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參數(shù)資料
| 型號(hào)： | QPI-8L |
| 廠商： | Vicor Corporation |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | AdvencedTCA Hot-Swap Sip With Active EMI Filter |
| 中文描述： | AdvencedTCA熱插拔有源EMI濾波器的SiP |
| 文件頁數(shù)： | 4/8頁 |
| 文件大小： | 268K |
| 代理商： | QPI-8L |
UVEN
LO
=
2.5 (RUVEN + 108450)
8450
UVEN
HI
= 2.5 V + (RUVEN + 100 K) (316 μA)
OV
LO
= 2.5 V + (ROV + 200 K) (348 μA)
OV
HI
=
2.5 (ROV + 206800)
6800
It is critical to keep the load current on the converter’s
input capacitor to less than 25 mA during the initial
power-up phase. This limit is set by the current limit level
and the duty cycle of the circuit breaker timer.
Once Powergood has been asserted the full load can
be enabled.
An external capacitor CE, shown in
Figures 9a and 9b
, will
provide the required UVEN hold-up filtering during the
ATCA's 5 ms, zero-volt BUS transient requirement.
Figure 8
shows the effects of CE during a BUS transient event.
Using a 2.2 μF CE capacitor and 1 mF of converter input
capacitance will enable this circuit to support a 42 W load
for the 5 ms transient. The Powergood state of the QPI-8
remains unchanged during this transient, allowing the
converter to maintain its output power to the load.
To prevent the QPI-8 from going into a fault mode and
deasserting the Powergood signal after the transient, the
converter’s input capacitors must be sized so that they can
be completely restored in the time of one 12 A current
pulse, about 1 ms, and still maintain the required input
current of the converter. If greater bulk capacitance is
required for higher loads, then the circuit in
Figure 9c
could be used to slowly charge the capacitors. To reduce
bulk capacitance and take advantage of the V
2
energy
relationship, a boost circuit with a switch-over function
can be used to charge fewer bulk storage capacitors to a
higher voltage.
Picor Corporation www.picorpower.com
QPI-8L Data Sheet Rev. 1.0 Page 4 of 8
P
P
R
R
E
E
L
L
I
I
M
M
I
I
N
N
A
A
R
R
Y
Y
Figure 8 –
5ms BUS transient, 42 W load
CH1: VBUS, CH3: PWRGD, CH4: Converter load current
0
5000
10000
15000
20000
25000
30000
Series Resistor
V
90.00
80.00
70.00
60.00
50.00
40.00
30.00
OV-HI
OV-LO
UV-HI
UV-LO
Figure 6 –
Trimming UV/OV with external series resistor.
Figure 7 –
UVEN and OV resistor equations.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| QPI-8LZ | 功能描述:IC HOT SWAP EMI FILTER 16LGA RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:Picor®, QUIETPOWER® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)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) |
| QPI-8LZ-01 | 功能描述:IC HOT SWAP EMI FILTER 16LGA RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:Picor®, QUIETPOWER® 標(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng)，AdvancedTCA ? 系統(tǒng)，高可用性 內(nèi)部開關(guān):無 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件 |
| QPI-9 | 制造商:VICOR 制造商全稱:Vicor Corporation 功能描述:Hot-Swap SiP With VI Chip EMI Filter |
| QPI-9-CB1 | 制造商:Vicor Corporation 功能描述:QPI-9LZ Filter w/ Hot-Swap Carrier Board for 24 V VI Chip "-CB" Boards up to 6A |
| QPI-9L | 制造商:VICOR 制造商全稱:Vicor Corporation 功能描述:VI Chip Input EMI Filters |
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