SLUUBZ9 May 2020 TPS92200
This converter design describes an application of the TPS92200D1/D2 as an LED driver using the following specifications. For applications with a different input voltage range or different output voltage and current, see the TPS92200D1/D2 data sheet (SLUSER4).
Table 1 lists the electrical performance specifications.
| Parameter | Test Conditions | MIN | TYP | MAX | Units |
|---|---|---|---|---|---|
| Input voltage range, VIN | 4.0 | 30 | V | ||
| Output voltage range, VOUT | LED+ to LED–, depends on VIN | 1 | <30 | V | |
| Output current | 3.3V, 100% duty PWM input | 0.5 | A | ||
| Output current ripple | VIN = 24 V, 6 White LEDs, 1-A output current | 10 | mApp | ||
| Analog dimming range | 1.2V Analog input(TPS92200D1EVM) | 1.2 | V | ||
| Analog dimming range | 3.3-V PWM amplitude, 50 kHz(TPS92200D2EVM) | 1 | 100 | % | |
| PWM dimming range | 1.2-V PWM amplitude, 100 Hz, VIN = 24 V, 6 White LEDs, 1-A output current(TPS92200D1EVM) | 1 | 100 | % | |
| Efficiency | VIN = 12 V, 5 IR LEDs, 1.5 A output current, Analog dimming mode | 96 | % | ||
| Switching frequency | 1000 | kHz |