 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
UCC28250 Datasheet(PDF) 18 Page - Texas Instruments |
|
|
||||||||||||||||||||||||||||||
UCC28250 Datasheet(HTML) 18 Page - Texas Instruments |
|
|
18 / 50 page  B MAX 3 V R I / n = CS OUTA OUTB COMP UCC28250 SLUSA29B – APRIL 2010 – REVISED OCTOBER 2010 www.ti.com CS: Current Mode Control For current mode control, the RAMP/CS pin is driven by a signal representative of the transformer primary-side current. The current signal has to have compatible input range of the COMP pin. As shown in Figure 12, the COMP pin voltage is used as the reference for peak current. The primary-side signals OUTA and OUTB are turned on by the internal clock signal and turned off when sensed peak current reaches the COMP pin voltage. Choose the current sense transformer turns ratio (1:n) and the burden resistor value (RB) based on the peak current at maximum load IMAX. Refer to the Functional Description section for more details on the current mode control. (7) Figure 12. Peak Current Mode Control and PWM Generation REF/EA+ (1/8) REF/EA+ is the non-inverting input of the UCC28250’s internal error amplifier. When the UCC28250 is configured for secondary-side control, the internal error amplifier is used as the control loop error amplifier. Connect REF/EA+ directly to the VREF pin to provide the reference voltage for the feedback loop. When the UCC28250 is configured for primary-side control, the error amplifier is connected as a voltage follower. Connect REF/EA+ to the opto-coupler output. The voltage range on REF/EA+ pin is 0 V to 3.7 V. 18 Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated Product Folder Link(s): UCC28250 |
Similar Part No. - UCC28250 |
|
Similar Description - UCC28250 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
