1 Features

• Fully integrated high-density isolated DC/DC

module with isolation transformer

• Isolated DC/DC for driving: IGBTs, SiC FETs

• Input voltage range: 8 V to 18 V with 32-V absolute

maximum

• 1.5-W output power for 10.8 V < VVIN < 13.2 V, at

TA ≤ 85 °C

• 1-W output power for 8 V < VVIN < 18 V, at TA ≤ 85

°C

• Adjustable (VDD – VEE) output voltage (with

external resistors): 15 V to 25 V, ±1.3 regulation

accuracy over full temperature range

• Adjustable (COM – VEE) output voltage (with

external resistors): 2.5 V to (VDD – VEE), ±1.3

regulation accuracy over full temperature range

• Low electromagnetic emission with spread

spectrum modulation and integrated transformer

• Enable, Power Good, UVLO, OVLO, softstart,

short-circuit, power-limit, under-voltage,

overvoltage, and over-temperature 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 available to aid functional safety

system design

• Planned safety-related certifications:

– 5657-VPK basic isolation per DIN EN IEC

60747-17 (VDE 0884-17)

– 3000-VRMS isolation for 1 minute per UL 1577

– Basic insulation per CQC GB4943.1

• 36-pin, wide SSOP package

2 Applications

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

– Inverter and motor control

– On-board (OBC) and wireless charger

– DC/DC converter

• Grid infrastructure

– EV charging station power module

– DC charging (pile) station

– String inverter

• Motor drive

– AC inverter and VF drive, robot servo drive

• Industrial transport

– Off-highway vehicle electric drive

3 Description

UCC14140-Q1 is an automotive qualified high

isolation voltage DC/DC power module designed

to provide power to IGBT or SiC gate drivers.

The UCC14140-Q1 integrates a transformer and

DC/DC controller with a proprietary architecture to

achieve high density with very low emissions. The

high-accuracy output voltages provide better channel

enhancement for higher system efficiency without

over-stressing the power device gate. The input

voltage of UCC14140-Q1 supports both wide LiFePO4

battery voltage of electric vehicle (8 V-18 V) and

regulated 12-V rail (10.8 V-13.2 V), with different

output power.

The fully integrated module with on-chip device

protection requires a minimum of external

components, and provides extra features such as

input under-voltage lockout, over-voltage lockout,

output voltage power-good comparators, overtemperature

shutdown, soft-start time-out, adjustable

isolated positive and negative output voltage, an

enable pin, and an open-drain output power-good pin.