参数资料
| 型号： | ISL6324CRZ-T |
| 厂商： | Intersil |
| 文件页数： | 30/38页 |
| 文件大小： | 0K |
| 描述： | IC HYBRID CTRLR PWM DUAL 48-QFN |
| 标准包装： | 4,000 |
| 应用： | 控制器，AMD SVI |
| 输入电压： | 5 V ~ 12 V |
| 输出数： | 2 |
| 输出电压： | 最高 2V |
| 工作温度： | 0°C ~ 70°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) |
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页当前第30页第31页第32页第33页第34页第35页第36页第37页第38页
ISL6324
gain. So, the R 2 resistor for the Core inductor RC filters is
left unpopulated and K = 1.
1. Choose a capacitor value for the Core RC filter. A 0.1μF
3. Choose a capacitor value for the Core RC filter. A 0.1μF
capacitor is a recommended starting point.
4. Calculate the value for the Core resistor R 1 :
L Core
DCR Core ? C Core
capacitor is a recommended starting point.
2. Calculate the value for resistor R 1 :
R 1
Core
= ------------------------------------------------
(EQ. 43)
L Core (EQ. 36)
R 1
DCR Core ? C Core
400 DCR CORE ? K ? V IN – N ? V CORE V CORE ?
2 ? L CORE ? f S
R SET = ---------- ? --------------------------------------- ? ? I OCP + --------------------------------------------- ? -------------------- ?
?
V IN ?
= ------------------------------------------------
Core
3. Calculate the value for the R SET resistor using Equation 37:
5. Calculate the value for the R SET resistor using Equation 44:
3 N ? 100 μ A CORE
400 DCR CORE ? K ?
R SET = ---------- ? --------------------------------------- ? ? I OCP
?
V IN – N ? V CORE V CORE ?
2 ? L CORE ? f S
3
CORE
+ --------------------------------------------- ? -------------------- ?
V IN ?
Where: K = 1
6. Calculate the OCP trip point for the North Bridge
(EQ. 44)
Where: K = 1
(EQ. 37)
regulator using Equation 45. If the OCP trip point is higher
(Derived from Equation 18).
4. Using Equation 38 (also derived from Equation 18),
calculate the value of K for the North bridge regulator .
than desired, then the component values must be
recalculated utilizing Case 1. If the OCP trip point is lower
than desired, then the component values must be
recalculated utilizing Case 2.
K = ---------- ? R SET ? --------------------- ? --------------------------------------------------------------------------
DCR NB V IN – V NB V NB
I OCP
2 ? L NB ? f S V IN
= 100 μ A ? --------------------- ? ? ---------- ? R SET ? + ----------------------------- ? -----------
2 ? L NB ? f S V IN
? 400 ?
400
NB
3 1 100 μ A
+ ----------------------------- ? -----------
I OCP
NB
DCR NB
1 3 V IN – V NB V NB
(EQ. 45)
R 2
K = -------------------------------------
R 1 + R 2
(EQ. 38)
5. Choose a capacitor value for the North Bridge RC filter. A
0.1μF capacitor is a recommended starting point.
6. Calculate the values for R 1 and R 2 for North Bridge.
Equations 39 and 40 will allow for their computation.
NB (EQ. 39)
NB NB
Note: The values of R SET must be greater than 20k Ω and
less than 80k Ω . For all of the 3 cases above, if the calculated
value of R SET is less than 20k Ω , then either the OCP trip
point needs to be increased or the inductor must be changed
to an inductor with higher DCR. If the R SET resistor is
greater than 80k Ω , then a value of R SET that is less than
80k Ω must be chosen and a resistor divider across both
North Bridge and Core inductors must be set up with proper
R 1 ? R 2
--------------------- = ------------------------------------- ? C NB
DCR NB R 1 + R 2
L NB NB NB
CASE 3
NB NB
(EQ. 40)
gain. This gain will represent the variable “K” in all equations.
It is also very important that the R SET resistor be tied
between the RSET pin and the VCC pin of the ISL6323.
I Core
? DCR NB = -------------------------- ? DCR Core
I NB
MAX
MAX
N
(EQ. 41)
In Case 3, the DC voltage across the North Bridge inductor
at full load is equal to the DC voltage across a single phase
of the Core regulator while at full load. Here, the full scale
DC inductor voltages for both North Bridge and Core will be
impressed across the ISEN pins without any gain. So, the R 2
resistors for the Core and North Bridge inductor RC filters
are left unpopulated and K = 1 for both regulators.
For this Case, it is recommended that the overcurrent trip
point for the North Bridge regulator be equal to the
overcurrent trip point for the Core regulator divided by the
number of core phases.
1. Choose a capacitor value for the North Bridge RC filter. A
0.1μF capacitor is a recommended starting point.
2. Calculate the value for the North Bridge resistor R 1 :
L NB
DCR NB ? C NB
R 1
NB
= --------------------------------------
30
(EQ. 42)
FN6518.2
September 25, 2008
相关PDF资料 |
PDF描述 |
|---|---|
| LT1963AEFE-3.3#PBF | IC REG LDO 3.3V 1.5A 16TSSOP |
| HIP6004DCRZ-T | IC CTRLR PWM VOLTAGE MON 20-QFN |
| LT1963AEFE-1.8#PBF | IC REG LDO 1.8V 1.5A 16TSSOP |
| HIP6004BCRZ-T | IC CTRLR PWM VOLTAGE MON 20-QFN |
| ADP1710AUJZ-3.0-R7 | IC REG LDO 3V .15A TSOT-23-5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6324IRZ | 功能描述:IC HYBRID CTRLR PWM DUAL 48-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 |
| ISL6324IRZ-T | 功能描述:IC HYBRID CTRLR PWM DUAL 48-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 |
| ISL6326AIRZ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述: |
| ISL6326BCRZ | 功能描述:电流型 PWM 控制器 W/ANNEAL 4-PHS VR11 CNTRLR COM 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 |
| ISL6326BCRZ-T | 功能描述:电流型 PWM 控制器 W/ANNEAL 4-PHS VR11 CNTRLR COM 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 |
发布紧急采购，3分钟左右您将得到回复。