SECO-LVDCDC3064-SIC-GEVB：6-18 Vdc input isolated SiC gate driver supply +20V/-5V/5V with automotive grade NCV3064 controller evaluation board

The SECO-LVDCDC3064-SIC-GEVB is an isolated supply for SiC drivers, providing the necessary stable voltage rails -5 V / 20 V for an efficient switching—as well as an additional 5 V rail—over a wide input voltage range (6 Vdc to 18 Vdc). The converter is implemented as a primary side regulated flyback, with the feedback loop signal (1.25 V) realized via an auxiliary winding regulated at 5V and a voltage divider. The design leverages the several merits of the NCV3064 regulator, enabling a low component count, compact and robust design. Among the features of this converter stand out—e.g. an internal temperature compensated reference, a controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. The board is realized with Automotive qualified parts and is pin compatible with commercial SiC DC/DC supplies, provisioning a ready to use plug-in solutions for power applications.

CollateralNCV3064
SECO-LVDCDC3064-IGBT-GEVB
SECO-GDBB-GEVB

Features and Applications


Features
Core Part—NCV3064 (Automotive) / NCP3064 (Industrial)
Switching Frequency 150 kHz
Input Voltage 6-18 VDC
Output Voltage 5 V / 5 V / 20 V
Operation Mode DCM and CCM
Output Current 50 mA (for each Branch)
Efficiency at Full Load 67%
Size 26.24 x 16.38 x 16.06 mm
Transformer Basic Parameters
Interwinding Capacitance 6.4 pF
Dielectric Insulation 4000VAC
Inductance 42 μH
Leakage Inductance 650 nH






Applications
Isolated SIC Driver Supply
Automotive Powertrain Systems
Automotive Auxiliary Power