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add opamp for precise HV setting #11

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gkasprow opened this issue Feb 7, 2025 · 2 comments
Open

add opamp for precise HV setting #11

gkasprow opened this issue Feb 7, 2025 · 2 comments

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@gkasprow
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gkasprow commented Feb 7, 2025

  • add opamp for precise HV setting - the ADJ input of the converter is non-linear. DC/DC input is reversed, 0 means max, 5V means min voltage.

Originally posted by @gkasprow in #1
@gkasprow
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gkasprow commented Feb 7, 2025

don't use DAC to control ADJ directly
use HV_U_MEAS as feedback, and opamp output connect to ADJ terminal
add compensation network: 10k in series with 10u || 100nF

@filipswit
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Added IC5 and jumper to disable slew rate control

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@gkasprow @filipswit