UCC28710DR
| Parameters | |
|---|---|
| Standard Package | 2,500 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 8-SOIC (0.154", 3.90mm Width), 7 Leads |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Voltage - Breakdown | - |
| Supplier Device Package | 7-SOIC |
| Fault Protection | Current Limiting, Over Voltage |
| Topology | Flyback |
| Voltage - Supply (Vcc/Vdd) | 9V ~ 35V |
| Control Features | - |
| Frequency - Switching | 680Hz ~ 100kHz |
| Internal Switch(s) | No |
| Voltage - Start Up | 21 V |
| Duty Cycle | - |
| Output Isolation | Isolated |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | UCC28710 |
| REACH Status | REACH Unaffected |
UCC28710DR Primary-Side Regulation (PSR) PWM Controller
The UCC28710DR is a high-efficiency, primary-side regulated (PSR) PWM controller from Texas Instruments, engineered for isolated AC/DC flyback converters without optocouplers. Housed in a compact 7-pin SOIC surface-mount package (tape-and-reel), it operates from a wide 9V to 35V supply voltage and supports an industrial temperature range of -40°C to +125°C. Part of the UCC2871x family, it integrates a 700V high-voltage startup switch to minimize standby power and simplify offline power supply designs, while its programmable cable compensation enables flexible output voltage tuning across line and load variations.
Key Features & Applications
This controller delivers constant-voltage (CV) and constant-current (CC) regulation with ±5% accuracy and operates in discontinuous conduction mode (DCM) with quasi-resonant valley switching to reduce switching losses and EMI. It features a maximum 100kHz switching frequency (supporting high power density), frequency jitter for simplified EMI compliance, and a clamped gate-drive output for robust MOSFET control.
Integrated protections include overcurrent, input undervoltage, output overvoltage, and internal overtemperature protection, along with leading-edge blanking and soft-start to enhance system reliability. Ideal for 5W–30W USB-compliant adapters/chargers, consumer electronics power supplies, LED drivers, and industrial power solutions, it eliminates optocoupler and secondary-side feedback circuitry, reducing BOM cost and PCB complexity.
Alternative PSR controller Models
● UCC28711DR: TI SOIC-7 PSR controller with fixed 0mV cable compensation and NTC temperature sensing, ideal for low-cost, temperature-stable adapter designs.
● UCC28712D: TI SOIC-7 PSR controller with 150mV fixed cable compensation and 106kHz frequency, offering balanced performance for mid-range flyback applications.
● UCC28713DR: TI SOIC-7 PSR controller with 300mV fixed cable compensation and NTC support, optimized for higher-power flyback converters requiring robust thermal management.
● onsemi NCP1014: 7-pin SOIC PSR controller with optocoupler-free operation, 100kHz frequency, and integrated 700V startup for cost-effective low-power adapters.
● STMicroelectronics VIPER17: 7-pin SOIC flyback controller with PSR, 65kHz frequency, and compact packaging, suitable for space-constrained low-power AC/DC designs.
