参数资料
| 型号： | ISL6324ACRZ-T |
| 厂商： | Intersil |
| 文件页数： | 32/40页 |
| 文件大小： | 0K |
| 描述： | IC HYBRID CTRLR PWM DUAL 48QFN |
| 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) |
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ISL6324A
the R 2 resistor for the North Bridge inductor RC filter is left
unpopulated and K = 1.
3. Calculate the value for the R SET resistor using
Equation 37:(Derived from Equation 18).
400 DCR CORE ? K ?
R SET = ---------- ? --------------------------------------- ? ? I OCP
?
V IN – V CORE V CORE ?
2 ? L CORE ? f S
3. Choose a capacitor value for the North Bridge RC filter. A
0.1μF capacitor is a recommended starting point.
4. Calculate the value for resistor R 1 using Equation 30:
3
Where: K = 1
CORE
+ ------------------------------------- ? -------------------- ?
V IN ?
(EQ. 37)
L NB
DCR NB ? C NB
R 1
NB
= --------------------------------------
(EQ. 30)
4. Using Equation 38 (also derived from Equation 18),
calculate the value of K for the North bridge regulator.
400 DCR NB ? K ? V IN – V NB V NB ?
R SET = ---------- ? ------------------------------ ? ? I OCP + ----------------------------- ? ----------- ?
? 2 ? L NB ? f S V IN ?
K = ---------- ? R SET ? --------------------- ? --------------------------------------------------------------------------
DCR NB V IN – V NB V NB
I OCP
2 ? L NB ? f S V IN
5. Calculate the value for the R SET resistor using
Equation 31: (Derived from Equation 18).
3 NB
400
NB
3 1 100 μ A
+ ----------------------------- ? -----------
(EQ. 38)
Where: K = 1
(EQ. 31)
5. Choose a capacitor value for the North Bridge RC filter. A
K = ---------- ? R SET ? ------------------------------ ? -----------------------------------------------------------------------------------------------------------
DCR CORE V IN – N ? V CORE V CORE
I OCP
2 ? L CORE ? f S
R 2
K = -------------------------------------
R 1 + R 2
R 1 ? R 2
--------------------- = ------------------------------------- ? C NB
DCR NB R 1 + R 2
6. Using Equation 32 (also derived from Equation 18),
calculate the value of K for the Core regulator.
3 N 100 μ A
400
+ --------------------------------------------- ? --------------------
CORE V IN
(EQ. 32)
7. Choose a capacitor value for the Core RC filters. A 0.1μF
capacitor is a recommended starting point.
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
L NB NB NB (EQ. 40)
NB NB
R 2
K = ----------------------------------------------
R 1 + R 2
I NB
I Core
? DCR NB = -------------------------- ? DCR Core
8. Calculate the values for R 1 and R 2 for Core.
Equations 33 and 34 will allow for their computation.
Core (EQ. 33)
Core Core
CASE 3
MAX
MAX
N
(EQ. 41)
R 1 ? R 2
-------------------------- = ---------------------------------------------- ? C Core
DCR Core R 1 + R 2
L Core Core Core
CASE 2
Core Core
(EQ. 34)
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
I Core
? DCR NB > -------------------------- ? DCR Core
I NB
MAX
MAX
N
(EQ. 35)
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
In Case 2, the DC voltage across the North Bridge inductor
at full load is greater than the DC voltage across a single
phase of the Core regulator while at full load. Here, the DC
voltage across the North Bridge inductor must be scaled
down to match the DC voltage across the Core inductors,
which will be impressed across the ISEN pins without any
gain. So, the R 2 resistor for the Core inductor RC filters is
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
left unpopulated and K = 1.
1. Choose a capacitor value for the Core RC filter. A 0.1μF
R 1
NB
= --------------------------------------
(EQ. 42)
capacitor is a recommended starting point.
2. Calculate the value for resistor R 1 :
3. Choose a capacitor value for the Core RC filter. A 0.1μF
capacitor is a recommended starting point.
L Core
DCR Core ? C Core
L Core
R 1
DCR Core ? C Core
R 1
Core
= ------------------------------------------------
(EQ. 36)
4. Calculate the value for the Core resistor R 1 :
= ------------------------------------------------
Core
(EQ. 43)
32
FN6880.2
May 14, 2010
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6324ACRZ-TR5381 | 制造商:Intersil Corporation 功能描述:4+1 PHASE CONT., CORE + NORTHBRIDGE, PROG PSI, 3.4MHZ SVI, 5 - Tape and Reel 制造商:Intersil Corporation 功能描述:IC HYBRID CTRLR PWM DUAL 48QFN |
| ISL6324AIRZ | 功能描述:IC HYBRID CTRLR PWM DUAL 48QFN 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 |
| ISL6324AIRZR5381 | 制造商:Intersil Corporation 功能描述:4+1 PHASE CONTROLLER, CORE + NORTHBRIDGE, PROG PSI, 3.4MHZ S - Rail/Tube 制造商:Intersil Corporation 功能描述:IC HYBRID CTRLR PWM DUAL 48QFN |
| ISL6324AIRZ-T | 功能描述:IC HYBRID CTRLR PWM DUAL 48QFN 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 |
| ISL6324AIRZ-TR5381 | 制造商:Intersil Corporation 功能描述:4+1 PHASE CONTROLLER, CORE + NORTHBRIDGE, PROG PSI, 3.4MHZ S - Tape and Reel 制造商:Intersil Corporation 功能描述:IC HYBRID CTRLR PWM DUAL 48QFN |
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