80R2 / 80R6 Series

Key features & specifications

TopologyOff-line active clamp forward, dual output

Power Range100–350 W · 100–360 W

Input180–400 Vin (AC off-line)

ControllerLT3752-1

Secondary ControlLT8311

Reference DesignAnalog Devices® DC1929A

TurnsInteger turns, 1T–16T

OptionsSMT · pad-to-pad · thermal pad · heat sink

FinishRoHS · Cu leads · Sn/Ag 96/4

80R2 series planar transformers for off-line active clamp forward converters, covering 180–400 Vin and 100–360 W. Dual-output versions supply two rails from one magnetic, with companion output inductors specified for each configuration. Optimised for the LT3752-1 primary controller with LT8311 secondary-side control, as used in the Analog Devices® DC1929A reference design.

Part number & parameter table

Stresses beyond values listed may cause permanent damage. Functional operation beyond any rating is not implied. All values at T<sub>amb</sub> = 25 °C unless noted.

80R2-AC — dual output, DC1929A reference designs

Part Number	Vin Min (V)	Vin Max (V)	Vout 1 (V)	Io1 (A)	Io1 max (A)	Vout 2 (V)	Io2 (A)	Io2 max (A)	Companion Inductor
80R2-AC-240202D	140	400	5	15.0	30.0	5	15.0	30.0	PQI26LF-0404-4R8
80R2-AC-240205D	140	400	5	15.0	30.0	12	6.0	10.0	PQI26R6-0410-4R8
80R2-AC-220410D	140	400	12	6.0	10.0	30	1.6	5.0	PQI26R6-1025-33R
80R2-AC-220404D	140	400	12	6.0	10.0	12	6.0	10.0	PQI26R6-1010-33R
80R2-AC-220808D	140	400	24	3.0	4.0	24	3.0	4.0	PQI26R6-2020-90R
80R2-AC-221010D	140	400	28	2.5	3.5	28	2.5	3.5	PQI26R6-2222-120R
80R2-AC-221616D	140	400	54	1.5	2.0	54	1.5	2.0	PQI26R6-2525-300R

80R2 — single output, wide-Vin off-line

Part Number	Vin Min (V)	Vin Max (V)	Vout (V)	Io (A)
80R2-5AC-3125002-1M2	150	420	5	30.0
80R2-12AC-3124005-1M2	180	400	12	16.7
80R2-15AC-3115006-1M2	180	400	15	12.5
80R2-24AC-3124010CT-1M2	150	400	24	10.0
80R2-24AC-3206CT-1M2	300	400	24	10.0
80R2-28AC-3222008	180	400	28	10.0
80R2-30AC-3208-1M2	300	400	30	8.0
80R2-24AC-3124010CT-1M2	300	400	57	3.0

Consult the Analog Devices® DC1929A reference design BOM and schematic for the exact device specified for each configuration.

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Mechanical outline & package dimensions

Family		80R2 · 80R6
Finish		RoHS · Cu leads · Sn/Ag 96/4
Options		SMT · pad-to-pad · thermal pad · heat sink

Notes

80R2 series planar transformers are designed for off-line active clamp forward converters with synchronous rectification.
The 80R2-AC dual-output parts deliver two rails from one magnetic; companion output inductors are specified per row.
Primary control is the LT3752-1 controller with LT8311 secondary-side control (Analog Devices® DC1929A reference design).
Champs responsibility is limited to its component as described in the data sheet; suitability of the reference design itself is the design responsibility of Analog Devices®.
Contact applications engineering for custom turns ratios, output combinations or mechanical variants.