 应用： | 控制器，DDR，Intel VR12 |
| 输入电压： | 4.5 V ~ 25 V |
| 输出数： | 1 |
| 输出电压： | 0.25 V ~ 1.52 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页当前第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页
ISL6353
TABLE 2. VID TABLE (Continued)
OFS7
OFS6
OFS5
OFS4
OFS3
OFS2
OFS1
OFS0
Hex
V OFS
(V)
0
1
0
1
1
1
1
1
5 F
0.475
VCC SENSE
0
1
1
0
0
0
0
0
6 0
0.480
FB
VR LOCAL
0
0
1
1
1
1
0
0
0
0
0
0
0
1
1
0
6 1
6 2
0.485
0.490
“CATCH ”
RESISTOR
VO
0
0
0
1
1
1
1
1
1
0
0
0
0
0
0
0
1
1
1
0
0
1
0
1
6 3
6 4
6 5
0.495
0.500
0.505
COMP
E/A
INTERNAL TO IC
Σ
VDAC
DAC
X1
RTN
VSS
VSS SENSE
0
1
1
0
0
1
1
0
6 6
0.510
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0
0
0
0
1
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
6 7
6 8
6 9
6 A
6 B
6 C
6 D
0.515
0.520
0.525
0.530
0.535
0.540
0.545
“CATCH ”
RESISTOR
FIGURE 9. DIFFERENTIAL SENSING
Figure 9 shows the differential voltage sensing scheme. VCC SENSE
and VSS SENSE are the remote voltage sensing signals from the DDR
memory. A unity gain differential amplifier senses the VSS SENSE
voltage and adds it to the DAC output. The error amplifier regulates
the inverting and the non-inverting input voltages to be equal as
shown in Equation 1:
0
0
0
1
1
1
1
1
1
0
0
1
1
1
0
1
1
0
1
1
0
0
1
0
6 E
6 F
7 0
0.550
0.555
0.560
VCC SENSE = V DAC + VSS SENSE
Rewriting Equation 1 gives Equation 2:
VCC SENSE – VSS SENSE = V DAC
(EQ. 1)
(EQ. 2)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
7 1
7 2
7 3
7 4
7 5
7 6
7 7
7 8
7 9
7 A
7 B
7 C
7 D
7 E
7 F
0.565
0.570
0.575
0.580
0.585
0.590
0.595
0.600
0.605
0.610
0.615
0.620
0.625
0.630
0.635
The VCC SENSE and VSS SENSE signals are routed from the
memory socket. In most cases the remote sensing location will
be on the PCB right next to one of the DDR memory sockets. If a
remote sensing location is used on a module that passes through
a socket then the feedback signals will be open circuit in the
absence of the module. As shown in Figure 9, a “catch” resistor
should be added in this case to feed the local VR output voltage
back to the compensator, and another “catch” resistor should be
added to connect the local VR output ground to the RTN pin.
These resistors, typically 10 Ω ~100 Ω , will provide voltage
feedback if the system is powered up without any memory cards
installed.
Inductor DCR Current-Sensing Network
The ISL6353 can sense the inductor current through the intrinsic DC
Resistance (DCR) of the inductors or through precision resistors in
series with the inductors. With both current-sensing methods, the
voltage across capacitor C n represents the total inductor current
from all phases. An amplifier converts the C n voltage, V Cn , into an
internal current source, I sense , with the gain set by resistor R i shown
in Equation 3.
I sense = ---------
18
V Cn
R i
(EQ. 3)
September 15, 2011
FN6897.0
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6353CRTZ-TS2568 | 制造商:Intersil Corporation 功能描述:INTEL, ISL6353CRTZ-T W/BARCODE LABELS, 12 MONTH D/C RESTRICT - Tape and Reel |
| ISL6353CRZ | 制造商:Intersil 功能描述:Multiphase PWM Regulator for VR12 DDR Memory Systems |
| ISL6353IRTZ | 功能描述:电流型 PWM 控制器 VR12 MEMORY CNTRLR 3 PHS 2 INT 5V DRVRS RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| ISL6353IRTZ-T | 功能描述:电流型 PWM 控制器 VR12 MEMORY CNTRLR 3 PHS 2 INT 5V DRVRS RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| ISL6363CRTZ | 功能描述:IC CONTROLLER VR12 48TQFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 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:管件 |
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