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参数资料
| 型号： | L6711TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 2 A SWITCHING CONTROLLER, 178 kHz SWITCHING FREQ-MAX, PQFP48 |
| 封装： | 7 X 7 MM, 1 MM HEIGHT, TQFP-48 |
| 文件页数： | 21/50页 |
| 文件大小： | 679K |
| 代理商： | L6711TR |
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Obsolete
Product(s)
- Obsolete
Product(s)
Dynamic VID transitions
L6711
28/50
11
Dynamic VID transitions
The device is able to manage Dynamic VID Code changes that allow Output Voltage
modification during normal device operation.
OVP and UVP signals are masked during every VID transition and they are re-activated
after the transition finishes.
When changing dynamically the regulated voltage (D-VID), the system needs to charge or
discharge the output capacitor accordingly. This means that an extra-current ID-VID needs to
be delivered, especially when increasing the output regulated voltage and it must be
considered when setting the over current threshold. This current result:
where dVOUT is the selected DAC LSB (12.5mV for VRD10.x or 25mV for Hammer DAC)
and TVID is the time interval between each LSB transition.
Overcoming the OC threshold during the dynamic VID causes the device to enter the
constant current limitation slowing down the output voltage dV/dt also causing the failure in
the D-VID test.
The way in which the device modifies the reference depends on the VID_SEL status and
then on the kind of DAC selected.
Figure 13.
Dynamic VID transition, VRD10.x DAC
I
DVID
–
C
OUT
dV
OUT
dT
VID
--------------------------------------
=
Tsw/3
x 4 Step VID Transition
VRD10.x DAC
t
VID
Sample
d
VID
Sample
d
VID
Sample
d
Ref
Mo
v
ed
(
1)
Ref
Mo
v
ed
(
2)
Ref
Mo
v
ed
(
3)
Ref
Mo
v
ed
(
4)
VID
Stab
le
VID [0,5]
Int. Reference
Vout
Tsw
VID
Sample
d
VID
Sample
d
Ref
Mo
v
ed
(
1)
Ref
Mo
v
ed
(
1)
Ref
Mo
v
ed
(
1)
VID
Sample
d
VID
Sample
d
4 x 1 Step VID Transition - VRD10.x DAC
TVID
VID
Sample
d
VID
Sample
d
VID
Sample
d
VID
Sample
d
VID
Sample
d
VID
Stab
le
VID
Stab
le
VID
Stab
le
Ref
Mo
v
ed
(
1)
VID
Sample
d
VID
Sample
d
VID
Stab
le
VID
Sample
d
VID
Sample
d
VID
Sample
d
t
VID Clock
相关PDF资料 |
PDF描述 |
|---|---|
| L6711 | 2 A SWITCHING CONTROLLER, 178 kHz SWITCHING FREQ-MAX, PQFP48 |
| L6714TR | SWITCHING CONTROLLER, 170 kHz SWITCHING FREQ-MAX, PQFP64 |
| L6714 | SWITCHING CONTROLLER, 170 kHz SWITCHING FREQ-MAX, PQFP64 |
| L6725TR | 20 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
| L6728ATR | SWITCHING CONTROLLER, 660 kHz SWITCHING FREQ-MAX, PDSO10 |
相关代理商/技术参数 |
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| L6712 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER |
| L6712_05 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER |
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| L6712AD | 功能描述:开关变换器、稳压器与控制器 2-Ph Interleaved RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| L6712ADTR | 功能描述:开关变换器、稳压器与控制器 2-Ph Interleaved RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
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