Electronic Components Datasheet Search |
|
BM2P011 Datasheet(PDF) 7 Page - Rohm |
|
BM2P011 Datasheet(HTML) 7 Page - Rohm |
7 / 23 page 7/19 Datasheet Datasheet BM2PXX1 Series TSZ02201-0F2F0A200010-1-2 24.Sep.2015.Rev.005 © 2012 ROHM Co., Ltd. All rights reserved. www.rohm.com TSZ22111・15・001 (2) Start sequences (Soft start operation, light load operation, and auto recovery operation during overload protection) Start sequences are shown in Figure 7. See the sections below for detailed descriptions. Vout Switing VH VCC(1pin) FB(8pin) Soft Start 64ms Iout Normal Load Light LOAD Within 32ms VCC=8.2V Over Load Internal REF Pull Up Burst mode AB C D EF GH I Switching stop VCC=13.5V FB OLP ON Figure 7. Start sequences Timing Chart A: Input voltage VH is applied B: This IC starts operation when VCC pin voltage rises and VCC > VUVLO1 (13.5 V typ). Switching function starts when other protection functions are judged as normal. Until the secondary output voltage becomes constant level, VCC voltage drops because of the VCC consumption current. VCC recharge function start if VCC voltage < VCHG1 (8.7V typ)C : With the soft start function, over current limit value is restricted to prevent any excessive rise in voltage or current. D: When the switching operation starts, VOUT rises. The output voltage become to stable state, VCC voltage also become to stable state through auxiliary winding. Please set the rated voltage within the TFOLP1b period (32ms typ) from VCC voltage > VUVLO1. E: During a light load, if it reaches FB voltage < VBST (= 0.4Vtyp), the IC starts burst operation to keep power consumption low. During burst operation, it becomes low-power consumption mode. F : When the FB Voltage>VFOLP1A(=2.8V typ), it becomes a overload operation. G: When FB pin voltage keeps V FOLP1A (= 2.8V typ) at or above T FOLP (64ms typ), the overload protection function is triggered and switching stops 64mS later. If the FB pin voltage becomes FB<V FOLP1B even once, the IC’s FB OLP timer is reset. H : If the VCC voltage drops to VCC < V UVLO2 (7.7Vtyp) or below, restart is executed. I: The IC’s circuit current is reduced and the VCC pin value rises. (Same as B) |
Similar Part No. - BM2P011 |
|
Similar Description - BM2P011 |
|
|
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 |