參數(shù)資料
型號： LTC4216IMS
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： Ultralow Voltage Hot Swap Controller
中文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10
封裝： PLASTIC, MSOP-10
文件頁數(shù)： 22/24頁
文件大?。?/td> 277K
代理商： LTC4216IMS
LTC4216
4216f
22
TIMER
SENSEP–SENSEN
SENSEP
FILTER
SS
2.4
μ
A
V
TMR(TH)
V
FILT(TH)
60
μ
A
2
μ
A
V
TMR(TH)
2
μ
A
40mV
25mV
10
μ
A
10
μ
A
1
μ
A
1
2
3
4
6
7 8 9
0.4V
0.8V
V
OL
10
1112
13
14
5
CHECK FOR GATE, FILTER,
TIMER, SS < 0.2V
CHECK FOR GATE, FILTER,
TIMER, SS < 0.2V AND FAULT HIGH
ELECTRONIC CIRCUIT
BREAKER ARMED
4216 F19
ON/FAULT
0.8V
OUTPUT IN ANALOG CURRENT LIMIT
ON/FAULT PULLED LOW
DEVICE RESET
1ST TIMING CYCLE RESTART
FILTER RAMPS UP WHEN
(V
SENSEP
–V
SENSEN
) >25mV
GATE
(V
GATE
– V
OUT
) > V
GS(TH)
TRACKS SS RAMP
GATE
REGULATING
t
FILTER
t
RST(ONLO)
t
SS
t
OFF
t
TIMER
t
OFF
t
TIMER
Figure 19. Auto-Retry Timing
complicates the equation for t
OFF
. This is approximately
given by:
t
FILTER
= circuit breaker response time as given by Equation
(2); t
SS
= approximated time taken to charge the soft-start
capacitor, C2, from 0V to its final value (1.65V) by 10μA
current source only.
t
R
C
V
R
+
V
μ
V
(
V
A
OFF
AUTO
AUTO
ON TH
(
OL
IN
ON TH
(
AUTO
≈
(
)
)
–
)
)
5
(21)
For the component values shown, the external RC time
constant is set at 0.2 second, t
TIMER
= 62ms, t
OFF
= 25ms
at V
IN
= 5V, t
SS
= 1.6ms, t
FILTER
= 480μs and the auto-retry
duty cycle is 2.3%. The auto-retry duty cycle can be further
reduced by increasing both the t
TIMER
delay and the RC
delay. As an example, increasing the TIMER capacitor, C1,
value from 100nF to 330nF, and R
AUTO
value from 200k
to 470k reduces the duty cycle to 0.8%.
APPLICATIU
W
U
U
Figure 18. Auto-Retry Application
SENSEP SENSEN GATE
ON
GND
FB
SS
11
10
9
8
7
12
1
4
2
5
3
6
FILTER
LTC4216
R3
10k
1%
R4
64.9k
1%
C
Y
330nF
C
100nF
R
200k
C
AUTO
1
μ
R5
10k
LONG
SHORT
LONG
BACKPLANE
CONNECTOR
(FEMALE)
PCB EDGE
CONNECTOR
(MALE)
C1
100nF
C2
4.7nF
C3
22nF
V
IN
5V
V
OUT
5V
5A
GND
M1
Si4864DY
+
C
LOAD
470
μ
F
V
CC
RESET
Z1: SMAJ6.0A
TIMER
Z1
FAULT
RESET
4216 F18
R
0.004
R
Y
22
R
X
10
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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LTC4217CDHC 制造商:LINER 制造商全稱:Linear Technology 功能描述:2A Integrated Hot Swap Controller
LTC4217CDHC#PBF 功能描述:IC CTRLR HOT SWAP 2A 16-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:119 系列:- 類型:熱交換控制器 應(yīng)用:通用型，PCI Express? 內(nèi)部開關(guān):無 電流限制:- 電源電壓:3.3V，12V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:80-TQFP 供應(yīng)商設(shè)備封裝:80-TQFP（12x12） 包裝:托盤 產(chǎn)品目錄頁面:1423 (CN2011-ZH PDF)
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