参数资料
| 型号： | ISL6264CRZ |
| 厂商： | Intersil |
| 文件页数： | 22/23页 |
| 文件大小： | 0K |
| 描述： | IC CORE CTRLR TWO-PHASE 40-QFN |
| 标准包装： | 50 |
| 应用： | 控制器，AMD 移动式 Turion? |
| 输入电压： | 5 V ~ 24 V |
| 输出数： | 1 |
| 输出电压： | 0.38 V ~ 1.55 V |
| 工作温度： | -10°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-VFQFN 裸露焊盘 |
| 供应商设备封装： | 40-QFN（6x6） |
| 包装： | 管件 |
ISL6264
In the above example, the two errors add to 4A. For the two
phase DC/DC, the currents would be 22A in one phase and
18A in the other phase. In the above analysis, the current
balance can be calculated with 2A/20A = 10%. This is the
worst case calculation, for example, the actual tolerance of
two 10% DCRs is 10%*sqrt(2) = 7%.
Fault Protection - Overcurrent Fault Setting
As previously described, the Overcurrent protection of the
ISL6264 is related to the Droop voltage. Previously we have
calculated that the Droop Voltage = ILoad * R droop , where
R droop is the load line slope specified as 2mV/A in the AMD
specification. Knowing this relationship, the over current
protection threshold can be set up as a voltage Droop level.
Knowing this voltage droop level, one can program in the
appropriate drop across the R oc resistor. This voltage drop
will be referred to as V oc . Once the droop voltage is greater
than V oc , the PWM drives will turn off and PGOOD will go
low.
The selection of R oc is given in Equation 21. Assuming we
desire an overcurrent trip level (Ioc) of 55A, and knowing
from the Intel Specification that the load line slope (R droop ) is
0.0021 (V/A), we can then calculate for R oc as shown in
Equation 21.
I OC ? R droop 55 ? 0.002
R OC = = = 11.5k Ω
10 μ A
10 ? 10
---------------------------------- --------------------------
– 6
(EQ. 21)
Note, if the droop load line slope is not -0.002 (V/A) in the
application, the over current setpoint will differ from
predicted.
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22
FN6359.3
May 28, 2009
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6264CRZ-T | 功能描述:IC CORE CTRLR TWO-PHASE 40-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 |
| ISL6265 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Multi-Output Controller with Integrated MOSFET Drivers for AMD SVI Capable |
| ISL6265A | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Multi-Output Controller with Integrated MOSFET Drivers for AMD SVI Capable Mobile CPUs |
| ISL6265AHRTZ | 功能描述:电流型 PWM 控制器 MULTI-OUTPUT CNTRLRS PHS W/EMBEDDED GATE 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 |
| ISL6265AHRTZ-T | 功能描述:电流型 PWM 控制器 MULTI-OUTPUT CNTRLRS PHS W/EMBEDDED GATE 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 |
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