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參數(shù)資料
| 型號(hào)： | PS11NG |
| 廠商： | SUPERTEX INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14 |
| 封裝： | SOIC-14 |
| 文件頁(yè)數(shù)： | 11/14頁(yè) |
| 文件大?。?/td> | 210K |
| 代理商： | PS11NG |
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PS10/PS11
6
A051204
Undervoltage/Overvoltage Operation
GND
UV
OFF
UV
ON
Vin
OV
ON
OV
OFF
PWRGD
SET RESET
Start-up Timing (PS11 PWRGD-A Active Low)
t
PWRGD-A is the time delay from VEEUV(on) to PWRGD-A going
active. It can be approximated by
t
PWRGD-A = CRAMP x (VINT-1.17)/IRAMP
where
C
RAMP = capacitor connected from RAMP pin to VEE pin
V
INT = internal regulated power supply voltage (10V typ)
I
RAMP = 10A charge current
PWRGD Flags Delay Programming
When the ramp voltage hits Vint – 1.17V, PWRGD-A be-
comes active indicating that the input supply voltage is
within the programmed limits. PWRGD-B goes active after
a programmed time delay after PWRGD-A went active.
PWRGD-C goes active after a programmed time delay
after PWRGD-B went active. PWRGD-D goes active after
a programmed time delay after PWRGD-C went active.
The resistors connected from TB, TC, and TD to V
EE pin
determines the delay times between the PWRGD flags.
The value of the resistors determines the capacitor charg-
ing and discharging current of a triangular wave oscillator.
The oscillator output is fed into an 8-bit counter to gener-
ate the desired time delay.
The respective time delay is defined by the following equa-
tion:
t
TX = (255 x 2 x COSC x VPP)/ICD
and
I
CD = Vbg / (4 x RTX)
Where
t
TX = Time delay between respective PWRGD flags
C
OSC = 120pF (internal oscillator capacitor)
V
PP = 8.2V (peak-to-peak voltage swing of oscillator)
I
CD = Charge and discharge current of oscillator
Vbg = 1.17V (internal band gap reference)
R
TX = Programming resistor at TB, TC, or TD
Combining the two equations and solving for R
TX yields:
R
TX
= (Vbg x t
TX) / (2040 x COSC x VPP)
= 0.585 x 10
6 x t
TX
For a time delay of 200ms
R
TX
= 0.585 x 10
6 x 0.2 = 117k
For a time delay of 5ms
R
TX
= 0.585 x 10
6 x 0.005 = 2.925k
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PS11NG-G | 功能描述:DC/DC 開關(guān)控制器 Quad Pwr Seq Cntlr 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 |
| PS11NG-M905 | 功能描述:DC/DC 開關(guān)控制器 Quad Pwr Seq Ctlr 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 |
| PS11NG-M905-G | 功能描述:DC/DC 開關(guān)控制器 Quad Pwr Seq Ctlr 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 |
| PS12 | 制造商:Panduit Corp 功能描述: |
| PS-12 | 功能描述:罩類、盒類及殼類產(chǎn)品 RoHS:否 制造商:Bud Industries 產(chǎn)品:Boxes 外部深度:6.35 mm 外部寬度:6.35 mm 外部高度:2.56 mm NEMA 額定值: IP 等級(jí): 材料:Acrylonitrile Butadiene Styrene (ABS) 顏色:Red |
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