Texas Instruments TPS65182BRGZR

Overview

TPS65182BRGZR from Texas Instruments is a single-chip PMIC engineered specifically for E Ink® Vizplex™ electronic paper displays, integrating two adjustable LDOs (±15 V, 120 mA), dual charge pumps (VDDH: +22 V/10 mA; VEE: –20 V/12 mA), inverting buck-boost (–17 V) and boost (+17 V) DC/DC converters, I²C-controlled VCOM driver (–0.3 to –2.5 V), and thermistor-based temperature monitoring (±1°C accuracy, 0°C–50°C). It powers active-matrix e-reader panels up to 9.7 inches.

For engineers reviewing the TPS65182BRGZR datasheet, TPS65182BRGZR pinout, TPS65182BRGZR application, or TPS65182BRGZR equivalent, this device requires attention to rail sequencing (PWR0–PWR3 control), ±50 mV VPOS/VNEG tracking tolerance, thermal pad (PBKG) connection to VN, I²C slave address 0x48h, and sleep-mode wake-up timing (150 ms minimum low pulse on WAKEUP).

Technical Context

The TPS65182BRGZR implements independent GPIO-driven power sequencing via four PWRx pins controlling LDO2/VCOM (PWR0), CP2 (PWR1), LDO1 (PWR2), and CP1 (PWR3), with default startup requiring 6 ms for DCDC1/DCDC2 stabilization before enabling downstream rails. Its I²C interface (400 kHz, open-drain SDA/SCL) enables dynamic voltage adjustment, interrupt configuration, and temperature threshold programming.

Thermal management relies on the exposed PowerPad (PBKG) tied to VN, achieving R_θJA = 30.5°C/W and supporting continuous operation at –10°C to 85°C ambient. The integrated ADC monitors a 10 kΩ NTC thermistor (with 43 kΩ linearization resistor) at TS pin, delivering panel temperature readings every 60 s with ±1°C accuracy across 0°C–50°C.

Key Specifications

Pinout & Package

TPS65182BRGZR is housed in a 48-pin VQFN package (7 mm × 7 mm × 0.9 mm) with an exposed thermal pad (PBKG) that must be connected to VN for optimal heat dissipation and electrical reference.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar electronic paper display power management applications.

Compared with TPS65182BRGZR, TPS65185RSLR adds EEPROM and stronger VCOM drive but shares identical sequencing architecture and pinout; MAX17135ETJ+ offers higher voltage headroom but lacks I²C configurability and thermal monitoring, requiring external support circuitry for adaptive biasing.

Availability

TPS65182BRGZR is available at Aetrix Electronics and suitable for e-book readers, electronic shelf labels, and industrial e-paper signage requiring stable component supply, long-lifecycle support, and verified thermal performance in ambient ranges from –10°C to 85°C.

Supply support for TPS65182BRGZR 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 solutions, with over 50 years of innovation in precision power delivery and signal chain technologies.

The TPS65182x product line was designed exclusively for E Ink Vizplex electronic paper displays, integrating all necessary bias rails, sequencing logic, and thermal monitoring into a single 48-pin VQFN to simplify e-reader power architecture.

FAQ

What is the recommended thermal pad (PBKG) connection for TPS65182BRGZR?

The PBKG thermal pad on TPS65182BRGZR must be soldered to the VN net-not ground-with a wide, low-impedance copper pour. This connection serves both thermal dissipation (R_θJB = 7.1°C/W) and electrical reference for the internal buck-boost converter. Incorrect grounding causes regulation instability and thermal shutdown.

How does TPS65182BRGZR ensure VPOS and VNEG tracking accuracy?

TPS65182BRGZR guarantees ≤±50 mV difference between VPOS and VNEG outputs under load (±20 mA, 0°C–60°C) via matched internal feedback networks and shared reference architecture. This tight tracking is essential for maintaining E Ink pixel voltage integrity during partial refresh operations.

Can TPS65182BRGZR operate without I²C communication?

Yes - TPS65182BRGZR supports full functionality using only GPIO control via PWR0–PWR3 pins for rail enable/disable and WAKEUP for sleep/wake transitions. I²C is optional for voltage trimming, temperature threshold setup, and status monitoring; default voltages (±15 V, +22 V, –20 V) are factory-set.

What external components are mandatory for TPS65182BRGZR's VCOM driver?

A 4.7 µF ceramic capacitor between VCOM and AGND1, plus a 4.7 µF capacitor between VCOM_PANEL and AGND2, are mandatory. For analog VCOM adjustment, a potentiometer connects between VCOM_XADJ and AGND2; if using I²C control, VCOM_XADJ is tied to AGND2.

What is the purpose of the TS and AGND2 pins on TPS65182BRGZR?

TS and AGND2 form a dedicated thermistor interface: TS accepts the voltage divider output from a 10 kΩ NTC thermistor and 43 kΩ linearization resistor, while AGND2 provides the isolated reference ground for the internal 16-bit ADC. This pair enables ±1°C temperature measurement accuracy from 0°C to 50°C for E Ink panel thermal compensation.