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參數(shù)資料
| 型號(hào)： | MB3817PFV |
| 廠商： | FUJITSU LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | PLASTIC, SSOP-16 |
| 文件頁數(shù)： | 20/29頁 |
| 文件大?。?/td> | 240K |
| 代理商： | MB3817PFV |
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20
MB3817
I
METHOD OF SETTING THE DEAD TIME
When the device is set for step-up inverted output based on the flyback method, the output transistor is fixed to
a full-on state (ON-duty = 100 %) at power switch-on. To prevent this problem, you may determine the voltages
on the DTC terminals (pin 6) from the V
REF
voltage so you can easily set the output transistor’s dead time
(maximum ON-duty) independently for each channel as shown below.
When the voltage on the DTC terminals (pin 6) is lower than the triangular-wave output voltage from the oscillator,
the output transistor turns off. The dead time calculation formula assuming that triangular-wave amplitude
0.4 V and triangular-wave minimum voltage
1.4 V is given below.
Duty (ON)
MAX
When you do not use these DTC terminals, connect them to V
REF
terminal.
..Vdt – 1.0 V
0.4
×
100 [%]
16 V
REF
6
DTC
Ra
Rb
Vdt
16 V
REF
6
DTC
When using DTC to set dead time
When not using DTC to set dead time
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MB3817 | ECONOLINE: REC5-S_DRW(Z)/H4,H6 - Safety standards and approval: EN 60950 certified, rated for 250VAV (LVD test report)- Applied for Ul 1950 Component Recognised Certification- 5W DIP Package- 4kVDC & 6kVDC Isolation- Regulated Output- Continuous Short Circiut Protection Auto-Restarting |
| MB3821 | 2-ch DC/DC Converter IC With Synchronous Rectifier |
| MB3821PFV | 2-ch DC/DC Converter IC With Synchronous Rectifier |
| MB3825A | 6-ch DC/DC Converter IC With Synchronous Rectifier |
| MB3825 | 6-ch DC/DC Converter IC With Synchronous Rectifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB3817PFV-G-BND(E1) | 制造商:Fujitsu 功能描述: |
| MB3821 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:2-ch DC/DC Converter IC With Synchronous Rectifier |
| MB3821PFV | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:2-ch DC/DC Converter IC With Synchronous Rectifier |
| MB3821PFV-G-BND(E1) | 制造商:Fujitsu 功能描述: |
| MB3825 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:6-ch DC/DC Converter IC With Synchronous Rectifier |
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