전자부품 데이터시트 검색엔진 |
|
L6520TR 데이터시트(PDF) 9 Page - STMicroelectronics |
|
L6520TR 데이터시트(HTML) 9 Page - STMicroelectronics |
9 / 19 page L6520, L6521 Functions description Doc ID 16998 Rev 3 9/19 5 Functions description 5.1 Start-up During the first start-up ramp of the supply voltage (VCC) both driver outputs, LSD and HSD, are low impedance to ground (Isink 20 mA min). Once the VCC voltage reaches the turn-on voltage VCC(ON) the IC starts its operation. During the first 100 µs the IC senses the status of FPRE pin to detect the programmed preheating frequency and the selected ignition mode (instant or preheated start). When all the IC internal functions are ready, the driver-outputs are released. If the preheated start is selected, the half-bridge oscillates at the programmed preheating frequency, otherwise it starts from 85 kHz (typ.). 5.2 Preheating and instant start The preheating time is 1.5 s (typ.) in the L6520 and 0.8 s (typ.) in the L6521. The FPRE pin embeds a precise current reference: the voltage read by this pin sets the preheating frequency or enables the instant start. If the FPRE pin is connected to ground, the instant start is active and the IC runs immediately into ignition sequence from the starting frequency of 85 kHz. If the pin FPRE is connected to a resistor equal or higher than 196 Ω, the preheating frequency can be programmed from 55 kHz upwards till 100 kHz (1.5 kHz/step) accordingly to Table 6. For the best precision the resistor tolerance should be less or equal to 1%. After the preheating sequence, the IC runs into ignition mode. Table 6. Preheating and instant start FPRE (kHz) RFPRE (Ω) FPRE (kHz) RFPRE (Ω) Instant start 0 77.5 5490 55 196 79 6190 56.5 383 80.5 6980 58 576 82 7870 59.5 806 83.5 8660 61 1050 85 9530 62.5 1300 86.5 10500 64. 1580 88 11500 65.5 1870 89.5 12700 67 2210 91 14000 68.5 2550 92.5 15400 70 2940 94 16900 71.5 3400 95.5 18700 73 3830 97 20500 74.5 4320 98.5 22600 76 4870 100 24900 |
유사한 부품 번호 - L6520TR |
|
유사한 설명 - L6520TR |
|
|
링크 URL |
개인정보취급방침 |
ALLDATASHEET.CO.KR |
ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 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 |