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參數(shù)資料
| 型號： | L6917BD |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER |
| 中文描述： | 5位可編程雙相控制器 |
| 文件頁數(shù)： | 23/27頁 |
| 文件大?。?/td> | 411K |
| 代理商： | L6917BD |
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23/27
L6917
I
Inductor design:
Each phase has to deliver up to 22.5A; considering a current ripple of 5A (<25%), the resulting
inductance value is:
(L1, L2)
I
Output Capacitor:
Six PANASONIC SP-CAP EEFUE0D27 (270
μ
F, 15m
max) has been used implementing a resulting
ESR of 2.5m
resulting in a voltage drop of 45A*2.5m
=112.5mV after a load transient.
I
Compensation Network:
A voltage loop bandwidth of 40kHz is considered to let the device fast react after load transient.
Rs R
ESR Rg
f
TV
= 20kHz=>
The R
F
C
F
network results:
(R8)
(C2)
I
VID settings:
Considering the 100mV voltage drop programmed by the feedback resistor and the static tolerance, the
VID are set for 1.775V (00011 code) in order to have a
±
25mV of margin in the regulation.
Part List
R1
10k
SMD 0805
R2, R9, R20
Not Mounted
SMD 0805
R3, R4, R5, R6
8.2k
1%
SMD 0805
R7
2k
1%
SMD 0805
R8
10k
SMD 0805
R10
82
0
4.7n
SMD 0805
R12 to R15
SMD 0805
C2
SMD 0805
C3, C4
100n
SMD 0805
C5, C6, C7
1
μ
10
μ
100
μ
/ 20V
270
μ
/ 2V
1
μ
Ceramic
SMD 1206
C8, C9, C10
Ceramic
SMD 1206
C11, C12, C13
OSCON 20SA100M
Radial 10x10.5
C19 to C24
PANASONIC SP-CAP
SMD 7343
L1, L2
77121 Core – 7 Turns or
TO50-52B Core – 6 Turns
U1
L6917
STMicroelectronics
SO28
Q1, Q3
STB90NF03L
STMicroelectronics
D
2
PACK
Q2, Q4
STB70NF03L
STMicroelectronics
D
2
PACK
D1, D2
STPS340U
STMicroelectronics
SMB
D3, D4
1N4148
STMicroelectronics
SOT23
L
Vin
-----------–
Vout
I
d
Fsw
-----------
12
---------------------
1.7
–
5
1.7
12
-------
1
300000
--------------------
1
μ
H
=
=
=
f
TI
f
TV
-------------------------
20k
2.5m 8.2k
------------------------------
15.2kHz
=
=
=
R
F
Rs
-------
Vin
------------------
L
2
--
ω
TI
7.8m
-------------
12
-----
μ
2
------
2
π
15.2k
8.2k
=
=
=
C
F
L
2 C
R
F
-----------------------
---------------------------
8.2k
------------------------
-----------------------------
3.4nF
=
=
=
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相關(guān)代理商/技術(shù)參數(shù) |
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| L6917BDTR | 功能描述:DC/DC 開關(guān)控制器 Prog Dual-Phase Cont RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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| L6918A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER |
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