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參數(shù)資料
| 型號(hào)： | 7700 |
| 廠商： | BI TECHNOLOGIES CORP |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT AC-DC PWR FACTOR CORR MODULE |
| 封裝： | POWER, MODULE-14 |
| 文件頁(yè)數(shù)： | 4/5頁(yè) |
| 文件大小： | 111K |
| 代理商： | 7700 |
7-22
Model 7700
POWER
Maximum power available will be limited by the
20 Amp rms rating of the module and the lowest line
voltage expected:
Power dissipated can be estimated as follows:
Worst case efciency and output power:
OUTPUT VOLTAGE
The dc output voltage must be greater than the highest
peak line voltage expected:
DISCONTINUOUS CONDUCTION
When the line voltage approaches zero volts the PFC
PWM will be forced towards its maximum duty cycle.
This will cause the current to become discontinuous,
which will result in some distortion. The line voltage
at which the current will become discontinuous will be:
The line voltage at which the PWM will be duty cycle
limited will be:
APPLICATION NOTES (MODEL 7700)
INDUCTOR L1
The inductor value controls the amplitude of the
100KHz current ripple. This can greatly effect the
amount of distortion and thus the amount of EMI
ltering required on the input. Ripple current can
be calculated for any point along the input sine wave:
Where: DC(t)=1-VIN(t)/VO, L is the inductance of
L1, and f is the switching frequency.
A good starting point would be to set Ip-p equal to
20% of the 120 Hz peakcurrent, solving for L:
OUTPUT CAPACITOR
The output capacitor size is often limited by the line
dropout requirements of the power supply:
Where: POUT is the output power, td is the dropout
time, and VO MIN is the minimum allowed output
voltage.
The 120Hz output voltage ripple can be calculated
to insure it meets the system requirements:
The maximum rms 120Hz ripple current will be:
WC
eff =
IN MIN
P
-P
D
IN MIN
P
IN discontinuous
V
=
V x (1-DC
)
O
MAX
DC
C
=
2 xP x t
OUT
d
O
2
V - V
O MIN
2
O MIN
L
≥
IN
5 xV x (1-
)
IN
P x f
1.414 x VIN
VO
2
I
(t)=
V (t) x DC(t)
IN
Lx f
P – P
2xP
O
V
O
O P– P 120
()
V
=
x
+ ESR
1
2x
πxfxC
O
()
1.414x P
O
V
O
I
=
RMS 120
P
= V
x I
IN MAX
IN MIN
P = 4 x I +.3 x I
IN
2
D
P
= eff x P
IN MIN
WC
OUT WC
V
= V x (1-DC )
O
MAX
IN duty cycle limited
V > V
x 1.414
IN MAX
O
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| 7700/10 100'SF | 功能描述:CBL RIBN 10COND .025 SILVER 100' 制造商:3m 系列:7700 零件狀態(tài):在售 電纜類型:扁平纜線 導(dǎo)體數(shù):10 間距:0.025"（0.64mm） 長(zhǎng)度:100.0'（30.48m） 線規(guī):30 AWG 導(dǎo)線股數(shù):實(shí)心 屏蔽:無(wú)屏蔽 套管顏色:銀色 帶厚度:0.030"（0.76mm） 帶寬度:0.300"（7.62mm） 護(hù)套（絕緣）材料:聚烯烴（PO） 電壓:30V 工作溫度:-20°C ~ 80°C 等級(jí):- 特性:- 導(dǎo)體材料:銅，鍍錫 絕緣電阻:1 G歐姆 第一導(dǎo)體標(biāo)志:- 標(biāo)準(zhǔn)包裝:10 |
| 7700/100 100' | 功能描述:CBL RIBN 100COND .025 SLVR 100' 制造商:3m 系列:7700 零件狀態(tài):在售 電纜類型:扁平纜線 導(dǎo)體數(shù):100 間距:0.025"（0.64mm） 長(zhǎng)度:100.0'（30.48m） 線規(guī):30 AWG 導(dǎo)線股數(shù):實(shí)心 屏蔽:無(wú)屏蔽 套管顏色:銀色 帶厚度:0.030"（0.76mm） 帶寬度:2.550"（64.77mm） 護(hù)套（絕緣）材料:聚烯烴（PO） 電壓:30V 工作溫度:-20°C ~ 80°C 等級(jí):- 特性:- 導(dǎo)體材料:銅，鍍錫 絕緣電阻:1 G歐姆 第一導(dǎo)體標(biāo)志:- 標(biāo)準(zhǔn)包裝:6 |
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