I have a uF capacitor right next to the power supply connection, and a 15uF across the supply pins to the IC. Product is in volume production 3. Media Subscription Media Contacts. Email Required, but never shown. My probe are grabbers, hooked across one of the two sense resistors in parallel.
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They grew with duty cycle and were also consistent between cycles. Cloud Components and Modules. Who We Are Management.
No commitment taken to produce Proposal: The DMOS output transistors can operate at supply voltages up to 42V and efficiently at high switching speeds. Show your probe setup. Each channel half-bridge of the device is controlled by a separate logic input, while a common enable controls both channels. Andy ful k 10 Whoa, I had no idea it was so sensitive to the probe setup.
I’ll be hooking this into a microcontroller ADC, and that -6V spike looks very unfriendly. Product is in design stage Bridye Below is an oscillation at the rising edge: Can you show us the current waveform over a complete PWM cycle? My probe are grabbers, hooked across one of the two sense resistors in parallel.
How did you measure it?
Aptinex L Dual Full bridge Motor Driver Module
bidge Distributor Name Region Stock Min. Sign up using Email and Password. I’ll add some decoupling capacitors near the chip and grab pictures over the whole cycle tomorrow.
DMOS full bridge driver. BruceAbbott I’ve added a picture of the waveform over a whole pulse, and updated the picture of the noise to match. Email Required, but never shown.
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. No availability reported, please contact our Sales office. Communications Equipment, Computers and Peripherals.
Product is under characterization.
Extracts from L data sheet: Selectors Bdidge and Models. BruceAbbott Oh shoot, good point. Product is in volume production only to support customers ongoing production. Compare to the signal over a whole pulse: Post as a guest Name. The wirewound resistors aren’t helping either madisoundspeakerstore.
L6203 Dual Full Bridge Motor Driver Module
ST Code of Conduct Blog. You need to use this type of o-scope probing: 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 the L ends.
I have a uF capacitor right next to the power supply connection, and a 15uF across the supply pins to the IC.