 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
DIM3R3300SFB Datasheet(PDF) 10 Page - Delta Electronics, Inc. |
|
||||||||||||||||||||||||||||||
DIM3R3300SFB Datasheet(HTML) 10 Page - Delta Electronics, Inc. |
|
|
10 / 13 page  PRELIMINARY DATASHEET DS_DIM3R3_03252009 10 FEATURES AND DESIGN CONSIDERATIONS (CONTINUED) The PICMG 3.0’s requirements for the 0 Vdc transient is 5mS with 50V/ms fall slew rate and 12.5 V/ms rise slew rate. This requirement will lead to a 9.3ms T_HLDP requirement assuming power is interrupted at -43Vdc (Vth). Considering power output is 300W, Vth is 43V, ) ( 1672 43 72 3 . 9 * 300 * 2 _ 2 2 uF HLDP C = − = When the input voltage is at the threshold of discharge, C_HLDP will go off line and the charge pump will recharge it to 72V. The discharge resistor for C_HLDP is not required, because there is sufficient standby current in the module to bleed the holdup capacitors from 75V to 60V within 1 second as specified in the PICMG 3.0. Furthermore a bleed resistor will induce extra loss of the MOSFET of the charging circuit. Over-Current Protection DIM3R3/050 provides two over current protection levels. When the output current exceeds the low current limit level, the current will be kept for a period of time before the module is shut down. After a fixed delay time, the module will try to restart. If the output current exceeds the high current limit level, the module will shut down immediately. Then it will go through the same restarting procedure. A/B Feed / Fuse Alarm (-48V_ALARM) The input feeds A and B are monitored. The module will send an opto-isolated signal if any of the feed is below the voltage threshold (typical 35V). Therefore, the loss of any A or B feed can be detected. The opto coupler transistor on state indicates a normal status and off state indicates a fault condition. Input Under Voltage Lockout The input under-voltage lockout prevents the module from being damaged by low input voltage. When the input voltage is lower than its threshold voltage, the module will be turned off. The lockout occurs between -33.3V to -35.3V. Transient Over Voltage Protection The PICMG 3.0 requires the module work normally under 200V/5μS and 100V/10μS input voltage transient. DIM3R3/050 can meet the requirement. An internal TVS with 80V/1500W peak pulse power rating will suppress the 200V transient voltage. For the 100V pulse voltage, the power train impedance will damp it below internal components rating without shut down the module. When input voltage of the module is higher than 81.8V, the module will be turned off. The module will restart when the input voltage drop down to 79.8V. Management Power and Blue_LED Power The module contains two isolated DC output. The first output provides up to 8W of 3.3V (DIM3R3) or 5.0V (DIM050) management power (reference to LOGIC_GND). This power is used to power the IPM controller for the ATCA board or to power up system controller for other applications. The second isolated output, 5V/100mA, is used to power the Blue LED per PICMG 3.0 requirement. The management power is available as soon as the input voltage levels are within –36Vdc to –75Vdc. The output is short circuit and over voltage protected. The module is in a hiccup mode under an OCP or short output condition. The output voltage will keep constant under over voltage status. No additional output capacitors are required, but a 22µF tantalum/ceramic and a 0.01µF to 0.1µF ceramic capacitors are highly recommended to reduce the switching ripple and noise. Higher output capacitance may be required in case of large input line or output load transient conditions. |
Similar Part No. - DIM3R3300SFB |
|
Similar Description - DIM3R3300SFB |
|
|
|
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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
