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参数资料
| 型号： | L6919CD |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封装： | SO-28 |
| 文件页数： | 9/32页 |
| 文件大小： | 558K |
| 代理商： | L6919CD |
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L6919C
plication of the load the inductor is charged by a voltage equal to the difference between the input and the output
voltage, during the removal it is discharged only by the output voltage. The following expressions give approx-
imate response time for
I load transient in case of enough fast compensation network response:
The worst condition depends on the input voltage available and the output voltage selected. Anyway the worst
case is the response time after removal of the load with the minimum output voltage programmed and the max-
imum input voltage available.
Figure 11. Inductor ripple current vs VOUT
MAIN CONTROL LOOP
The control loop is composed by the Current Sharing control loop and the Average Current Mode control loop.
Each loop gives, with a proper gain, the correction to the PWM in order to minimize the error in its regulation:
the Current Sharing control loop equalize the currents in the inductors while the Average Current Mode control
loop fixes the output voltage equal to the reference programmed by VID. Figure 12 reports the block diagram of
the main control loop.
Figure 12. Main Control Loop Diagram
t
a pplic atio n
LI
V
IN
V
OUT
–
------------------------------
=
t
rem ov al
LI
V
OUT
---------------
=
0
1
2
3
4
5
6
7
8
9
0.5
1.5
2.5
3.5
Output Voltage [V]
In
du
ct
or
R
ip
p
le
[A
]
L=3
H,
Vin=12V
L=2
H,
Vin=12V
L=1.5
H, Vin=12V
L=2
H,
Vin=5V
L=1.5
H,
Vin=5V
L=3
H, Vin=5V
L1
L2
+
PWM1
1/5
+
-
1/5
IINFO2
IINFO1
4/5
ZF(S)
PWM2
CO
FB
COMP
RO
ERROR
AMPLIFIER
REFERENCE
PROGRAMMED
BY VID
CURRENT
SHARING
DUTY CYCLE
CORRECTION
RFB
D02IN1392
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相关代理商/技术参数 |
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|---|---|
| L6919CDTR | 功能描述:DC/DC 开关控制器 Prog Dual-Phase Cont 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 |
| L6919E | 功能描述:DC/DC 开关控制器 5-Bit Dual Ph Contlr 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 |
| L6919ETR | 功能描述:DC/DC 开关控制器 5-Bit Dual Ph Contlr 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 |
| L-692 | 制造商:RHOMBUS-IND 制造商全称:Rhombus Industries Inc. 功能描述:Common Mode Inductor |
| L6920 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:1V HIGH EFFICIENCY SYNCRONOUS STEP UP CONVERTER |
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