1 Features

• High-efficiency DC/DC power module with

integrated transformer technology

• AEC-Q100 qualified with the following results:

– Device temperature Grade 1: –40°C to 125°C

ambient operating temperature

• Functional Safety-Capable (Documentation will be

available to aid functional safety system design)

• Input voltage: 4.5V to 5.5V

• Regulated selectable output voltage 5.0V, 5.5V

• Maxium output power of 1.5W

• Adaptive spread spectrum modulation (SSM)

• Meets CISPR32 Class B emission

• Robust isolation barrier:

– Isolation rating: 3kVRMS

– Surge capability: 6.5kVPK

– Working voltage: 1188VPK

– 200V/nS common mode transient immunity

• Strong magnetic fields immunity

• Overload and short circuit protection

• Thermal shutdown

• Low inrush current soft-start

• Enable pin with fault reporting mechanism

• 12-pin VSON-FCRLF package with > 4.2mm

creepage and clearance

• Planned Safety-related certifications:

– Basic isolation per DIN EN IEC 60747-17 (VDE

0884-17)

– 3kVRMS isolation for 1 minute per UL 1577

– UL certification per IEC 62368-1, and IEC

60601-1 end equipment standards

– CQC approval per GB4943.1-2022

2 Applications

• HV battery monitoring circuits

• Isolated bias for isolated voltage and current

sensors

• Isolated bias for digital isolators,

• Isolated bias for isolated RS-485, RS-422 and

CAN transceivers

• Isolated bias for MCU Power

3 Description

UCC33420-Q1 is an automotive qualified DC/DC

power module with 3kVRMS isolation rating designed

to provide efficient, isolated power to isolated circuits

that require a bias supply with a well-regulated output

voltage. The device integrates a transformer and

DC/DC controller with a proprietary architecture to

provide 1.5W (typical) of isolated power with low EMI.

The UCC33420-Q1 integrates protection features for

increased system robustness. The device also has an

enable pin, fault reporting mechanism, and regulated

5.0V with a selectable headrom output voltage of

5.5V. The UCC33420-Q1 is a low-profile, miniaturized

solution offered in a VSON package with 1.00mm

height (typical).