TPS65185
- Single Chip Power-Management Solution for
E Ink® Vizplex™ Electronic Paper (E-Paper) Displays - Generates Positive and Negative Gates, and Source Driver Voltages and Back-Plane Bias From a Single, Low-Voltage Input Supply
- Supports 9.7-Inch and Larger Panel Sizes
- 3-V to 6-V Input Voltage Range
- Boost Converter for Positive Rail Base
- Inverting Buck-Boost Converter for Negative Rail Base
- Two Adjustable LDOs for Source Driver Supply
- TPS65185 LDO1: 15 V, 120 mA (VPOS)
- TPS65185 LDO2: –15 V, 120 mA (VNEG)
- TPS651851 LDO1: 15 V, 200 mA at
VIN ≥ 3.6 V (VPOS) - TPS651851 LDO2: –15 V,
200 mA at
VIN ≥ 3.6 V (VNEG)
- Accurate
Output Voltage Tracking
- VPOS – VNEG = ±50 mV
- Two Charge Pumps for Gate Driver
Supply
- CP1: 22 V, 15 mA (VDDH)
- CP2: –20 V, 15 mA, (VEE)
- Adjustable VCOM Driver for Accurate
Panel-Backplane Biasing
- 0 V to –5.11 V
- ± 1.5% accuracy (±10 mV)
- 9-Bit Control (10-mV Nominal Step Size)
- Active Discharge on All Rails
- Integrated 10-Ω, 3.3-V Power Switch for Disabling System Power Rail to E-Ink Panel
The TPS65185x device is a single-chip power supply designed to for E Ink Vizplex displays used in portable e-reader applications, and the device supports panel sizes up to 9.7 inches and greater. Two high efficiency DC-DC boost converters generate ±16-V rails that are boosted to 22 V and –20 V by two change pumps to provide the gate driver supply for the Vizplex panel. Two tracking LDOs create the ±15-V source driver supplies that support up to 120/200 mA (TPS65185/TPS651851) of output current. All rails are adjustable through the I2C interface to accommodate specific panel requirements.
Accurate back-plane biasing is provided by a linear amplifier that can be adjusted from 0 V to –5.11 V with 9-bit control through the serial interface; it can source or sink current depending on panel condition. The TPS65185x supports automatic panel kickback voltage measurement, which eliminates the need for manual VCOM calibration in the production line. The measurement result can be stored in non-volatile memory to become the new VCOM power-up default value.
TPS65185 is available in two packages, a 48-pin 7-mm × 7-mm2 VQFN (RGZ) with 0.5-mm pitch, and a 48-pin 6-mm × 6-mm2 VQFN (RSL) with 0.4-mm pitch. The TPS651851 is available in a 48-pin 6-mm × 6-mm2 VQFN (RSL) with 0.4-mm pitch.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TPS65185x PMIC for E Ink® Vizplex™ Enabled Electronic Paper Display datasheet (Rev. G) | PDF | HTML | 2017/9/21 | ||
| 應用說明 | Understanding Undervoltage Lockout in Power Devices (Rev. A) | 2018/9/19 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 技術文章 | Use PMICs to extend battery life in portable applications | PDF | HTML | 2016/9/8 |
設計與開發
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TPS65185EVM — TPS65185EVM
The TPS65185EVM is a fully assembled platform for evaluating the performance of the TPS65185 EINK display driver.
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RSL) | 48 | Ultra Librarian |
| VQFN (RGZ) | 48 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。