MC33PT2000 use issues(2020079)

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MC33PT2000 use issues(2020079)

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Contributor I

I am currently using this chip. For the half-bridge in the same bank, should the gate signals of his high-side boost mos and 24v mos be inverted? However, the two G-pole driving waveforms measured here are in the same phase.

I am using the peak hold mode of pt2000. I think we should use the boost voltage, which is the mos on the left, to turn on during the peak current phase. Then when the current is maintained, it is powered by 24V mos, that is, the mos on the right is turned on.

Looking forward to your support.

我目前正在使用该芯片。 对于同一排中的半桥,他的高端升压mos和24v mos的栅极信号是否应该反转? 但是,此处测量的两个G极驱动波形处于同一相位。

我是用的是pt2000的 peak hold 模式,我认为在电流的峰值阶段时,我们应该用Boost的电压,也就是左侧的mos打开。然后当电流保持阶段的时候用24V的mos供电,也就是右侧的mos打开。

期待您的支持。

Half_Bridge.PNG

 fig.1 half bridge

G-pole driving waveforms.png

 fig.2  G wave 

MC33PT2000.png

 fig.3  MC33PT2000

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Contributor I

guoweisunkhumphriRHinnenMandarmarc.paquetteAre these waveforms correct? The yellow is the current of the solenoid valve (peak-hold mode), the green is the gate drive of the mos on the boost side, and the red is the gate drive of the mos on the Vbat side.

这几个波形是否正确?黄色的是电磁阀的电流(peak-hold 模式),绿色的是boost侧的mos的栅极驱动,玫红色的是Vbat侧的mos的栅极驱动。

wave2.jpg

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NXP TechSupport
NXP TechSupport

Hi

I will reply to your according your case#00262455

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