Electronic Components Datasheet Search |
|
UCC2541RHBT Datasheet(PDF) 9 Page - Texas Instruments |
|
UCC2541RHBT Datasheet(HTML) 9 Page - Texas Instruments |
9 / 43 page UCC2541 SLUS621A − AUGUST 2004 − SEPTEMBER 2005 9 www.ti.com APPLICATION INFORMATION The UCC2541 is a high-efficiency synchronous buck controller that can be used in many point-of-load applications. CEA− and VEA− pins: Current Limit and Hiccup Mode Typical power supply load voltage versus load current is shown in Figure 2. This figure shows steady state operation for no-load to overcurrent shutdown (soft-start retry is not depicted in the diagram). During the voltage regulation conditions, the voltage error amplifier output is lower than the current error amplifier, allowing the voltage error amplifier to control operation. During the current limit conditions, the current error amplifier output is lower than the voltage error amplifier, allowing the current error amplifier to control operation. The boundary between voltage and current control occurs when the difference between CEA− and VEA− tries to exceed 50 mV. Current limiting begins to occur when the difference between CEA− and VEA− exceeds 50 mV. For currents that exceed this operating condition, the UCC2541 controls the converter to operate as a pure current source until the output voltage falls to half of its rated steady state level. Then the UCC2541 sets both G1 and G2 outputs to LOW and it latches a fault that discharges the soft-start voltage at 30% of its charging rate. The UCC2541 inhibits a retry until the soft-start voltage falls below 0.5 V. A functional diagram of the voltage and current error amplifiers is shown in Figure 3. UDG−04053 Shutdown Limited Current ILOAD − Load Current − A VREG Figure 2. Typical Power Supply Load Voltage vs Current |
Similar Part No. - UCC2541RHBT |
|
Similar Description - UCC2541RHBT |
|
|
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 |
Family Site : ic2ic.com |
icmetro.com |