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Texas Instruments TPS65181BRGZR
- Part No.:
- TPS65181BRGZR
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
TPS65181BRGZR.pdf
- Description:
- IC PWR MGMT E INK 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,192
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Product details
Overview
TPS65181BRGZR from Texas Instruments is a highly integrated PMIC designed specifically for E Ink® Vizplex™ electronic paper displays, generating ±15-V LDO outputs (VPOS/VNEG), ±22-V/–20-V charge-pump rails (VDDH/VEE), adjustable VCOM bias (–0.3 V to –2.5 V), and 3.3-V system power-all from a single 3 V to 6 V input. It supports panel sizes up to 9.7 inches in e-book readers and EPD systems.
For engineers reviewing the TPS65181BRGZR datasheet, TPS65181BRGZR pinout, TPS65181BRGZR application, or TPS65181BRGZR equivalent, key selection criteria include its I²C-programmable rail sequencing, ±50-mV VPOS–VNEG tracking accuracy, automatic 60-s temperature monitoring, thermally enhanced 48-pin VQFN package, and compatibility with EPSON S1D13522/S1D13521 timing controllers.
Technical Context
The TPS65181BRGZR implements dual DC–DC conversion: a boost converter (DCDC1) generating +17 V base rail (boosted to +22 V via CP1), and an inverting buck-boost converter (DCDC2) generating –17 V base rail (inverted to –20 V via CP2). Its two tracking LDOs (LDO1/LDO2) regulate ±15 V at up to 120 mA each with ±1% output tolerance and <50 mV inter-rail mismatch.
It integrates an 8-bit programmable VCOM driver (±1.5% accuracy, 11-mV step), I²C slave interface (0x48h), open-drain nINT and PWR_GOOD signals, thermistor-based temperature sensing (±1°C from 0°C to 50°C), and four independent enable pins (PWR0–PWR3) for flexible power-up sequencing-enabling precise control of gate/source/VCOM/3.3-V rails in EPD panel biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 6 V - powers entire system from single Li-ion or regulated supply without external pre-regulation |
| VPOS / VNEG Output | ±15 V, 120 mA - supplies source drivers for active-matrix E Ink panels with ±50-mV tracking guarantee |
| VDDH / VEE Output | +22 V @ 10 mA / –20 V @ 12 mA - provides gate driver voltage after charge-pump boosting of DCDC rails |
| VCOM Adjustment Range | –0.3 V to –2.5 V, 8-bit control - enables fine-tuned backplane bias for grayscale stability across panel batches |
| I²C Address | 0x48h - allows multi-device bus configuration without address conflict in stacked EPD controller designs |
| Operating Temperature | –10°C to +85°C - supports consumer e-reader operation in real-world ambient conditions |
| Thermal Shutdown | 150°C trip, 20°C hysteresis - protects device during sustained high-load or poor PCB thermal design |
Pinout & Package
TPS65181BRGZR uses a thermally enhanced 48-pin VQFN (RGZ) package (7.0 mm × 7.0 mm × 0.9 mm) with exposed PowerPAD (PBKG) tied to VN for efficient heat dissipation. The package supports high-current DC–DC switching and precision analog functions in compact EPD designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main input supply rail | Accepts 3 V–6 V system input; powers digital core, LDOs, and DC–DC controllers |
| VPOS / VNEG | LDO output terminals | Deliver ±15 V at up to 120 mA each for panel source driver ICs |
| VDDH_DRV / VEE_DRV | Charge pump driver outputs | Drive external flying capacitors to generate +22 V / –20 V gate supply rails |
| VCOM / VCOM_PANEL | VCOM bias output and panel connection | VCOM delivers adjustable backplane voltage; VCOM_PANEL connects directly to display electrode |
| SCL / SDA | I²C serial interface | Enable full rail configuration, sequencing, fault readback, and VCOM/temperature register access |
| PWR0–PWR3 | Independent rail enable inputs | Hardware-controlled activation of VCOM, VNEG, VEE, and VDDH rails without I²C overhead |
| nINT / PWR_GOOD | Open-drain status outputs | nINT signals faults (thermal, UVLO, rail fault); PWR_GOOD indicates all four main rails are in regulation |
| TS | Thermistor input | Connects 10-kΩ NTC + 43-kΩ linearization resistor for ±1°C panel temperature measurement |
Key Features
| Feature | Design Value |
|---|---|
| Auto-sequenced power-up | Configurable PWR_SEQ registers define strict enable order (e.g., VCOM before VPOS) to prevent panel latch-up |
| Integrated VCOM switch | 15-mA max current, 20–35 Ω RDS(on) - isolates VCOM driver from panel during sleep, reducing leakage |
| 60-second auto-temperature update | TPS65181B variant (including TPS65181BRGZR) autonomously reads TS pin every 60 s-no host polling required |
| Accurate rail tracking | VPOS–VNEG ≤ ±50 mV ensures balanced source driver swing, critical for E Ink waveform fidelity |
| Thermally optimized layout | Exposed PBKG pad tied to VN_SW node - routes high-current inverting buck-boost return path while enhancing thermal transfer |
Applications
| E-Book Reader Power System | EPD-Based Industrial Label |
|---|---|
Use Scenario: Powering 6-inch or 7.8-inch E Ink Carta™ display in battery-operated e-reader with OMAP processor. IC Role / Device Role / Timing Role: Single-chip EPD bias generator providing synchronized VPOS/VNEG, VDDH/VEE, VCOM, and 3.3-V logic rail with I²C-managed sequencing. Use Value: Eliminates discrete DC–DC + LDO + charge pump solution, reducing BOM count by >12 components and PCB area by 35%. | Use Scenario: Driving 2.13-inch tri-color E Ink display in warehouse asset tag with ST microcontroller and S1D13521 timing controller. IC Role / Device Role / Timing Role: Panel-specific bias manager delivering –1.8 V VCOM, ±15 V source, and –20 V gate with Broadsheet protocol support. Use Value: Enables accurate grayscale rendering via 8-bit VCOM tuning and maintains <50-mV VPOS–VNEG tracking across temperature drift. |
| Electronic Shelf Label (ESL) | Medical Handheld Reader |
Use Scenario: Ultra-low-power 2.9-inch monochrome ESL using intermittent refresh cycles and coin-cell backup. IC Role / Device Role / Timing Role: Low-quiescent (130 µA standby, 2.8 µA sleep) PMIC enabling deep-sleep between updates while retaining rail configuration. Use Value: Extends battery life beyond 5 years by minimizing idle current and supporting hardware-triggered wake-up via WAKEUP pin. | Use Scenario: Sterilizable handheld reader with 4.3-inch E Ink display requiring medical-grade thermal monitoring and fault logging. IC Role / Device Role / Timing Role: Integrated temperature sensor (±1°C accuracy) and interrupt-driven fault reporting (nINT) for IEC 62304 compliance. Use Value: Replaces external ADC + comparator + supervisor IC, simplifying safety-critical design verification and reducing test points. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EPD power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65181BRTVR | Same RGZ package, identical electrical specs, but RTV = 3-mm × 3-mm DSBGA - 67% smaller footprint, lower thermal mass | Targeted at space-constrained wearables or ultra-thin e-readers where 7×7 mm VQFN is prohibitive | Select TPS65181BRTVR only when board area is primary constraint and thermal derating can be managed via layout |
| TPS65185RSLR | Higher VDDH output (+25 V), extended VCOM range (–3.0 V), added 5-V boost channel - not pin-compatible | Supports newer E Ink Kaleido³ and Gallery color panels requiring higher gate voltage and wider VCOM swing | Choose TPS65185RSLR for next-gen color EPD designs; TPS65181BRGZR remains optimal for monochrome Vizplex legacy panels |
Compared with TPS65181BRTVR, TPS65181BRGZR offers superior thermal performance in high-refresh-rate applications due to its larger copper-exposed pad; compared with TPS65185RSLR, it provides tighter cost and footprint optimization for established Vizplex-based products without requiring additional gate drive headroom.
Availability
TPS65181BRGZR is available at Aetrix Electronics and suitable for e-book reader power systems, electronic shelf label (ESL) deployments, and medical handheld EPD interfaces requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for TPS65181BRGZR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with over 50 years of innovation in energy-efficient IC design.
The TPS6518x family was engineered exclusively for E Ink® Vizplex™ electronic paper displays, addressing the unique sequencing, tracking, and low-power requirements of bistable reflective panels in portable consumer and industrial devices.
FAQ
What is the primary function of the TPS65181BRGZR in an E Ink display system?
The TPS65181BRGZR serves as a complete power management IC for E Ink® Vizplex™ displays, generating all required bias voltages: ±15-V source driver rails (VPOS/VNEG), +22-V/–20-V gate driver supplies (VDDH/VEE), adjustable VCOM (–0.3 V to –2.5 V), and a 3.3-V system rail. Its integrated sequencing, tracking, and temperature monitoring eliminate the need for multiple discrete regulators in EPD applications.
Does the TPS65181BRGZR support automatic temperature monitoring without host intervention?
Yes-the TPS65181BRGZR (as part of the TPS65181B variant) automatically updates the panel temperature reading every 60 seconds via its integrated thermistor interface (TS pin), storing the value in the TMST_VALUE register. This eliminates the need for continuous host polling, reducing firmware overhead in battery-powered e-readers and ESLs.
How does the TPS65181BRGZR ensure voltage matching between VPOS and VNEG rails?
The TPS65181BRGZR guarantees VPOS–VNEG ≤ ±50 mV across load and temperature by implementing precision tracking circuitry between its two LDOs. This tight matching is essential for maintaining waveform symmetry in E Ink displays, preventing image retention and ensuring consistent grayscale response during partial refreshes.
Can the TPS65181BRGZR be used with EPSON S1D13521 (Broadsheet) timing controllers?
Yes-the TPS65181BRGZR supports both EPSON S1D13522 (ISIS) and S1D13521 (Broadsheet) timing controllers. Its I²C interface includes Broadsheet protocol compatibility, and its PWR0–PWR3 enable pins align with Broadsheet's hardware sequencing requirements for VCOM, VNEG, VEE, and VDDH activation.
What thermal management features does the TPS65181BRGZR include for high-current operation?
The TPS65181BRGZR incorporates a thermally enhanced 48-pin VQFN (RGZ) package with an exposed PowerPAD (PBKG) electrically connected to the VN_SW node. When routed to a wide copper plane tied to the inverting buck-boost output, this pad reduces junction-to-board thermal resistance to 7.1°C/W, enabling reliable 120-mA LDO and 160-mA DC–DC operation at +85°C ambient.
TPS65181BRGZR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- E Ink®, Vizplex™
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- E Ink®, Vizplex™ Display, OMAP™
- Current - Supply:
- 5.5mA
- Voltage - Supply:
- 3V ~ 6V
- Operating Temperature:
- -10°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-VQFN (7x7)
TPS65181BRGZR FAQ
1.How can I place an order for TPS65181BRGZR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65181BRGZR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS65181BRGZR reliable?
The price and inventory of TPS65181BRGZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65181BRGZR is usually 5 days.
3.What payment methods are accepted for TPS65181BRGZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65181BRGZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65181BRGZR?
TPS65181BRGZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65181BRGZR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS65181BRGZR?
For technical support, including TPS65181BRGZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65181BRGZR requirements.
6.How does Aetrix verify that TPS65181BRGZR is sourced from the original manufacturer or authorized distributors?
All TPS65181BRGZR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS65181BRGZR meets industry standards.
7.What is the process for return or replacement of TPS65181BRGZR?
All TPS65181BRGZR units undergo pre-shipment inspection (PSI). If there is an issue with TPS65181BRGZR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS65181BRGZR part is unused and in its original packaging.
Return procedure for TPS65181BRGZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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