Schematic Component Sourcing

Input Fuse

Peak primary is 3.4A, so maybe set 5A limit? The chip already has some amount

Current Sensing Resistor

@Liam Sky

Yes needed, since it would be nice to limit the current.

Shunt resistor must be rated to trip at 35mV (datasheet) at current limit (6A), so find something near R = 5.83 Ohms

Voltage Divider Network

@Liam Sky

Spec to 12.5V - 13V

Secondary Rectifying Fet Network

@Jonathan Xie

TPH3R70APL,L1Q: 3.7mOhm RDSon, VGSth = 3.5V, 100V, 90A,

Datasheet specifies ‘6mOhm RSD_on is appropriate for 20V 5A’, and at least 100V fet for 12V designs

Rectifying Diodes

@Jonathan Xie

US1D-A: 1A Diode, DO-214AC-SMA for low current applications (almost everything) (filter)

STPS30170DJF-TR: 30A Diode (for secondary side) (Filter)

Primary Clamp Cap

Bottlenecked by measuring primary leakage inductance

Primary Overvoltage Zener

Not needed because all of BMS exists and the IC is rated for like >>200 V

Secondary Overvoltage Zener

@Liam Sky

Zener should have breakdown voltage of around 1.25*Vout - 4.5 = 11.125 V

Output Caps

@Liam Sky

https://www.digikey.ca/en/products/detail/cornell-dubilier-knowles/SLP153M025C4P3/1881947

https://www.digikey.ca/en/products/detail/samsung-electro-mechanics/CL21A226MAYNNNE/10479857

https://www.digikey.ca/en/products/detail/860010473011/732-8634-1-ND/5728590?curr=usd&utm_campaign=buynow&utm_medium=aggregator&utm_source=octopart

Copy from old DCDC :))))

BPP Cap

@Liam Sky

Done

Value given in datasheet.

U/OV Protection

@Liam Sky

Done

Value given in datasheet

Secondary Bypass Pin Cap

@Liam Sky

Done

Value given in datasheet

FWD Pin Resistor

@Liam Sky

Done

Value given in datasheet