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參數(shù)資料
| 型號(hào)： | L6917D |
| 廠(chǎng)商： | STMICROELECTRONICS |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | SO-28 |
| 文件頁(yè)數(shù)： | 16/27頁(yè) |
| 文件大?。?/td> | 411K |
| 代理商： | L6917D |
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23/27
L6917
s
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)
s
Output Capacitor:
Six PANASONIC SP-CAP EEFUE0D27 (270
F, 15mmax) 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.
s
Compensation Network:
A voltage loop bandwidth of 40kHz is considered to let the device fast react after load transient.
fTV = 20kHz=>
The RF CF network results:
(R8)
(C2)
s
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
SMD 0805
R12 to R15
0
SMD 0805
C2
4.7n
SMD 0805
C3, C4
100n
SMD 0805
C5, C6, C7
1
Ceramic
SMD 1206
C8, C9, C10
10
Ceramic
SMD 1206
C11, C12, C13
100
/ 20V
OSCON 20SA100M
Radial 10x10.5
C19 to C24
270
/ 2V
PANASONIC SP-CAP
SMD 7343
L1, L2
1
77121 Core – 7 Turns or
TO50-52B Core – 6 Turns
U1
L6917
STMicroelectronics
SO28
Q1, Q3
STB90NF03L
STMicroelectronics
D2PACK
Q2, Q4
STB70NF03L
STMicroelectronics
D2PACK
D1, D2
STPS340U
STMicroelectronics
SMB
D3, D4
1N4148
STMicroelectronics
SOT23
L
Vin
Vout
–
I
-----------------------------
d
Fs w
-----------
12
1.7
–
5
---------------------
1.7
12
--------
1
300000
--------------------
1
H
==
=
f
TI
f
TV
Rs R
FB
ESR Rg
-------------------------
20k
7.8m 2k
2.5m 8.2k
------------------------------
15.2k Hz
==
=
R
F
Rg
Rs
--------
Vos c
Vin
------------------
L
2
---
ω
TI
8.2k
7.8m
-------------
2
12
------
1
2
------- 2
π 15.2k
8.2k
==
=
C
F
L
2C
OUT
-----------------------
R
F
---------------------------
1
2 1.62m
------------------------
8.2k
-----------------------------
3.4nF
==
=
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PDF描述 |
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| L6919CD | SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO28 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6917DTR | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:Analog IC |
| L6918 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER |
| L6918A | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER |
| L6918AD | 功能描述:DC/DC 開(kāi)關(guān)控制器 Prog Multi-Phase Cnt RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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 |
| L6918ADTR | 功能描述:DC/DC 開(kāi)關(guān)控制器 Prog Multi-Phase Cnt RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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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