- 您现在的位置：买卖IC网 > PDF目录69003 > L6710 (STMICROELECTRONICS) 2 A SWITCHING CONTROLLER, PQFP44 PDF资料下载
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： | 5/34页 |
| 文件大小： | 1610K |
| 代理商： | L6710 |
第1页第2页第3页第4页当前第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页第30页第31页第32页第33页第34页
13/34
L6710
1.
TON LIMITED OUTPUT VOLTAGE.
This happens when the maximum ON time is reached before the current in each phase reaches IOCPx
(IINFOx<35 A).
Figure 4a shows the maximum output voltage that the device is able to regulate considering the TON lim-
itation imposed by the previous relationship. If the desired output characteristic crosses the TON limited
maximum output voltage, the output resulting voltage will start to drop after crossing. In this case, the de-
vice doesn't perform constant current limitation but only limits the maximum ON time following the previous
relationship. The output voltage follows the resulting characteristic (dotted in Figure 4b) until UVP is de-
tected or anyway until IFB = 70
A
Figure 4. TON Limited Operation
2.
CONSTANT CURRENT OPERATION
This happens when ON time limitation is reached after the current in each phase reaches IOCPx (IINFOx
>35
A).
The device enters in Quasi-Constant-Current operation: the low-side mosfets stays ON until the current
read becomes lower than IOCPx (IINFOx < 35
A) skipping clock cycles. The high side mosfets can be turned
ON with a TON imposed by the control loop at the next available clock cycle and the device works in the
usual way until another OCP event is detected.
This means that the average current delivered can slightly increase also in Over Current condition since
the current ripple increases. In fact, the ON time increases due to the OFF time rise because of the current
has to reach the IOCPx bottom. The worst-case condition is when the ON time reaches its maximum value.
When this happens, the device works in Constant Current and the output voltage decrease as the load
increase. Crossing the UVP threshold causes the device to latch (FAULT pin is driven high).
Figure 5 shows this working condition.
It can be observed that the peak current (Ipeak) is greater than the IOCPx but it can be determined as
follow:
Where VoutMIN is the minimum output voltage (VID-40% as follow).
The device works in Constant-Current, and the output voltage decreases as the load increase, until the
0.80VIN
0.40VIN
VOUT
IOUT
IOCP=2IOCPx
(IFB=70
A)
TON Limited Output
characteristic
0.80VIN
0.40VIN
VOUT
IOUT
IOCP=2IOCPx
(IFB=70
A)
Desired Output
characteristic and
UVP threshold
Resulting Output
characteristic
a) Maximum output Voltage
b) TON Limited Output Voltage
I
pea k
I
OCPx
V
IN
V out
mi n
–
L
------------------------------------- Ton
MAX
I
OCPx
V
IN
Vou t
MIN
–
L
-------------------------------------- 0.40 T
+
=
+
=
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 |
发布紧急采购，3分钟左右您将得到回复。