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参数资料
| 型号： | L6710 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 2 A SWITCHING CONTROLLER, PQFP44 |
| 封装： | 10 X 10 MM, 1 MM HEIGHT, TQFP-44 |
| 文件页数： | 6/34页 |
| 文件大小： | 1610K |
| 代理商： | L6710 |
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L6710
14/34
output voltage reaches the under-voltage threshold (VoutMIN). When this threshold is crossed, all mosfets
are turned off, the FAULT pin is driven high and the device stops working. Cycle the power supply to re-
start operation.
The maximum average current during the Constant-Current behavior results:
In this particular situation, the switching frequency results reduced. The ON time is the maximum allowed
(TonMAX) while the OFF time depends on the application:
Over current is set anyway when IINFOx reaches 35
A (IFB=70A).
The full load value is only a convention to work with convenient values for IFB. Since the OCP intervention
threshold is fixed, to modify the percentage with respect to the load value, it can be simply considered that,
for example, to have on OCP threshold of 200%, this will correspond to IINFOx = 35
A (IFB = 70A). The
full load current will then correspond to IINFOx = 17.5
A (IFB = 35A).
Figure 5. Constant Current operation
INTEGRATED DROOP FUNCTION
The device uses a droop function to satisfy the requirements of high performance microprocessors, re-
ducing the size and the cost of the output capacitor.
This method "recovers" part of the drop due to the output capacitor ESR in the load transient, introducing
a dependence of the output voltage on the load current: the regulated voltage decrease as the load in-
crease with a precise relationship.
As shown in figure 6, the ESR drop is present in any case, but using the droop function the total deviation
of the output voltage is minimized. A static error (VDROOP in figure 6) at zero load is simply introduced by
a resistor between FB and GND allowing to exploit the all tolerance interval available. This additional re-
sistor is not required in application such as VRD10 since the nominal value is already set by the VID* and
the load regulation fixed by the specs.
Since the device has an average current mode regulation, the information about the total current delivered
I
MA X,TOT
2I
MA X
2I
OCPx
I peak
I
OCPx
–
2
--------------------------------------
+
=
=
T
OFF
L
I peak
I
OCPx
–
V
OU t
--------------------------------------
f
1
T
ONm ax
T
OFF
+
-----------------------------------------
=
=
TonMAX
IOCPx
Ipeak
IMAX
Vout
Iout
(IFB=50
A)
2IOCPx (IFB=70
A)
IMAX,TOT
UVP
Droop effect
a) Maximum current for each phase
b) Output Characteristic
相关PDF资料 |
PDF描述 |
|---|---|
| L6710TR | 2 A SWITCHING CONTROLLER, PQFP44 |
| L6713ATR | 2 A SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, PQFP64 |
| L6716TR | DUAL SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, QCC48 |
| L6716 | DUAL SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, QCC48 |
| L6722 | SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, QCC36 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| L6710TR | 功能描述:功率驱动器IC 6-Bit Dual Ph Contlr RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| L6711 | 功能描述:DC/DC 开关控制器 3 PHASE CONTROLLER RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6711_06 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:3 Phase controller with dynamic VID and selectable DACs |
| L6711TR | 功能描述:DC/DC 开关控制器 3 PHASE CONTROLLER RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6712 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER |
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