MOSFET Driver Circuit Design

Thought for 9 sec

Core parts are in place. Next I am wiring the UC3825 oscillator, control loop, and the dedicated 15 V gate-driver output stage around the placed parts.

Thought

flux

Work done

Renamed the project to UC3825 MOSFET PWM Driver and updated the description for the approved PWM/gate-driver goal.
Documented the chosen architecture and timing assumptions in Design Notes.
Added the full initial schematic part set: U1 as U1, U2 as U2, timing parts R1 and C1, control potentiometers RV1 and R2, support passives R3 to R7 and C2 to C9, plus output connector J1.
Verified the placed parts and pin names for U1 and U2, and extracted key datasheet constraints for decoupling and gate-drive implementation.

Success criteria review

❌ U1 is not yet wired, so the UC3825 timing network is not implemented or verified at 10 kHz.
❌ The two potentiometers, RV1 and R2, are added but not yet connected for frequency and duty control.
❌ The gate-driver/output stage around U2 and J1 is added but not yet wired, so 0 to 15 V output operation is not established.
❌ The full schematic still needs net connections and verification.

Next steps The remaining work is to wire the full schematic: add the 15 V and ground rails, connect the UC3825 oscillator and duty-control loop, wire the U2 gate-driver stage to J1, then review the completed connections. After the schematic is complete, the natural next stage is PCB layout: board sizing, stackup, and component placement. I can continue with that once execution is available again.

15V

C10

Capacitance

0.1uF

Reviews

Generic Inductor
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700.5k

Project Name

Description

UC3825-based adjustable 10 kHz PWM generator with potentiometer frequency and duty control, plus a 0-15 V MOSFET gate-driver output stage.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor	Qty 1

Controls

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