UCC12040
SNVSBO5B – DECEMBER 2019 – REVISUEDCMCA1Y22004201
www.ti.com
SNVSBO5B – DECEMBER 2019 – REVISED MAY 2021
UCC12040 High-Density, Low-EMI, 3-kVRMS Basic Isolation DC/DC Module
1 Features
2 Applications
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High-density DC/DC module with optimized
integrated transformer technology
Input voltage range: 4.5 V to 5.5 V
Output voltages (selectable): 5.4 V, 5.0 V, 3.7 V,
3.3 V
Output power: 500 mW
Peak efficiency: 60%
Line regulation (typical): 1%
Load regulation (typical): 1.5%
Meets CISPR32 Class B EMI limits without ferrite
beads on a 2-layer PCB
Spread spectrum modulation (SSM)
Robust isolation barrier:
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PLC analog input & output modules
Grid protection relays & smart breakers
Medical patient monitors
Isolated bias for digital isolators
Isolated bias for RS-485/RS-422/CAN transceivers
Isolated bias for voltage and current sensors
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3 Description
UCC12040 is a DC/DC power module with 3-kVRMS
basic 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 500 mW
(typical) of isolated power with low EMI.
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– Isolation rating: 3 kVRMS
– Surge capability: 6.5 kVPK
– Working voltage: 850 VRMS
– CMTI (typical): ±100 V/ns
Short circuit recovery
Thermal shutdown
16-pin wide-body SOIC package with > 8-mm
creepage and clearance
Extended temperature range: –40°C to 125°C
Safety-related certifications:
– 5657-VPK basic isolation per DIN V VDE V
0884-11:2017- 01
The UCC12040 integrates protection features for
increased system robustness. The device also has an
enable pin, synchronization capability, and regulated
5-V or 3.3-V output options with headroom. The
UCC12040 is a low-profile, miniaturized solution
offered in a wide-body SOIC package with 2.65-mm
height.
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Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
UCC12040
DVE SOIC (16)
10.30 mm × 7.50 mm
– 3000-VRMS isolation for 1 minute per UL 1577
– UL certification per IEC 60950-1, IEC 62368- 1
and IEC 60601-1 end equipment standards
– CQC approval per GB4943.1-2011
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
70
60
50
40
30
VINP
VISO
GNDS
SEL
ON
CIN
COUT
EN
OFF
GNDP
SYNC
SYNC_OK
20
VISO = 5.4 V
VISO = 5.0 V
VISO = 3.7 V
VISO = 3.3 V
Simplified Application
10
0
0
20
40
60 80
Load Current (mA)
100
120 140
D021
VINP = 5.0 V
TA = 25°C
Typical Efficiency vs. Load
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
Product Folder Links: UCC12040
Copyright © 2021 Texas Instruments Incorporated
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