UCC34141-Q1 - 1.5W 5kVRMS Isolated DC/DC Module | TI
MPN: UCC34141-Q1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.5 | $9.50 |
| 10 | $8.55 | $85.50 |
| 100 | $7.6 | $760.00 |
| 500 | $6.9 | $3,450.00 |
| 1,000 | $6.2 | $6,200.00 |
UCC34141-Q1 Overview
An isolated DC/DC converter is a power conversion circuit that produces a regulated output while maintaining galvanic isolation between input and output grounds. Isolation is essential where safety standards or large ground-potential differences demand separation, such as gate-driver bias for high-voltage SiC and IGBT switches. The UCC34141-Q1 belongs to the isolated power module family, which integrates transformer, switching elements, and control into one package, cutting board space and system BOM versus discrete flyback designs.
Key features include TIs proprietary integrated planar transformer with IsoShield multichip packaging, wide input range with at least 0.6W typical output for 6V to 7V VIN and at least 0.5W at VIN = 5.5V (TA up to 85C), and regulated dual outputs - typically VDD = 18V and VEE = -5V - sensed through FBVDD and FBVEE feedback pins for precise gate-driver bias.
The high power density and low-noise control architecture eliminate bulky external isolation transformers, making the part especially attractive in very-high-voltage applications where isolation-rated transformers are large and expensive. The module is AEC-Q100 qualified and operates from -40C to +125C for harsh automotive and industrial environments.
Typical applications include isolated bias supplies for SiC/IGBT gate drivers in automotive traction inverters, on-board chargers, DC fast-charging infrastructure, and industrial motor drives.
Design tip: maintain PCB creepage/clearance around the isolation barrier and provide thermal copper area, since the module dissipates power internally. The UCC34141EVM-116 evaluation module supports this part and accepts the pin-to-pin 2W variant UCC35341-Q1 for higher power needs.
Drop-in alternatives for UCC34141-Q1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
UCC35341-Q1
✅ Drop-In📋 Reference alternative (not in catalog)
UCC34141DQDHARQ1
✅ Drop-In📋 Reference alternative (not in catalog)
UCC34141-Q1 Maximum Ratings & Electrical Characteristics
| Function | Isolated DC/DC power module (gate driver bias) |
| Output Power | 1.5 W |
| Input Voltage Range | 5.5 V to 20 V |
| Input Overvoltage Lockout | 22 V |
| Output Current | 75 mA (15V to 20V output per DigiKey listing) |
| Isolation Rating | > 5 kVRMS (reinforced isolation) |
| Typical Output Configuration | Dual: VDD = 18 V, VEE = -5 V |
| Low-Input Derating | >= 0.6 W for 6V <= VIN <= 7V; >= 0.5 W at VIN = 5.5V (TA <= 85C) |
| Integrated Transformer | Yes (isolation planar transformer) |
| Package | 16-SO-MOD |
| Operating Temperature | -40C to +125C |
| Qualification | AEC-Q100 automotive qualified |
| Feedback Pins | FBVDD, FBVEE |
| Mounting Type | Surface Mount |
| Evaluation Module | UCC34141EVM-116 |
| Packaging Technology | TI IsoShield multichip |
| Primary Applications | SiC / IGBT isolated gate driver bias |
UCC34141-Q1 16-so-mod Pin Configuration Guide
Pin configuration for UCC34141-Q1 (16-so-mod package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for UCC34141-Q1.
Refer to the datasheet for full pin configuration.
Typical Applications
UCC34141-Q1 is suitable for 6 applications: Automotive Traction Inverter Gate Driver Bias, On-Board Charger (OBC) Bias Supplies, Industrial Motor Drives, DC Fast-Charging Infrastructure, Solar String Inverters, Grid-Tied Energy Storage Systems (ESS).
Automotive Traction Inverter Gate Driver Bias
The UCC34141-Q1 fits traction inverter SiC/IGBT gate driver bias because its >5kVRMS reinforced isolation withstands the extreme common-mode dv/dt of 800V-class bus switching, and its 18V/-5V dual output matches gate turn-on/off requirements. Placed one per half-bridge driver, the integrated planar transformer replaces bulky discrete flyback transformers, and AEC-Q100 qualification with -40C to +125C operation satisfies automotive under-hood reliability requirements.
Recommended
On-Board Charger (OBC) Bias Supplies
In on-board chargers, the UCC34141-Q1 provides isolated bias for gate drivers on the high-voltage PFC and DC/DC stages. Its 5.5V-to-20V input accepts automotive 12V rails directly, and the regulated 1.5W output with 75mA capability supports one or two isolated gate drivers. Because the transformer is integrated, the bias supply occupies minimal board area on densely packed OBC power stages, reducing system BOM versus discrete transformer solutions.
Recommended
Industrial Motor Drives
Industrial variable-frequency drives use the UCC34141-Q1 to bias isolated gate drivers across the isolation barrier from control ground to power-stage emitters. The >5kVRMS reinforced isolation handles high-side floating potentials, while the low-noise control architecture minimizes coupling of switching ripple into gate rails. Compared with discrete flyback bias supplies, the integrated-module approach shortens design time and removes custom transformer sourcing and safety-qualification effort.
Recommended
DC Fast-Charging Infrastructure
DC fast chargers stack many SiC/IGBT power modules, each requiring isolated bias with high isolation withstand. The UCC34141-Q1 delivers 1.5W per gate driver from a common 12V aux rail, and its compact 16-SO-MOD footprint allows one module per switch position. The 22V OVLO protects against aux-rail transients, and the -40C to +125C range covers outdoor cabinet environments. For positions needing more bias power, the pin-compatible 2W UCC35341-Q1 drops in without redesign.
Recommended
Solar String Inverters
Solar string inverters benefit from the UCC34141-Q1 as gate-driver bias on high-side switches of boost and inverter stages. The wide 5.5V-to-20V input tolerates auxiliary-rail variation from startup to full load, and the regulated output keeps SiC gate voltage within the tight window SiC MOSFETs demand. The integrated isolation transformer meets the reinforced-isolation creepage intent of inverter safety designs without a custom magnetic, accelerating certification and production ramp.
Recommended
Grid-Tied Energy Storage Systems (ESS)
In battery energy storage converters, the UCC34141-Q1 biases isolated gate drivers on bidirectional DC/DC and inverter bridges. Its >5kVRMS isolation and low-noise regulation maintain gate-signal integrity amid heavy switching transients, and the compact module density allows bias scaling across many switch positions in rack-mounted power stages. The AEC-Q100-grade construction provides the robustness ESS designers typically borrow from automotive-qualified components for field reliability.
Recommended
Recommended Products Summary
Engineering reference data for UCC34141-Q1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | UCC35341-Q1 | UCC34141DQDHARQ1 | UCC33420 |
|---|---|---|---|---|
| Package | 16-SO-MOD | 16-SO-MOD - same | 16-SO-MOD - same | VSON-12 (4.0 x 5.0 mm) - different |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| AEC-Q100 Qualification | Qualified | Qualified (-Q1) | Qualified | Not qualified (industrial grade) |
| Drop-in Compatibility | Reference | Pin-to-pin drop-in | Identical device (ordering PN) | Not drop-in (different package) |
Key Differentiators
- Integrated planar transformer eliminates external magnetics (vs UCC25800-Q1)
- Automotive AEC-Q100 qualification (vs UCC33420)
- Pin-compatible 2W upgrade path (vs UCC35341-Q1)
Design Notes
Maintain the datasheet-specified creepage and clearance distances across the isolation barrier in the PCB layout. Do not route any signal or copper under the isolation region of the 16-SO-MOD package; keep both primary and secondary ground planes separated per reinforced-isolation spacing rules to preserve the >5kVRMS rating in the end application.
The module dissipates switching and transformer losses internally. Provide thermal copper area on both primary and secondary sides per the UCC34141EVM-116 reference layout, and verify junction temperature stays within limits at worst-case VIN = 5.5V (lowest input = highest input current) and TA up to 125C, noting the reduced 0.5W-0.6W output derating at low VIN for TA <= 85C.
Do not exceed the 22V OVLO threshold; add input TVS protection on automotive 12V rails subject to load dump. Use the FBVDD and FBVEE feedback pins exactly as the datasheet network specifies to keep the 18V/-5V dual outputs regulated; omitting or miswiring feedback degrades regulation and gate-drive margins.
Compliance Information
AEC-Q100 qualified per TI product page. RoHS/lead-free status per standard TI automotive product offering; verify on TI.com quality pages for certificate specifics.
