1 Features

? Fully integrated high-density isolated DC/DC

module with isolation transformer

? Isolated DC/DC for driving: GaN and SiC

MOSFETs

? > 1.5-W output power at TA = 105 °C

? > 1-W output power for 10 V < VVIN < 18 V at TA =

105 °C

? Input voltage range: 10 V to 18 V with 32-V

absolute maximum

? Adjustable (VDD – VEE) output voltage (with

external resistors): 10 V to 18 V, ±1.3 over full

temperature range

? Adjustable (COM – VEE) output voltage (with

external resistors): from 2.5 V to (VDD – VEE),

±1.3 over full temperature range

? Low electromagnetic emissions

? Enable, Power Good, UVLO, OVLO, UVP,

OVP, soft-start, short-circuit, power-limit, and overtemperature

protection

? CMTI > 150 kV/μs

? AEC-Q100 qualified for automotive applications

– Temperature grade 1: –40°C ≤ TJ ≤ 150°C

– Temperature grade 1:–40 °C ≤ TA ≤ 125°C

? Functional safety capable

– Documentation will be available to aid

functional safety system design

? 36-pin, wide SSOP package

? Planned safety-related certifications:

– 7071-VPK isolation per DIN V VDE V

0884-11:2017-01

– 5000-VRMS isolation for 1 minute per UL 1577

– CQC approval per GB4943.1-2011

2 Applications

? Hybrid, electric and power train system (EV/HEV)

– Inverter and motor control

– On-board (OBC) and wireless charger

– Automotive DC/DC converter

? Grid infrastructure

– EV charging station power module

– DC charging (pile) station

– String inverter

? Motor drives

? Industrial Transport

? Merchant Server PSU

3 Description

UCC14131-Q1 is a high isolation voltage DC/DC

module designed to provide power to GaN or SiC

MOSFET gate drivers. The module integrates a

transformer and DC/DC controller with a proprietary

architecture to achieve high density with very low

emissions. It creates a well regulated isolated 12-V

output from a 12-V regulated input for driving GaN

and Si MOSFET power stages. It can also be used

for creating a well regulated isolated 18-V output from

a 15-V regulated input to bias the driver circuit for

SiC MOSFET or IGBTs. A 3.55-mm profile makes it

an ideal solution for achiving a high power density

system design .

The UCC14131-Q1 has a wide input voltage range

(10 V to 18 V) and wide output voltage programmable

range (10 V to 18 V). With a well regulated input

voltage (12 V or 15 V), it provides > 1.5 W (typical)

of isolated output power at high efficiency for 12-

V or 15-V output. With wider input voltage range,

it can deliver >1W of output power. Requiring a

minimal number of external components and including

on-chip device protection, the module provides

extra features such as input under-voltage lockout,

over-voltage lockout, output voltage PowerGood

comparators, over-temperature shutdown, soft-start

timing, adjustable isolated positive and negative

output voltage, an enable pin, and an open-drain

output PowerGood pin.