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.