 |
전자부품 데이터시트 검색엔진 |
|
|
전자부품 데이터시트 검색엔진 |
|
UM1693 데이터시트(PDF) 21 Page - STMicroelectronics |
|
|
|||||||||||||||||||||||||||||
UM1693 데이터시트(HTML) 21 Page - STMicroelectronics |
|
|
21 / 196 page  DocID025505 Rev 1 21/196 UM1693 Reverse battery protection 195 Dimensioning of the GND resistor The GND resistor is recommended in case of a high inductive load. To determine if the resistor is needed or not, we need to know the demagnetization time (TDEMAG). The resistor is recommended if TDEMAG is higher than the standby delay time (tD_STBY). A typical tD_STBY value of 350 µs is considered in this comparison. TDEMAG can be determined by either measurement (Figure 6, RGND = 4.7 kΩ, Load: Relay 270 mH/ 90 Ω alternatively Bulb on a typical wire harness with 6 µH stray inductance) or calculation, using Equation 1 and Equation 2. Figure 4. Negative GND shift (TDEMAG > tD_STBY) Equation 1 Equation 2 V DEMAG V BAT V CLAMP – = T DEMAG L R ---- ln V DEMAG I 0 R ⋅ + V DEMAG ----------------------------------------------- ⋅ = |
|
링크 URL |
| ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 링크 투 데이터시트 | 링크교환 | 제조사별 검색 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Korean ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
