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參數(shù)資料
| 型號： | XC9502B3AR |
| 廠商： | TOREX SEMICONDUCTOR LTD. |
| 英文描述： | 2ch. Step-up / down DC/DC Controller ICs |
| 中文描述： | 2通道。升壓/降壓DC / DC控制器芯片 |
| 文件頁數(shù)： | 11/43頁 |
| 文件大小： | 2485K |
| 代理商： | XC9502B3AR |
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11/43
XC9502
Series
NOTES ON USE
2. PWM/PFM Automatic Switching
If PWM/PFM automatic switching control is selected and the step-up ratio is low (e.g., from 4.5V to 5.0V) or the
step-down ratio is high (e.g., from 10.0V to 1.0 V), the control mode remains in PFM setting in the whole load range,
since the duty ratio under continuous-duty condition is smaller than the PFM duty ratio of the XC9502 series. The
output voltage's ripple voltage becomes substantially high under heavy load conditions, with the XC9502 series
appearing to be producing an abnormal oscillation. If this operation becomes a concern, set pins PWM1 and PWM2 to
High to set the control mode to PWM setting. For use under the above-mentioned condition, measured data of
PWM/PFM automatic switching control shown on the data sheets are available up to I
OUT
= 100 mA.
1.Checking for Intermittent Oscillation
The XC9502 series is subject to intermittent oscillation in the proximity of the maximum duty if the step-down ratio is low
(e.g., from 4.2 V to 3.3 V) or a heavy load is applied where the duty ratio becomes high. Check waveforms at EXT under
your operating conditions. A remedy for this problem is to raise the inductance of coil L or increase the load capacitance
C
L
.
3. Ratings
Use the XC9502 series and external components within the limits of their ratings.
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| XC9502B093AL | 2ch. Step-up / down DC/DC Controller ICs |
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| XC9502B095AL | 2ch. Step-up / down DC/DC Controller ICs |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XC9503 | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:2ch Step-down DC/DC Controller ICs |
| XC9503_1 | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:2ch.Step-Down DC/DC Controller ICs |
| XC9503B092 | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:2ch Step-down DC/DC Controller ICs |
| XC9503B092A | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:2ch Step-down DC/DC Controller ICs |
| XC9503B092AL | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:2ch Step-down DC/DC Controller ICs |
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