Datasheet 3D Model

RA6992-BL SMT Planar Transformer

for Texas Instruments UCC2897

Developed for TI UCC2897 Active Clamp Forward (PMP9656 Reference Design)
Provides 0.009 inch (0.229 mm) clearance above the seating plane

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Typical Application

Works with Texas Instruments UCC2897

Input Voltage	Output	Power
48 V — 60 V	12 V , 21 A	250 W

Specifications

Electrical specifications at 25°C.

Part number (Hover for schematics)	Inductance at 0A (µH) 1 (Tolerance: ±20%)	DCR max 2			Leakage Inductance max (µH) 3	Turns Ratio	Volt-time product (V-µs) 4	Isolation Voltage (Vrms) 5
Part number (Hover for schematics)	Inductance at 0A (µH) 1 (Tolerance: ±20%)	Pri (mΩ)	Sec (mΩ)	Aux (mΩ)	Leakage Inductance max (µH) 3	Pri : Sec : Aux	Volt-time product (V-µs) 4	Isolation Voltage (Vrms) 5
RA6992-BL	50	6.9	4.2	82.0	0.25	1 : 0.5 : 0.5	206	1500

Notes

Inductance measured on an Agilent/HP 4284 at 200 kHz, 0.5 Vrms, 0 Adc with windings connected in parallel.
DCR for primary is measured with the windings connected in parallel. DCR for secondary is measured between pins 7 and 11.
Leakage inductance is for the primary with windings connected in parallel, measured at 200 kHz, 0.5 Vrms, 0 Adc with all secondary pins shorted.
Volt-time product is based on primary windings connected in parallel.
1500 Vrms, one minute isolation (hipot) from primary to secondary.

Termination:

RoHS-compliant 260°C compatible. Matte tin over nickel over brass terminations.

Environmental

Environmental:

RoHS compliant

Ambient temperature range:

–40°C to +85°C

Storage temperature range:

Component: –40°C to +125°C
Tray packaging: –40°C to +80°C

Maximum part temperature:

+125°C (ambient + temp rise)

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

See FIT/MTBF Calculations

Schematics

Primary windings to be connected
in parallel on the PC board.

Physical characteristics

General specification

Core Material:

Ferrite

Weight:

26.5 g

Packaging:

25 per tray

Soldering/Washing

Moisture Sensitivity Level (MSL):

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

Resistance to soldering heat:

Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles

Refer to Soldering Coilcraft Components before soldering.

PCB Washing:

Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

RA6992-BL SMT Planar Transformer

for Texas Instruments UCC2897

Typical Application

Specifications

Termination:

Schematics

Physical characteristics

General specification

Soldering/Washing

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Warehouses

Language settings

Currency settings

RA6992-BL SMT Planar Transformer

for Texas Instruments UCC2897

Selected configuration not available

Typical Application

Specifications

Termination:

Schematics

Physical characteristics

General specification

Soldering/Washing

Related product series

Magnetics

B0860-CL Planar Transformer

C1539-AL Planar Transformer

DA2025-AL Planar Transformer

HA3648-BL Planar Transformer

HA4000-AL Planar Transformer

JA4309 Planar Transformer

Magnetics for

B0853-AL SMT Planar Transformer

A9786-AL Planar Magnetics

MA5519-AL Planar Transformer

NA5738-DL SMT Planar Transformer

NA5871-AL 800 W Planar Transformer

PA6605-AL Planar Transformer

PL140 Series

PL160 Series

PL300 Series

RA6998 Forward Mode Planar Transformer

RA6999-AL Forward Mode Transformer

RA7040-AL Forward Mode

YA9215-AL 50 W Resonant Transformer

Warning