6.1 Overview

The TPS659038-Q1 and TPS659039-Q1 device are integrated power management integrated circuits (PMIC), both available in a 169-pin, 0.8-mm pitch, 12-mm x 12-mm nFBGA package. They are designed specifically for automotive applications. Both devices provide seven configurable step-down converter rails, with the ability to combine power rails and supply up to 9 A of output current in multi-phase mode. The TPS659038-Q1 device also provides eleven external LDOs, while the TPS659039-Q1 device provides six external LDOs. Both devices also come with a 12-bit GPADC with three external channels, eight configurable GPIOs, two I²C interface channels or one SPI interface channel, real-time clock module with calendar function, PLL for external clock sync and phase delay capability, and programmable power sequencer and control for supporting different processors and applications.

The seven step-down converter rails are consisting of nine high frequency switch mode converters with integrated FETs. They are capable of synchronizing to an external clock input and supports switching frequency between 1.7 MHz and 2.7 MHz. The SMPS12 and SMPS45 devices are dual-phase step-down converters, which can combine with the SMPS3 or SMPS7 device respectively and become triple-phase converters. In addition, the SMPS12, SMPS45, SMPS6, and SMPS8 device support dynamic voltage scaling by a dedicated I²C interface for optimum power savings.

The TPS659038-Q1 device contains 11 LDO regulators while the TPS659039-Q1 device contains six LDO regulators for external use. All of the LDOs support 0.9 V to 3.3 V output with 50-mV step. The devices are fully controllable by the I²C interface and can be supplied from either a system supply or a preregulated supply.

All LDOs and step-down converters can be controlled by the SPI or I²C interface, or by power request signals. In addition, voltage scaling registers allow transitioning the SMPS to different voltages by SPI, I²C, or roof and floor control.

The power-up and power-down controller is configurable and programmable through OTP. The TPS65903x-Q1 devices include a 32-kHz RC oscillator to sequence all resources during power up and power down. In cases where a fast start up is required, a 16-MHz crystal oscillator is also included to quickly generate a stable 32-kHz for the system. The device also includes an RTC module which provides date, time, calendar, and alarm capability, which is best utilized when a 16-MHz crystal or an external and high accuracy 32-kHz clock is present.

Eight Configurable GPIOs with multiplexed feature are available on the TPS659038-Q1 and TPS659039-Q1 devices. Three of the GPIOs, together with the REGEN1 pin can be configured and used as enable signals for external resources, which can be included into the power-up and power-down sequence. Both devices also include a general-purpose (GP) sigma-delta analog-to-digital converter (ADC) with three external input channels, which can be used as thermal or voltage and current monitors.