The TPS65166 offers a compact power supply solution to provide all voltages required by a LCD panel for large TV panel applications running from a 12V supply rail. The device is optimized to support LCD technology using ASG gate drive circuits.
The device generates all voltage rails for the TFT LCD bias (VS, VONE, VOFFE, VSS). In addition to that it includes a step-down converter (Vlogic) to provide the logic voltage. By pulling the HVS pin high an implemented high voltage stress test feature programs the boost converter output voltage Vs to higher values. The boost converter operates at a fixed switching frequency of 750kHz. The positive charge pump is running from the boost converter and is regulated by an external transistor.
|
TPS65166 |
TPS65171 |
| Vin(Min)(V) |
8.5 |
8.5 |
| Vin(Max)(V) |
14.7 |
14.7 |
| Vout(Min)(V) |
8.5 |
8.5 |
| Vout(Max)(V) |
19 |
19 |
| LDO |
1 |
1 |
| DC/DC Converter |
3 |
3 |
| Charge Pump |
1 |
1 |
| Pin/Package |
40VQFN |
40VQFN |
| Vlogic1 Ilim(Min)(A) |
Buck, 2.4 |
Buck, 1 |
| Vlogic1(Min)(V) |
2.2 |
2.2 |
| VGH / Vpos (Igh) |
External Linear Regulator |
External Linear Regulator |
| VGL / Vneg (Igl) |
External Linear Regulator |
External Linear Regulator |
| HVS |
AVDD |
AVDD |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 85 |
| Switching Frequency(Typ)(kHz) |
750 |
750 |
| AVDD Ilim(Min)(A) |
3.7 |
2.5 |
| Analog Voltage AV/DD(Max)(V) |
19 |
19 |
| Over-Voltage Protection(Max)(V) |
20 |
20 |
| Regulated Outputs(#) |
5 |
5 |
| Isolation Switch |
External |
External |
| Rating |
Catalog |
Catalog |
| Function |
Display Bias |
Display Bias |
| Topology |
Boost, Buck, Inverting Buck/Boost Bias |
Boost, Buck, Inverting Buck/Boost Bias |
| Special Function |
Shunt Regulator VGL2 |
Shunt Regulator VGL2 |
| Iq(Typ)(mA) |
1.2 |
1.2 |
| Target Application |
TV, Monitor 12V |
TV, Monitor 12V |