công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
MCZ5203SE bảng dữ liệu(PDF) 8 Page - Shindengen Electric Mfg.Co.Ltd |
|
MCZ5203SE bảng dữ liệu(HTML) 8 Page - Shindengen Electric Mfg.Co.Ltd |
8 / 18 page SHINDENGEN ELECTRIC MFG.CO.,LTD - 8 - Confidential 2.4 Control characteristics Voltage vs.frequency characteristics are shown in Fig.5. LLC converter operates in above-resonance region. (above ZVS boundary) Output voltage can be stabilized by varying operating frequency, decreasing the operating frequency when input voltage becomes lower or load becomes larger, and increasing when higher or smaller respectively. Fig.5 Output voltage vs operating frequency characteristics 2.5 Major parameters and components Table 1. Major parameters Vc1 IC Vcc supply 15-22Vdc is recommended.(min.14.0V for startup in worst case) Vbulkreset Brown–out detection voltage threshold Brown-out protection operating voltage. The threshold value is determined considering resonant condition and hold-up time. fmin Minimum frequency Fmin is determined considering resonant frequency at Vin min / Po max condition. fmax Maximum frequency Fmax is determined considering controllable area at Vbulk max with min load and ZVS condition. fss Startup frequency Fss is determined considering MOSFET Vds,output diode inrush current and Vout rise timing during startup tss Soft starting time Required soft starting time tTIMER Burst mode operation interval Especially important for short circuit condition and feedback loop open condition. See section 3.6 Table 2 .Recommended components RvsenseH Vbulk divider high side Isense=1uA required High voltage assured type is recommended. Ct Timing capacitor Ct determines fmin / fmax / fss / DT.Stable temperature characteristics type is recommended. In case of MLCC, type CH or COG. RocpH Current sensing filtering resistor Primary current sensing filtering resistor. Around 10 ohm is recommended. CocpL Current sensing filtering capacitor Primary current sensing filtering capacitor.1000pF-10000pF. Rfb I(F/B) limitation resistor Limiting I(F/B) and setting fmax. Normally a few k ohms. Refer to characteristic diagrams. Table 3. Circuit constants obtained from the formulas RvsenseL Vbulk divider low side Obtained from Vbulkreset and RvsenseH. Rt Timing resistor Obtained from fmin and Ct Rocpdet Sensing resistor Primary resonant current sensing RocpL OCP sensing divider Primary current sensing voltage divider Css Soft start timing capacitor Obtained from tss. Ctimer Burst operation timing capacitor Obtained from ttimer ZVS boundary Vout frequency |
Số phần tương tự - MCZ5203SE |
|
Mô tả tương tự - MCZ5203SE |
|
|
Link URL |
Chính sách bảo mật |
ALLDATASHEET.VN |
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không? [ DONATE ] |
Alldatasheet là | Quảng cáo | Liên lạc với chúng tôi | Chính sách bảo mật | Trao đổi link | Tìm kiếm theo nhà sản xuất 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 |