 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
EN5336QI Datasheet(PDF) 10 Page - Altera Corporation |
|
||||||||||||||||||||||||||||||
EN5336QI Datasheet(HTML) 10 Page - Altera Corporation |
|
|
10 / 15 page  EN5336QI 10 www.altera.com/enpirion of VOUT and below the user programmed OVP trip-point. If the output voltage goes outside of this range, the POK signal will be a logic low until the output voltage has returned to within this range. In the event of an over-voltage condition the POK signal will go low and will remain in this condition until the output voltage has dropped to 95% of the programmed output voltage before returning to the high state. NOTE: If no over voltage protection is used, POK will remain “high” as long as V OUT remains above 90% of the nominal VOUT setting. Over-Current Protection The current limit function is achieved by sensing the current flowing through the sense P- MOSFET. When the sensed current exceeds the current limit, both NFET and PFET switches are turned off. If the over-current condition is removed, the over-current protection circuit will enable the PWM operation. This circuit is designed to provide high noise immunity. The nominal over current trip point is set to 4.5A. It is possible to increase the over-current set point by about 50% by connecting a 7.5k resistor between ROCP (pin 27) and GND. The typical voltage at the ROCP pin is 0.75V. In some cases, such as the start-up of FPGA devices, it is desirable to blank the over-current protection feature. In order to disable over- current protection, the ROCP pin should be tied to any voltage between 2.5V and PVIN. Over-Voltage Protection When the output voltage exceeds 120% of the programmed output voltage, the PWM operation stops, the lower N-MOSFET is turned on and the POK signal goes low. When the output voltage drops below 95% of the programmed output voltage, normal PWM operation resumes and POK returns to its high state. Thermal Overload Protection Thermal shutdown will disable operation once the Junction temperature exceeds approximately 150ºC. Once the junction temperature drops by approx 25ºC, the converter will re-start with a normal soft-start. Input Under-voltage Lock-out Circuitry is provided to ensure that when the input voltage is below the specified voltage range, the converter will not start-up. Circuits for hysteresis, input de-glitch and output leading edge blanking are included to ensure high noise immunity and prevent false tripping. Compensation The EN5336QI is internally compensated through the use of a type 3 compensation network and is optimized for use with about 50uF of output capacitance and will provide excellent loop bandwidth and transient performance for most applications. (See the section on Capacitor Selection for details on recommended capacitor types.) Voltage mode operation provides high noise immunity at light load. In some cases modifications to the compensation may be required. For more information, contact Power Applications support. |
Similar Part No. - EN5336QI |
|
Similar Description - EN5336QI |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
