1 Features

• Qualified for automotive applications

• AEC-Q100 qualified with the following results:

– Device operates from 3 V to 5.5 V input supply

– Device temperature grade 1: –40°C to +125°C

ambient operating temperature range

– Device HBM classification level 2

– Device CDM classification level C4A

• Functional Safety-Compliant

– Developed for functional safety applications

– Documentation available to aid ISO 26262

system design up to ASIL-D

– Documentation available to aid IEC 61508

system design up to SIL-3

– Systematic capability up to ASIL-D

– Hardware integrity up to ASIL-D

– Input supply voltage monitor and over-voltage

protection

– Under/overvoltage monitors and over-current

monitors on all output supply rails

– Watchdog with selectable trigger / Q&A mode

– Two error signal monitors (ESMs) with

selectable level / PWM mode

– Thermal monitoring with high temperature

warning and thermal shutdown

– Bit-integrity (CRC) error detection on internal

configuration registers and non-volatile memory

(NVM)

• Low-power consumption

– 2 μA typical shutdown current

– 7 μA typical in back up supply only mode

– 20 μA typical in low power standby mode

• Five step-down switched-mode power supply

(BUCK) regulators:

– 0.3 V to 3.34 V output voltage range in 5, 10, or

20-mV steps

– One with 4 A, three with 3.5 A, and one with 2

A output current capability

– Flexible multi-phase capability for four BUCKs:

up to 14 A output current from a single rail

– Short-circuit and over-current protection

– Internal soft-start for in-rush current limitation

– 2.2 MHz / 4.4 MHz switching frequency

– Ability to synchronize to external clock input

• Three low-dropout (LDO) linear regulators with

configurable bypass mode

– 0.6 V to 3.3 V output voltage range with 50-mV

steps in linear regulation mode

– 1.7 V to 3.3 V output voltage range in bypass

mode

– 500 mA output current capability with shortcircuit

and over-current protection

• One low-dropout (LDO) linear regulator with lownoise

performance

– 1.2 V to 3.3 V output voltage range in 25-mV

steps

– 300 mA output current capability with shortcircuit

and over-current protection

• Configurable power sequence control in nonvolatile

memory (NVM):

– Configurable power-up and power-down

sequences between power states

– Digital output signals can be included in the

power sequences

– Digital input signals can be used to trigger

power sequence transitions

– Configurable handling of safety-relevant errors

• 32-kHz crystal oscillator with option to output a

buffered 32-kHz clock output

• Real-time clock (RTC) with alarm and periodic

wake-up mechanism

• One SPI or two I2C control interfaces, with

second I2C interface dedicated for Q&A watchdog

communication

• Package option:

– 8-mm × 8-mm 56-pin VQFNP with 0.5-mm pitch

2 Applications

• Automotive infotainment and digital cluster,

navigation systems, telematics, body electronics

and lighting

• Advanced driver assistance system (ADAS)

• Industrial control and automation

3 Description

The TPS6594-Q1 device provides four flexible multiphase

configurable BUCK regulators with 3.5 A output

current per phase, and one additional BUCK regulator

with 2 A output current.