UCC28710D
| Parameters | |
|---|---|
| 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 | Tube |
| Product Status | Active |
| Base Product Number | UCC28710 |
| REACH Status | REACH Unaffected |
| Standard Package | 75 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
UCC28710D flyback controller 680Hz ~ 100kHz 7-SOIC
The UCC28710D from Texas Instruments is a constant-voltage (CV) and constant-current (CC) flyback controller that leverages primary-side regulation (PSR) to eliminate the optocoupler and TL431 feedback circuitry, significantly reducing system cost and improving reliability . This device processes feedback information directly from the auxiliary flyback winding, delivering precise output regulation of ±5% across line and load variations without secondary-side components . Housed in a compact 7-pin SOIC package, the controller integrates a 700-V start-up switch and operates over a wide VDD range of 9V to 35V, supporting an industrial temperature range from -40°C to 125°C, making it ideal for compact, cost-sensitive isolated power designs .
Selection Advantage
The UCC28710D distinguishes itself through its primary-side regulation architecture, eliminating the optocoupler and its associated failure mechanisms for enhanced long-term reliability. Unlike standard controllers, it integrates a 700-V start-up switch enabling ultra-low standby power without sacrificing start-up time or transient response . The key differentiator of this variant is programmable cable compensation, offering maximum design flexibility compared to fixed-compensation versions (UCC28711D with 0mV, UCC28712D with 300mV, UCC28713D with 150mV) . Valley-switching operation, frequency dithering for EMI compliance, and wide VDD range allowing small bias capacitors provide a complete, feature-rich solution in a minimal 7-pin SOIC footprint.
Alternative Replacements
● The UCC28710DR, the tape-and-reel packaged version of the same device for high-volume automated assembly.
● Tthe UCC28711D, featuring the same PSR architecture with NTC interface and 0mV fixed cable compensation for applications requiring direct output voltage sensing.
● The UCC28712D, offering fixed 300mV cable compensation for longer output cable applications requiring voltage drop correction.
● The UCC28730D, a zero-power standby variant with advanced wake-up monitoring for ultra-low standby applications.
● The NCP1271D100R2G from onsemi, a current-mode PWM controller with 100kHz switching frequency and soft-skip technology for enhanced light-load efficiency.
