전자부품 데이터시트 검색엔진 |
|
Q67000-A9230 데이터시트(PDF) 7 Page - Siemens Semiconductor Group |
|
|
Q67000-A9230 데이터시트(HTML) 7 Page - Siemens Semiconductor Group |
7 / 27 page TDA 4916 GG Semiconductor Group 7 05.96 Operational Amplifier OP Opamp OP is a high-quality operational amplifier. It can be used in the control circuit to transfer the variations in the voltage to be regulated in amplified form to the free plus input of comparator K1. As a result, a voltage change is converted into a duty factor change. The output of OP is an open collector. The frequency response of OP is already corrected. The plus input is connected internally via a capacitor to ground. This gives the inverting amplifier a more favorable phase response. Turn-OFF Flip-Flop AFF A pulse is fed to the set input of the turn-OFF Flip-Flop with the falling edge of the frequency generator signal. However, it can only really be set if no reset signal is applied. With a set turn-OFF Flip-Flop, the output is enabled and can be active. The Flip-Flop inhibits the output in the event of a turn-OFF signal from K1, K5, K6 or K7. Fault Flip-Flop Fault signals fed to the reset input of the fault Flip-Flop cause the output to be immediately disabled (Low), and to be turned on again via the soft start C SS after removing fault-condition. Soft Start C SS The smaller of the two voltages at the plus inputs of K1 - compared with the ramp generator voltage - is a measure of the duty factor at the output. At the instant the device is turned-ON, the voltage on capacitor C SS equals zero. Provided no fault exists, the capacitor is charged up to its maximum value. C SS is discharged in the event of a fault. However, the fault Flip-Flop inhibits the output immediately. Below a charging voltage of approx. 1.5 V, a set signal is applied to the fault Flip-Flop and the output is enabled, provided a reset signal is not applied simultaneously. However, since the minimum ramp generator voltage is about 1.8 V, the duty factor at the output is not actually slowly and continuously increased until the voltage on C SS exceeds a value of 1.8 V. The Z-diode limits the voltage on capacitor C SS. The voltage at the ramp generator can reach a higher level than the Zener voltage. With a suitable ramp generator rising edge slope, the duty factor can be limited to a wanted maximum value. Pulse Omission PO In the event of overcurrent in the SIPMOS transistors it is frequently necessary to omit pulses even with minimum duty factor. Only this measure ensures that the SIPMOS transistors cannot be overloaded. This wanted function can be achieved with Pulse Omission PO and Overcurrent Comparator K7 by means of a suitable external circuit. |
유사한 부품 번호 - Q67000-A9230 |
|
유사한 설명 - Q67000-A9230 |
|
|
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 |