The TPS6512x DC-DC converter supplies all three voltages required by amorphous-silicon (a-Si) and low-temperature poly-silicon (LTPS) TFT-LCD displays. The compact layout of the TPS6512x uses a single inductor to generate independently-regulated positive and negative outputs. A free-running variable peak current PWM control scheme time-multiplexes the inductor between outputs. This control architecture operates at a pseudo-fixed-frequency to provide fast response to line and load transients while maintaining a relatively constant switching frequency and high efficiency over a wide range of input and output voltages. Due to the high switching frequency capability of the device, inexpensive and ultra-thin 8.2 or 10 uH inductors can be used.
| TPS65120 | TPS65121 | TPS65123 | TPS65124 | |
| Vin(Min)(V) | 2.5 | 2.5 | 2.5 | 2.5 |
| Vin(Max)(V) | 5.5 | 5.5 | 5.5 | 5.5 |
| Vout(Min)(V) | 3 | 3 | 3 | 3 |
| Vout(Max)(V) | 5.6 | 5.6 | 5.6 | 5.6 |
| LDO | 1 | 1 | 1 | 1 |
| DC/DC Converter | 3 | 3 | 3 | 3 |
| Pin/Package | 16QFN | 16QFN | 16QFN | 16QFN |
| Vlogic1 Ilim(Min)(A) | LDO Controller | LDO Controller | ||
| Vlogic1(Min)(V) | Fixed 3.3V | Fixed 1.8V | ||
| VGH / Vpos (Igh) | Integrated 20V Max., 6mA | Integrated 20V Max., 6mA | Integrated 20V Max., 6mA | Integrated 20V Max., 6mA |
| VGL / Vneg (Igl) | Inverter -18V Max., 6mA | Inverter -18V Max., 6mA | Inverter -18V Max., 6mA | Inverter -18V Max., 6mA |
| Operating Temperature Range(°C) | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 |
| Switching Frequency(Typ)(kHz) | 4000 | 4000 | 4000 | 4000 |
| AVDD Ilim(Min)(A) | 7.5mA / 25mA | 7.5mA / 25mA | 7.5mA / 25mA | 7.5mA / 25mA |
| Analog Voltage AV/DD(Max)(V) | 5.6 | 5.6 | 5.6 | 5.6 |
| Regulated Outputs(#) | 4 | 4 | 4 | 4 |
| Isolation Switch | Internal | Internal | Internal | Internal |
| Rating | Catalog | Catalog | Catalog | Catalog |
| Function | Display Bias | Display Bias | Display Bias | Display Bias |
| Topology | Boost, Inverting Buck/Boost | Boost, Inverting Buck/Boost | Boost, Inverting Buck/Boost | Boost, Inverting Buck/Boost |
| Special Function | Adjustable Sequencing | |||
| Duty Cycle(Max)(%) | 100 | 100 | 100 | 100 |
| Iq(Typ)(mA) | 0.181 | 0.181 | 0.181 | 0.181 |
| Target Application | Small Form Factor | Small Form Factor | Small Form Factor | Small Form Factor |
| 器件 | 状态 | 温度 (oC) | 价格（美元） | Quantity | 封装 | 引脚 | 封装数量 | 封装载体 | 丝印标记 |
| TPS65121RGTR | ACTIVE | -40 to 85 | 0.95 | 1ku | QFN (RGT) | 16 | 3000 | LARGE T&R | BKA |
| TPS65121RGTRG4 | ACTIVE | -40 to 85 | 0.95 | 1ku | QFN (RGT) | 16 | 3000 | LARGE T&R | BKA |
| TPS65121RGTT | ACTIVE | -40 to 85 | 1.10 | 1ku | QFN (RGT) | 16 | 250 | SMALL T&R | BKA |
| TPS65121RGTTG4 | ACTIVE | -40 to 85 | 1.10 | 1ku | QFN (RGT) | 16 | 250 | SMALL T&R | BKA |
| 器件 | 环保计划* | 铅/焊球涂层 | MSL 等级/回流焊峰 | 环保信息与无铅 (Pb-free) | DPPM / MTBF / FIT 率 |
| TPS65121RGTR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | TPS65121RGTR | TPS65121RGTR |
| TPS65121RGTRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | TPS65121RGTRG4 | TPS65121RGTRG4 |
| TPS65121RGTT | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | TPS65121RGTT | TPS65121RGTT |
| TPS65121RGTTG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | TPS65121RGTTG4 | TPS65121RGTTG4 |
| 名称 | 型号 | 公司 | 工具/软件类型 |
| TPS65121 评估模块 | TPS65121EVM | Texas Instruments | 开发电路板/EVM |
| TPS65121 评估模块 | TPS65121EVM-030 | Texas Instruments | 开发电路板/EVM |
| TPS65121 评估模块 | TPS65121EVM-076 | Texas Instruments | 开发电路板/EVM |