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參數(shù)資料
| 型號： | LT3958IUHE#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PQCC36 |
| 封裝： | 5 X 6 MM, LEAD FREE, PLASTIC, QFN-36 |
| 文件頁數(shù)： | 15/28頁 |
| 文件大?。?/td> | 320K |
| 代理商： | LT3958IUHE#PBF |
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LT3958
22
3958f
APPLICATIONS INFORMATION
In yback conguration, the high di/dt primary loop
contains the input capacitor, the primary winding,
the internal power MOSFET. The high di/dt second-
ary loop contains the output capacitor, the secondary
winding and the output diode.
In SEPIC conguration, the high di/dt loop con-
tains the internal power MOSFET, output capacitor,
Schottky diode and the coupling capacitor.
In inverting conguration, the high di/dt loop con-
tains internal power MOSFET, Schottky diode and the
coupling capacitor.
Check the stress on the internal power MOSFET by measur-
ing the SW-to-GND voltage directly across the IC terminals.
Make sure the inductive ringing does not exceed the
maximum rating of the internal power MOSFET (84V).
The small-signal components should be placed away from
high frequency switching nodes. For optimum load regula-
tion and true remote sensing, the top of the output voltage
sensing resistor divider should connect independently to
the top of the output capacitor (Kelvin connection), staying
away from any high dV/dt traces. Place the divider resis-
tors near the LT3958 in order to keep the high impedance
FBX node short.
Figure 9 shows the suggested layout of the 48V VOUT boost
converter (see the Typical Applications section).
3958 F09
LT3958
37
38
12 13 14 15 16 17
36 35 34 33 32 31 30
21
23
24
25
27
28
8
6
4
3
2
1
20
9
10
VIA TO VOUT
R1
R2
CSS
RT
RC
CC
CVCC
R3
R4
D1
L1
COUT
CIN
GND
VOUT
VIN
VIA TO VOUT
VIAS TO SGND GROUND PLANE
VIAS TO SW PLANE
Figure 9. Suggested Layout of the 10V to 40V Input, 48V Output Boost Converter
相關(guān)PDF資料 |
PDF描述 |
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| LT3958EUHE#PBF | SWITCHING REGULATOR, PQCC36 |
| LT3958EUHE#TRPBF | SWITCHING REGULATOR, PQCC36 |
| LT4180MPGN#PBF | POWER SUPPLY SUPPORT CKT, PDSO24 |
| LT4180IGN#PBF | POWER SUPPLY SUPPORT CKT, PDSO24 |
| LT4180EGN#TRPBF | POWER SUPPLY SUPPORT CKT, PDSO24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT3958IUHETRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Input Voltage, Boost, Flyback, SEPIC and Inverting Converter |
| LT3959 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Wide Input Voltage Range Boost/SEPIC/Inverting Converter with 6A, 40V Switch |
| LT3959EFE#PBF | 制造商:Linear Technology 功能描述:IC REG MULTI CONFIG ADJ 38TSSOP |
| LT3959EFE#PBF | 制造商:Linear Technology 功能描述:DC-DC CONV BOOST/INVERTING TSSOP-38 制造商:Linear Technology 功能描述:DC-DC CONV, BOOST/INVERTING, TSSOP-38 |
| LT3959EFE#TRPBF | 制造商:Linear Technology 功能描述:IC REG MULTI CONFIG ADJ 38TSSOP |
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