Features of the TPS65300-Q1

Suitable for automotive electronics applications

Has the following AEC-Q100 qualified results

Device Temperature Grade 1: -40°C to 125°C ambient operating temperature range

Device Human Body Model (HBM) Electrostatic Discharge (ESD) Classification Level H2

Device Component Charge Mode (CDM) ESD Classification Level C4B

Input VIN voltage range from 5.6V to 40V with transients up to 45V

For stability, all outputs support ceramic output capacitors

Switch-Mode Regulator with Integrated High-Side Switch

Recommended switch mode frequency range is 2MHz to 3MHz

Overcurrent Protection and 1.2A Peak Switch Current

One linear regulator with 0.8V ± 1.5%_ reference and two linear regulator controllers

Status indicator output for IGN_EN input

Soft Start on Ignition (IGN_EN) / Enable Input (EN) Cycle

External clock input for synchronization

Programmable power-on reset delay for fast negative transients, reset function filter timer

Voltage monitors for the following power supplies

VREG, 3.3V, 1.234V

Thermal Shutdown Protection Against Excessive Power Dissipation

Operating Junction Temperature Range: -40°C to 150°C

Thermally Enhanced 24-Pin Thermally Thin Small Outline (HTSSOP) Package or 24-Pin Ultra Thin Quad Flat No-Lead (VQFN) Package

Scope of application

Power Supply for TMS570 Microcontrollers

Power Supplies for C28XXX Digital Signal Processors (DSPs)

Universal Power Supplies for Automotive Applications

Microcontrollers and DSPs

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Description of TPS65300-Q1

The TPS65300-Q1 power supply is a combination of a single switch-mode step-down power supply and three linear regulators. This device is a monolithic high voltage switching regulator featuring an integrated 1.2A peak current switch, 45V power metal oxide semiconductor field effect transistor (MOSFET), and a low voltage linear regulator with two voltage Voltage Regulator Controller.

The device features a voltage supervisor to monitor switch-mode power supplies,

Output voltage for 3.3V linear regulator and 1.234V linear regulator. An external timing capacitor is used to set the power-up delay time and the release time of the reset output nRST. The reset output is also used to indicate if a switch-mode power supply, 3.3V linear regulator supply, or 1.234V linear regulator supply is outside the programmed limits. The 5V regulator tracks the 3.3V linear regulator within the specified limits.

The TPS65300-Q1 device switches between 2MHz and 3MHz, enabling the use of half-height inductors and low-value input and output ceramic capacitors. External loop compensation provides the user with the flexibility to optimize the converter response for proper operating conditions.

The device has built-in protection features such as soft-start (during IGN_EN on or enable), pulse-by-pulse current limit, thermal sensing, and shutdown on excessive power dissipation.