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參數(shù)資料
| 型號： | KBMF01SC6 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | EMI FILTER AND LINE TERMINATION FOR PS/2 MOUSE OR KEYBOARD PORTS |
| 中文描述： | EMI濾波器和線路終端使用的PS / 2鼠標(biāo)或鍵盤端口 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大小： | 90K |
| 代理商： | KBMF01SC6 |
KBMFxxSC6
4/8
To have a good approximation of the remaining voltages at both Vinput and Voutput stages, we give the
typical dynamical resistance value Rd. By taking into account these following hypothesis : Rt>Rd, Rg>Rd
and Rload>Rd, it gives these formulas:
Vinput
=
R V
g
R V
d
R
BR
g
g
+
.
.
Voutput
R V
S
R Vinput
R
t
BR
d
=
+
.
.
The results of the calculation done for V
PP
=8kV, Rg=330
(IEC 61000-4-2 standard), Vbr=7V
(typ.) and Rd = 1ohm (typ.) give:
Vinput = 31.2 V
Voutput = 7.8 V
This confirms the very low remaining voltage across the device to be protected. It is also important to note
that in this approximation the parasitic inductance effect was not taken into account. This could be few
tenths of volts during few ns at the input side. This parasitic effect is not present at the output side due the
low current involved after the resistance R
S
.
The measurements done here after show very clearly (Fig. A5) the high efficiency of the ESD protection :
- no influence of the parasitic inductances on output stage
- Voutput clamping voltage very close to Vbr (positive strike) and -Vf (negative strike)
TEST BOARD
ESD
SURGE
16kV
Air
Discharge
Vin
Vout
K
Fig. A4:
Measurement conditions
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| KBMFXXSC6 | EMI FILTER AND LINE TERMINATION FOR PS/2 MOUSE OR KEYBOARD PORTS |
| KBP005G | Tantalum Molded Capacitor; Capacitance: 330uF; Voltage: 6.3V; Case Size: 7.3x4.3 mm; Packaging: Tape & Reel |
| KBP06G | RES 301K 1% .063W |
| KBP04G | 1.5A GLASS PASSIVATED BRIDGE RECTIFIER |
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參數(shù)描述 |
|---|---|
| KBMFXXSC6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:EMI FILTER AND LINE TERMINATION FOR PS/2 MOUSE OR KEYBOARD PORTS |
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