UCC25800AQDGNRQ1
| Parameters | |
|---|---|
| Series | Automotive, AEC-Q100 |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) |
| RoHS Status | Not applicable |
| Package / Case | 8-PowerTSSOP, 8-MSOP (0.118", 3.00mm Width) |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Current - Supply | 14mA |
| Applications | Transformer Driver |
| Supplier Device Package | 8-HVSSOP |
| Voltage - Supply | 9V ~ 34V |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | UCC25800 |
| Other Names | 296-UCC25800AQDGNRQ1TR |
| Standard Package | 2,500 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
UCC25800AQDGNRQ1 transformer driver 8-HVSSOP
The UCC25800AQDGNRQ1 from Texas Instruments is an AEC-Q100 qualified, ultra-low EMI transformer driver specifically designed for isolated bias supplies in automotive systems. It integrates a high-efficiency half-bridge power stage, control logic, and comprehensive protection circuits into a single chip, simplifying the design of isolated bias rails for traction inverters, motor drives, and other automotive power stages. The driver ic operates from a wide 9 V to 34 V input supply and can deliver up to 6 W from a 24 V input and up to 9 W from a 34 V input, making it well-suited for generating local bias rails directly from the vehicle’s high-voltage battery bus while minimizing external component count.
Functionally, the UCC25800AQDGNRQ1 uses an open-loop LLC-style control scheme and allows the use of transformers with higher leakage inductance but much lower primary-to-secondary capacitance, dramatically reducing common-mode current injection and EMI. Its switching frequency is programmable from 100 kHz to 1.2 MHz, enabling the use of smaller, lower-cost magnetic components while still providing ample design margin for noise-sensitive automotive environments. The driver features automatic dead-time adjustment with maximum dead-time programming, external clock synchronization via the SYNC pin, and a fixed 1.5 ms soft-start interval to reduce inrush current during startup and fault recovery.
Alternative transformer drivers
1. LTC3166IUD#PBF (Analog Devices): A high-efficiency, synchronous step-down DC/DC controller with integrated power switches that can be configured for isolated bias applications, offering programmable frequency and robust protection for automotive power systems.
2. MAX17681ATB+ (Analog Devices): A 60 V, 2 A, synchronous step-down DC/DC regulator with integrated MOSFETs that can be adapted for isolated bias supply topologies, providing high power density and strong EMI performance.
3. LM5164QPWPRQ1 (Texas Instruments): A 65 V, 150 mA automotive-qualified Fly-Buck regulator that provides an isolated bias supply solution with integrated MOSFETs and comprehensive protection, targeting similar automotive bias applications.
