TPS43330-Q1

or

TPS43332-Q1

VBuckA

VBuckB

VBAT

2 V

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Reference

Design

TPS43330-Q1, TPS43332-Q1

SLVSA82F – MARCH 2011 – REVISED DECEMBER 2014

1 Features

2 Applications

1

•

Qualified for Automotive Applications

•

Automotive Start-Stop, Infotainment, Navigation

Instrument Cluster Systems

•

AEC-Q100 Qualified With the Following Results:

•

Industrial and Automotive Multi-Rail DC Power

–

Device Temperature Grade 1: –40°C to 125°C

Distribution Systems and Electronic Control Units

Ambient Operating Temperature

–

Device HBM ESD Classification Level 2

3 Description

–

Device CDM ESD Classification Level C4B

The

TPS43330-Q1

and

TPS43332-Q1

devices

•

Two Synchronous Buck Controllers

(TPS4333x-Q1)

include

two

current-mode

synchronous buck controllers and a voltage-mode

•

One Pre-Boost Controller

boost controller. The TPS4333x-Q1 family of devices

•

Input Range up to 40 V, (Transients up to 60 V),

Operation Down to 2 V When Boost is Enabled

requirements and for applications that must survive

•

supply drops due to cranking events. The integrated

(Two Bucks On)

boost controller allows the devices to operate down to

2 V at the input without seeing a drop on the buck

•

regulator output stages. At light loads, the buck

•

Buck Output Range 0.9 V to 11 V

controllers can be enabled to operate automatically in

•

Boost Output Selectable: 7 V, 10 V, or 11 V

low-power mode, consuming just 30 µA of quiescent

•

Programmable Frequency and External

current.

Synchronization Range 150 kHz to 600 kHz

The buck controllers have independent soft-start

•

Separate Enable Inputs (ENA, ENB)

capability

and

power-good

indicators.

Current

foldback in the buck controllers and cycle-by-cycle

•

Frequency Spread Spectrum (TPS43332)

current limitation in the boost controller provide

•

Selectable Forced Continuous Mode or Automatic

external

MOSFET

protection.

The

switching

Low-Power Mode at Light Loads

frequency can be programed over 150 kHz to 600

•

Sense Resistor or Inductor DCR Sensing

kHz or synchronized to an external clock in the same

range. Additionally, the TPS43332-Q1 device offers

•

Out-of-Phase Switching Between Buck Channels

frequency-hopping spread-spectrum operation.

•

Peak Gate-Drive Current 1.5 A

•

Thermally Enhanced 38-Pin HTSSOP (DAP)

Device Information(1)

PowerPAD™ Package

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS43330-Q1

HTSSOP (38)

12.50 mm × 6.20 mm

TPS43332-Q1

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

4 Typical Application Diagram

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.