TPS65120 Series
4-CH Single Inductor Multiple Outputs (SIMO) Bias IC w/ Fixed 3.3V Vlogic
Manufacturer: Texas Instruments
Catalog(3 parts)
| Part | Applications | Supplier Device Package | Voltage - Input▲▼ | Voltage - Input▲▼ | Mounting Type | Number of Outputs▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Package / Case | Voltage - Output▲▼ | Voltage - Output▲▼ | Supplied Contents | Power - Output▲▼ | Outputs and Type | Outputs and Type▲▼ | Board Type | Utilized IC / Part | Contents | Current - Output▲▼ | Main Purpose | Regulator Topology | Voltage - Output▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Converter, TFT LCD | 16-VQFN (3x3) | 2.5 V | 5.5 V | Surface Mount | 4 ul | -40 °C | 85 °C | 16-VFQFN Exposed Pad | -18 V, 3 V | 5.599999904632568 V, 20 V | ||||||||||||
Texas Instruments TPS65120EVM-076TPS65120 - Special Purpose DC/DC, LCD Supply 4, Non-Isolated Outputs Evaluation Board | 2.5 V | 5.5 V | Board(s) | 0.28700000047683716 W | Non-Isolated | 4 ul, 4 ul | Fully Populated | TPS65120 | Board(s) | 0.004000000189989805 A, 0.019999999552965164 A, 0.02500000037252903 A | LCD Supply, Special Purpose DC/DC | Boost | -12 V, 3.299999952316284 V, 5 V, 12 V | |||||||||
Converter, TFT LCD | 16-VQFN (3x3) | 2.5 V | 5.5 V | Surface Mount | 4 ul | -40 °C | 85 °C | 16-VFQFN Exposed Pad | -18 V, 3 V | 5.599999904632568 V, 20 V |
Key Features
• Main Output, VMAINAdjustable Voltage, 3.0 V to 5.6 V/25 mAPost-Regulated for Low Ripple (5mVPP)±0.8% Typical AccuracyEfficiency up to 83%Positive Output, VGHAdjustable Voltage up to 20 V/2 mA±3% Typical AccuracyNegative Output, VGLAdjustable Voltage down to -18 V/2 mA±3% Typical AccuracyAuxiliary 1.8 V/3.3 V Linear RegulatorAutomatic or Programmable Power SequencingComplete 1 mm Component Profile Solution2.5 V to 5.5 V Input Voltage RangeOutput Short Circuit Protected16-Pin QFN Package (3 × 3 × 0,9 mm)APPLICATIONSSmall Form Factor a-Si and LTPS TFT LCDCell Phones, Smart PhonesPDAs, Pocket PCsPortable DVDDigital-Still Cameras, CamcordersHandheld InstrumentsPortable GPSCar Navigation SystemsMain Output, VMAINAdjustable Voltage, 3.0 V to 5.6 V/25 mAPost-Regulated for Low Ripple (5mVPP)±0.8% Typical AccuracyEfficiency up to 83%Positive Output, VGHAdjustable Voltage up to 20 V/2 mA±3% Typical AccuracyNegative Output, VGLAdjustable Voltage down to -18 V/2 mA±3% Typical AccuracyAuxiliary 1.8 V/3.3 V Linear RegulatorAutomatic or Programmable Power SequencingComplete 1 mm Component Profile Solution2.5 V to 5.5 V Input Voltage RangeOutput Short Circuit Protected16-Pin QFN Package (3 × 3 × 0,9 mm)APPLICATIONSSmall Form Factor a-Si and LTPS TFT LCDCell Phones, Smart PhonesPDAs, Pocket PCsPortable DVDDigital-Still Cameras, CamcordersHandheld InstrumentsPortable GPSCar Navigation Systems
Description
AI
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 µH inductors can be used.
The main output, VMAIN, is post-regulated to provide a low-ripple source drive voltage for the LCD display. The auxiliary outputs generate a boosted output voltage, VGH, up to 20 V, and a negative output voltage, VGL, down to -18 V for the LCD gate drive. The device has internal current limiting for high reliability under fault conditions. Additionally, the device offers a fixed output linear regulator for the LCD logic circuitry.
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 µH inductors can be used.
The main output, VMAIN, is post-regulated to provide a low-ripple source drive voltage for the LCD display. The auxiliary outputs generate a boosted output voltage, VGH, up to 20 V, and a negative output voltage, VGL, down to -18 V for the LCD gate drive. The device has internal current limiting for high reliability under fault conditions. Additionally, the device offers a fixed output linear regulator for the LCD logic circuitry.