Where are the power supply bypass capacitors? Support Home Video Center. On the low-to-high transition a spike of the same polarity is generated by C2, preceded by a spike of the opposite polarity due to the charging of the input capacity of the lower POWER DMOS transistor fig. Below is an oscillation at the rising edge: Home Questions Tags Users Unanswered. I’ll add some decoupling capacitors near the chip and grab pictures over the whole cycle tomorrow. Andy aka k 10

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Where are the power supply bypass capacitors?

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Andy aka k 10 Compare to the signal over a whole pulse: The DMOS output transistors can operate at supply voltages up to 42V and efficiently at high switching speeds. They grew with duty cycle and were also consistent between cycles. Product is in volume production Evaluation: No commitment taken to produce Proposal: Support Home Video Center.


By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. By using mixed technology it has been possible to optimize the logic circuitry and the power stage to achieve the best possible performance.

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Not Recommended for New Design. DMOS full bridge driver.

L6203 Dual Full Bridge Motor Driver Module

When I looked at the sense resistor voltage on a scope, I noticed huge artifacts right on both the rising and falling edge of the PWM waveform. Below is an oscillation at the rising edge:. I have a hunch that this is a byproduct of the bootstrap capacitors interacting with the motor windings, because the ringing reminds me of an RLC oscillator. Please contact our sales support for information on specific devices.

L Dual Full Bridge Motor Driver Module – Aptinex

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L – DMOS Full Bridge Driver – STMicroelectronics

I suspect that it has something to do with the charge differences on the capacitor leftover from the last cycle, but that’s beyond my understanding of l62203 L ends. Whoa, I had no idea it was so sensitive to the probe setup. Can you show us the current waveform over a complete PWM cycle?

No commitment taken to design or produce NRND: Implementing fast decay mode chopping using the L You need to use this type of o-scope probing: No availability reported, please contact our Sales office.

Product is in volume production 3. Home Questions Tags Users Unanswered. My probe are p6203, hooked across one of the two sense resistors in parallel.