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参数资料
| 型号： | ISL6314CRZ |
| 厂商： | Intersil |
| 文件页数： | 17/32页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM 1PHASE BUCK 32-QFN |
| 产品培训模块： | Solutions for Industrial Control Applications |
| 标准包装： | 60 |
| 应用： | 控制器，Intel 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： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN 裸露焊盘（5x5） |
| 包装： | 管件 |
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ISL6314
.
V DROOP = --------------------- ? I OUT ? DCR
R COMP
R S
(EQ. 7)
VDIFF
By simply adjusting the value of R S , the load line can be set
to any level, giving the converter the right amount of droop at
all load currents. It may also be necessary to compensate for
+
V OFS
-
R FB
VREF
E/A
any changes in DCR due to temperature. These changes
cause the load line to be skewed, and cause the R-C time
constant to not match the L/DCR time constant. If this
becomes a problem a simple negative temperature
coefficient resistor network can be used in the place of
R COMP to compensate for the rise in DCR due to
temperature.
FB
I OFS
Note: An optional 10nF ceramic capacitor from the ISEN+
-
1.6V
pin to the ISEN- pin is recommended to help reduce any
+
+
noise affects on the current sense amplifier due to layout
Output-Voltage Offset Programming
The ISL6314 allows the designer to accurately adjust the
R OFS
OFS
GND
ISL6314
-
GND
0.3V
VCC
offset voltage by connecting a resistor, R OFS , from the OFS
pin to VCC or GND. When R OFS is connected between OFS
and VCC, the voltage across it is regulated to 1.6V. This
causes a proportional current (I OFS ) to flow into the OFS pin
and out of the FB pin, providing a negative offset. If R OFS is
connected to ground, the voltage across it is regulated to
0.3V, and I OFS flows into the FB pin and out of the OFS pin,
FIGURE 6. POSITIVE OFFSET OUTPUT VOLTAGE
PROGRAMMING
VDIFF
-
providing a positive offset. The offset current flowing through
the resistor between VDIFF and FB will generate the desired
V OFS
+
R FB
VREF
E/A
offset voltage which is equal to the product (I OFS x R FB ).
These functions are shown in Figures 6 and 7.
Once the desired output offset voltage has been determined,
use the following formulas in Equations 8 and 9 to set R OFS :
For Negative Offset (connect R OFS to VCC):
I OFS
FB
R OFS = --------------------------
R OFS = --------------------------
1.6 ? R FB
V OFFSET
For Positive Offset (connect R OFS to GND):
0.3 ? R FB
V OFFSET
(EQ. 8)
(EQ. 9)
VCC
R OFS
OFS
ISL6314
+
-
0.3V
-
+
1.6V
GND
FIGURE 7. NEGATIVE OFFSET OUTPUT VOLTAGE
PROGRAMMING
VCC
17
FN6455.2
October 8, 2009
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6314CRZ-T | 功能描述:IC CTRLR PWM 1PHASE BUCK 32-QFN 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 |
| ISL6314CRZ-TR5453 | 制造商:Intersil Corporation 功能描述:STD. ISL6314CRZ-T W/GOLD BOND WIRE ONLY T&R - Tape and Reel |
| ISL6314CRZ-TS2568 | 制造商:Intersil Corporation 功能描述:- Tape and Reel |
| ISL6314IRZ | 功能描述:IC CTRLR PWM 1PHASE BUCK 32-QFN 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 |
| ISL6314IRZ-T | 功能描述:IC CTRLR PWM 1PHASE BUCK 32-QFN 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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