TEXAS INSTRUMENTS TPS92550EVM/NOPB 评估模块, TPS92550EVM/NOPB
The is an evaluation board for TPS92550, a constant current buck LED driver micro module drives maximum 450mA LED current up to 10 LEDs in a single string. It integrates all the power components including the power inductor. The TPS92550 provides a full turn key , highly efficient solution for wide range of single string LED lighting applications with up to 95% power efficiency. The module has fast control loop to realize fine LED current pulse yielding 256 step PWM dimming resolution at 240Hz for general lighting. Protection features include thermal shutdown, input under voltage lockout, LED open circuit and short circuit protections. The TPS92551 micro module is available in TO PMOD 7pin power package.
- .
- Input voltage ranging from 4.5V to 36V
- .
- The LED current is adjustable from 300mA to 450mA
- .
- Constant switching frequency 400KHz
- .
- High contrast ratio minimum dimming current pulse width < 16µs
- .
- TPS92550 modules can be connected in parallel for higher current operation
- .
- Compatible with ceramic and low ESR capacitors
- .
- ±3.6% typical LED current accuracy