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參數(shù)資料
| 型號： | L6713ATR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2 A SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, PQFP64 |
| 封裝： | 10 X 10 MM, TQFP-64 |
| 文件頁數(shù)： | 31/64頁 |
| 文件大?。?/td> | 801K |
| 代理商： | L6713ATR |
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L6713A
Load transient boost technologyTM
37/64
13
Load transient boost technologyTM
Load transient boost LTB Technology (patent pending) is a L6713A feature to minimize
the count of output filter capacitors (MLCC and bulk capacitors) to respect the load transient
specifications.
The device turns on simultaneously all the phases as soon as a load transient is detected
and keep them on for the necessary time to supply the extra energy to the load. This time
depends on the COMP pin voltage and on a internal gain, in order to keep under control the
output voltage ring back.
Load transition is detected through LTB pin connecting a RLTB-CLTB vs. VOUT: the device
measures the derivate dV/dt of the output voltage and so it is able to turns on all the phases
immediately after a load transition detection, minimizing the delay intervention.
Modifying the RLTB-CLTB values the dV/dt can be easily programmed, extending the system
design flexibility
where dVOUT is the output voltage drop due to load transition.
Moreover, load transient boost LTB Technology gain can be easily modified in order to
keep under control the output voltage ring back.
Figure 12.
LTB connections (left) and waveform (right)
Short LTB pin to SGND to disable the LTB Technology: in this condition the device works
as a dual-edge asynchronous PWM controller.
R
LTB
dV
OUT
50
μA
------------------
=
C
LTB
1
2
π R
LTB
NF
SW
------------------------------------------------------
=
LTB
To VCC_Core
RLTB
CLTB
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| L6717 | 制造商:STMicroelectronics 功能描述:High-Efficiency Hybrid AM2r2 Controller 48-Pin VFQFPN Tray 制造商:STMicroelectronics 功能描述:HANDHELD & COMPUTER PM - Trays 制造商:STMicroelectronics 功能描述:High EFF Hybrid CTRL I2C Embedded Driver |
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