Datasheet 3D Model

GA3172 Flyback Transformer

for the Microchip AC LED Driver

Developed for Microchip to operate with PIC16HV785 CMOS Microcontroller and MCP1402 Gate Driver
Universal AC input
12 V bias winding output powers the microcontroller

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Count	Unit price
1	$5.79
250	$4.96
500	$4.32
1000	$3.36
2500	$2.88

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Typical Application

Works with Microchip PIC16HV785

Input Voltage	Output 1		Power	Fsw
Input Voltage	Sec	Bias	Power	Fsw
85 V — 265 V	20 V , 0.7 A	12 V , 0.02 A	14 W	250 kHz

Specifications

Electrical specifications at 25°C.

Part number (Hover for schematics)	Inductance at 0A (µH) 2 (Tolerance: ±10%)	Inductance min at 0.78 A (µH)	DCR max			Leakage Inductance max (µH) 3	Turns Ratio	Isolation Voltage (Vrms) 4
Part number (Hover for schematics)	Inductance at 0A (µH) 2 (Tolerance: ±10%)	Inductance min at 0.78 A (µH)	Pri (Ω)	Sec (mΩ)	Bias (mΩ)	Leakage Inductance max (µH) 3	Pri : Sec : Bias	Isolation Voltage (Vrms) 4
GA3172-AL	500	450	0.675	245.000	325.000	8.25	1 : 0.214 : 0.131	3000

Notes

Output is for the secondary. Bias winding output is 12 V.
Inductance measured at 125 kHz, 0.1 Vrms, 0 Adc.
Leakage inductance is for the primary and is measured with the secondary shorted.
3000 Vrms, one minute isolation from the primary and bias to the secondary winding.

Termination:

RoHS-compliant. Tin-silver over tin over copper over steel terminations. Other terminations available at additional cost.

Environmental

Environmental:

RoHS compliant

Ambient temperature range:

–40°C to +85°C

Storage temperature range:

Component: –40°C to +85°C.
Packaging: –40°C to +80°C

Failures in Time (FIT) / Mean Time Between Failures (MTBF):

See FIT/MTBF Calculations

Schematics

Physical characteristics

General specification

Core Material:

Ferrite

Weight:

11.7 g

Packaging:

117 parts per tray

Washing

Moisture Sensitivity Level (MSL):

1 (unlimited floor life at <30°C / 85% relative humidity)

PCB Washing:

Only pure water or alcohol recommended.

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