參數(shù)資料
型號： ISL6310
廠商： Intersil Corporation
英文描述： Two-Phase Buck PWM Controller with High Current Intergrated MOSFET Driver
中文描述： 兩相降壓PWM控制器，帶有高電流集成MOSFET驅(qū)動器
文件頁數(shù)： 13/27頁
文件大?。?/td> 711K
代理商： ISL6310
13
FN9209.2
October 19, 2005
If the R-C network components are selected such that the
R-C time constant matches the inductor L/DCR time
constant, then V
DROOP
is equal to the sum of the voltage
drops across the individual DCRs, multiplied by a gain. As
Equation 8 shows, V
DROOP
is therefore proportional to the
total output current, I
OUT
.
R
R
S
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
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.
Output Voltage Offset Programming
The ISL6310 allows the designer to accurately adjust the
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 1.5V. This
causes a proportional current (I
OFS
) to flow into the OFS pin
and out of the FB pin. If R
OFS
is connected to ground, the
voltage across it is regulated to 0.5V, and I
OFS
flows into the
FB pin and out of the OFS pin. The offset current flowing
through the resistor between VDIFF and FB will generate the
desired offset voltage which is equal to the product (I
OFS
x
R
1
). These functions are shown in Figures 8 and 9.
Once the desired output offset voltage has been determined,
use the following formulas to set R
OFS
:
For Positive Offset (connect R
OFS
to GND):
0.5 R
V
OFFSET
For Negative Offset (connect R
OFS
to VCC):
1.5 R
OFFSET
V
DROOP
--------------------
I
OUT
DCR
=
(EQ. 8)
FIGURE 7. DCR SENSING CONFIGURATION
-
+
ICOMP
DCR
L
INDUCTOR
IL
1
V
OUT
C
OUT
-
+V
L
(s)
DCR
L
INDUCTOR
IL
2
PHASE1
PHASE2
R
S
R
S
R
COMP
C
COMP
ISUM
IREF
ISL6310
-
+
V
DROOP
I
OUT
DROOP
C
SUM
(Optional)
(EQ. 9)
R
OFS
--------------------------
=
(EQ. 10)
R
OFS
--------------------------
=
E/A
FB
OFS
VCC
GND
+
-
+
-
0.5V
1.5V
GND
R
OFS
R
1
VDIFF
ISL6310
FIGURE 8. POSITIVE OFFSET OUTPUT VOLTAGE
PROGRAMMING
VREF
V
OFS
-
+
I
OFS
E/A
FB
OFS
VCC
GND
+
-
+
-
0.5V
1.5V
VCC
R
OFS
R
1
VDIFF
ISL6310
VREF
V
OFS
+
-
I
OFS
FIGURE 9. NEGATIVE OFFSET OUTPUT VOLTAGE
PROGRAMMING
ISL6310
相關(guān)PDF資料
PDF描述
ISL6310CRZ Two-Phase Buck PWM Controller with High Current Intergrated MOSFET Driver
ISL6310EVAL1 Two-Phase Buck PWM Controller with High Current Intergrated MOSFET Driver
ISL6310IRZ Two-Phase Buck PWM Controller with High Current Intergrated MOSFET Driver
ISL6431A Advanced Pulse Width Modulation (PWM) Controller for Broadband Applications
ISL6431ACB Advanced Pulse Width Modulation (PWM) Controller for Broadband Applications
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISL6310CRZ 功能描述:電壓模式 PWM 控制器 W/ANNEAL 2-PH PWM CNTRLR W/2-DRVRS RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
ISL6310CRZ-T 功能描述:電壓模式 PWM 控制器 W/ANNEAL 2-PH PWM CNTRLR W/2-DRVRS RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
ISL6310EVAL1Z 功能描述:EVALUATION BOARD FOR ISL6310 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - DC/DC 與 AC/DC（離線）SMPS 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):升壓 頻率 - 開關(guān):3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969
ISL6310IRZ 功能描述:電壓模式 PWM 控制器 W/ANNEAL 2-PH PWM CNTROL W/2-DRVRS RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
ISL6310IRZ-T 功能描述:電壓模式 PWM 控制器 W/ANNEAL 2-PH PWM CNTROL W/2-DRVRS RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*