参数资料
型号: L6730
厂商: STMICROELECTRONICS
元件分类: 稳压器
英文描述: 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
封装: HTSSOP-20
文件页数: 16/52页
文件大小: 1569K
代理商: L6730
L6730 - L6730B
Device description
Doc ID 11938 Rev 3
23/52
There is an electrical network between the output terminal and the FB pin and therefore the
voltage at this pin is not a perfect replica of the output voltage. If the converter can sink
current, in the most of cases the low-side will be turned on before the output voltage
exceeds the over-voltage threshold because the error amplifier will throw off balance in
advance.
Even if the device does not report an overvoltage event, the behavior is the same because
the low-side is turned on immediately. Instead, if the sink mode is disabled, the low-side will
be turned on only when the overvoltage protection (OVP) operates and not before because
the current can not be reversed. In this case, a delay between the output voltage rising and
FB voltage rising can appear and the OVP can turn on late. Figure 17 and Figure 18 show
an overvoltage event in the cases of the sink being enabled or disabled. The output voltage
rises with a slope of 100 mVs, emulating the breaking of the high-side MOSFET as an
overvoltage occurs.
Figure 16.
OVP latched
LGate
OSC
FB
相关PDF资料
PDF描述
L6730B 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
L6730TR 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
L6732CTR 20 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
L6732 SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
L6732TR SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
相关代理商/技术参数
参数描述
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