LDM
This video shows the reverse engineering of a Russian electronic board. The reference of the board is "TDCK". It is the power supply board of a satellite communication receiver used in several Russian missiles.
We can can this receiver in a Tornado-C missile for instance (Торнадо-С).
Video: • Cистема навигации РСЗО "Торнадо-С"
00:00 - Intro
00:04 - Overview
05:08 - Reverse engineering part 1: overall description
06:07 - part 2: 12V DC-DC converter
09:05 - part 3: voltage monitor circuits
13:14 - part 4: 3.3V and 5.0V DC-DC converters
13:57 - part 5: DC-DC converters shutdown circuits
16:00 - part 6: standby power supply
Errata:
Due to an error during reverse engineering the networks Diode-Resistor-Capacitor are actually snubbers connected in parallel to each transformer primary. Nothing is connected to the gate of the MOSFETs.
Notes:
Most parts are US or European parts. It is obvious that Russia don't have the modern technology to design such board with their own parts.
Russian parts:
The toroidal transformer
The 10A fuse
Maybe the electrochemical capacitor
Main parts used on this power supply:
UCC28084 (Texas) PWM controller for the 12V power supply
TPS54356 and TPS54357 (Texas) PWM controllers for 3.3V and 5V Power Supplies
MAX974 (Analog Devices) Quad comparators with internal voltage reference
IRF7328 (Infineon) dual P-channel MOSFET
MJD112 (ON Semi) NPN Darlington
FDS4488 (On Semi) N-channel MOSFET
IRFR5305 (Infineon) P-channel MOSFET
SI4156 (Vishay) N-channel MOSFET
Weird things:
The grid of one unused MOSFET is left open
What is the purpose of the fuse ? What will happen to the missile if the fuse blows ?