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IC manufacturers Navitas Semiconductor Inc

Navitas Semiconductor Inc NVE031B-A1 | Demoboard Nve031b

Overview

TopologyLLC Resonant Converter

Description

This design uses a Critical Conduction Mode (CrCM/DCM) PFC (AC-400 VDC), followed by an LLC DC-DC (400-19 VDC). For both stages, the switching frequency was increased to the maximum allowed by the off-the-shelf control ICs available. The board is designed to be a ‘demonstration’ board, and is not yet optimized as a production design. With this design, a power density of 2.18 W/cc or 35.75 W/in3 is achieved, which is around 2x typical and 40% more than the best-on-class Si-based design today. Customer designs are expected to achieve even higher power density. The PFC section is a standard ON Semi NCP1615 CrCM/DCM powering 2x NV6115 (parallel) GaNFast Power ICs directly. Critical mode PFC (also known as boundary mode) is a soft-switching topology which allows higher frequency operation. The DC-DC section uses the NCP13992 current-mode resonant controller (LLC) driving NV6115s. The NV6115s have monolithically-integrated gate drivers, so the NCP13992’s drivers are not used and loss is minimized.

Typical applications

  • LLC

Products

Order Code Data­sheet Downloads Product seriesVinVOut1
(V)
IOut1
(A)
Vaux 1
(V)
Vaux 2
(V)
fswitch
(kHz)
L1
(µH)
NPRI : NSEC : NAUXISAT1
(A)
L
(mm)
W
(mm)
H
(mm)
MountRDC 1
(Ω)
LR
(µH)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
MaterialVersionIR
(A)
L
(mH)
RDC max.
(mΩ)
VR
(V (AC))
VT
(V (AC))
L1
(µH)
IR 1
(A)
RDC1 max.
(Ω)
Samples
750317229
MID-LLCNAV Offline LLC Transformers for Navitas Semiconductor 385 - 415 V (DC) 19 8 27 9 500 190 11 : 1 : 1.5 : 1 2.3 26.5 32.1 11 THT 0.14 3000
7448030509
STE ALT EAG CAD LTS PSP IGS CAD SPAWE-CMBNC Common Mode Power Line Choke Nanocrystalline 22 13.5 25 THT THT 5 9 28 250 1500
7447018
STE ALT EAG CAD LTS PSP IGSWE-FI Leaded Toroidal Line Choke 16.5 8.5 THT 2.5 0.15 100 150 2.5 0.1
7443251600
STE ALT EAG CAD LTS PSP SPE IGS CADWE-HCI SMT Flat Wire High Current Inductor 10.5 10.2 4.7 SMT 12.7 6.5 34.5 18 Superflux SMT 5 0.016 37.95
750317297
MID-PFC Inductors for Power Factor Correction 30 0.01 77.5 7 26.5 31.2 11 THT 0.047 500
Samples
Order Code Data­sheet Downloads Product seriesVinVOut1
(V)
IOut1
(A)
Vaux 1
(V)
Vaux 2
(V)
fswitch
(kHz)
L1
(µH)
NPRI : NSEC : NAUXISAT1
(A)
L
(mm)
W
(mm)
H
(mm)
MountRDC 1
(Ω)
LR
(µH)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
MaterialVersionIR
(A)
L
(mH)
RDC max.
(mΩ)
VR
(V (AC))
VT
(V (AC))
L1
(µH)
IR 1
(A)
RDC1 max.
(Ω)
Samples

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