Application guide

Power-supply stages

Explore switching, isolated measurement and auxiliary-rail components for equipment power supplies.

3 functional blocks6 components for evaluationCompare all parameters ↓

Explore the system

Component building blocks

01Power switching2 components 02Isolated current and voltage sensing2 components 03Auxiliary power rails2 components

Functional blocks for selection; device connections and component values depend on your design.

FUNCTION / 01

Power switching

Evaluate the listed SiC MOSFETs for the converter switching stage. Blocking voltage, losses and thermal design depend on the actual bus and topology.

BISM36C65 650 V SiC MOSFETPackage: TO-247-3 BIM12C120 SiC MOSFETsPackage: TO-247-3/4

FUNCTION / 02

Isolated current and voltage sensing

Measure shunt-current or divided-voltage signals across an isolation boundary using the corresponding amplifier function.

BIGF1300PM Isolated current sensingPackage: SOIC8 (wide body)BIGF1311PM Isolated voltage sensingPackage: WB-SOIC-8

FUNCTION / 03

Auxiliary power rails

Generate local controller and analog rails with step-down conversion and LDO regulation. Match the input range and current to the rail.

BIW54302PMC 28 V input step-down DC/DC converterPackage: TSOT23-6 BIW3042PM1C 200 mA LDO regulatorPackage: DFN-10

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Electrical parameters & cross references

All handbook parameters for the components shown above. Scroll each table horizontally to view every column.

SiC MOSFETs

BI Part Number	Cross Reference	Function	BVDSS (V)	Drain current (A)	On resistance (Ω)	Gate threshold min (V)	Gate threshold max (V)	Package
BISM36C65	SCTWA36N65	650 V SiC MOSFET	650	36	0.08	3	5	TO-247-3
BIM12C120	NTBG014N120M3P	SiC MOSFETs	1200	90	0.025	1.5	3.5	TO-247-3/4

Isolated Amplifiers

BI Part Number	Cross Reference	Function	Supply voltage (V)	Input current (mA)	Input voltage (V)	Initial fixed gain	Analog output voltage	Analog input voltage	Common-mode transient immunity (kV/µs)	Package
BIGF1300PM	AMC1300	Isolated current sensing	-0.5–6.5	±10	(GND1−6) V to 6.5 V	8.2	(GND2−0.5) V to (VDD2+0.5) V	—	—	SOIC8 (wide body)
BIGF1311PM	AMC1311	Isolated voltage sensing	-0.3–6.5	±10	—	1	—	(GND1−6) V to (VDD1+0.5) V	±150	WB-SOIC-8

Buck Converters

BI Part Number	Cross Reference	Function	Rectification	Input voltage (V)	Output voltage (V)	Output current (A)	Quiescent current (mA)	Switching frequency (kHz)	Efficiency (%)	Package
BIW54302PMC	—	28 V input step-down DC/DC converter	Synchronous	4.5–28	ADJ(VFB=0.6V)	3	0.14	500	90	TSOT23-6

Low-dropout Regulators

BI Part Number	Cross Reference	Function	Input voltage (V)	Output voltage (V)	Initial accuracy	Output current (A)	Ripple rejection	Quiescent current (mA)	Package
BIW3042PM1C	LT3042	200 mA LDO regulator	~20V	1.5–15	±1%	0.2	92dB@10kHz	4	DFN-10

Selection based on documented BI component functions. Cross references are comparison aids and do not establish drop-in compatibility or transfer another manufacturer’s qualification.