Moteur de recherche de fiches techniques de composants électroniques |
|
UC2875-EP Fiches technique(PDF) 10 Page - Texas Instruments |
|
UC2875-EP Fiches technique(HTML) 10 Page - Texas Instruments |
10 / 18 page UC2875EP PHASE SHIFT RESONANT CONTROLLER SGLS233A − FEBRUARY 2004 − REVISED DECEMBER 2008 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 APPLICATION AND OPERATION INFORMATION Syncing to External TTL/CMOS Figure 6. Snychronizing to an External TTL/CMOS Clock Signal ICs will sync to fastest chip or TTL clock if it is higher frequency. R and RN may be needed for same reasons as above. Although each UC2875 has a local oscillator frequency, the group of devices will synchronize to the fastest oscillator driving the CLOCKSYNC pin. This arrangement allows the synchronizing connection between ICs to be broken without any local loss of functionality. Synchronizing the device to an external clock signal may be accomplished with a minimum of external circuitry, as shown in Figure 6. Capacitive loading on the CLOCKSYNC pin will increase the clock pulse width, and may adversely effect system performance. Therefore, a resistor to ground from the CLOCKSYNC pin is optional, but may be required to offset capacitive loading on this pin. These resistors are shown in the oscillator schematics as R1, RN. Delay Blocks and Output Stages In each of the output stages, transistors Q3 through Q6 form a high-speed totem-pole driver which will source or sink more than one amp peak with a total delay of approximately 30 nanoseconds. To ensure a low output level prior to turn-on, transistors Q7 through Q9 form a self-biased driver to hold Q6 on prior to the supply reaching its turn-on threshold. This circuit is operable when the chip supply is zero. Q6 is also turned on and held low with a signal from the fault logic portion of the chip. |
Numéro de pièce similaire - UC2875-EP_15 |
|
Description similaire - UC2875-EP_15 |
|
|
Lien URL |
Politique de confidentialité |
ALLDATASHEET.FR |
ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Echange de liens | Fabricants 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 |