TPS43340-Q1_15 Datasheet, PDF (1/44 Pages) Texas Instruments – Quad-Output Power Supply

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TPS43340-Q1
SLVSB16E – NOVEMBER 2011 – REVISED DECEMBER 2015
TPS43340-Q1 Low-I_Q, 30-µA, High-V_IN Quad-Output Power Supply
1 Features
2 Applications
•1 Qualified for Automotive Applications
• AEC-Q100 Test Guidance With the Following
Results:
– Device Temperature Grade 1: –40°C to 125°C
Ambient Operating Temperature
– Device HBM ESD Classification Level H1C
– Device CDM ESD Classification Level C3B
• Input Range up to 40 V, (Transients up to 60 V)
• Input Voltage Range: 4 V to 40 V
– Transients up to 60 V
• Dual-Output Synchronous Buck Controller
– Peak Gate Drive Current 0.6 A
– Automatic Low-Power Mode Operation
– Low-Power-Mode I_Q : 30 µA (One Buck On),
35 µA (Two Bucks On)
• Low Shutdown Current, I_sh = 5 μA Typical
• Single Synchronous Buck Regulator Converter
BUCK3
– Max Output Current 2 A
• Linear Regulator LREG1
• Separate Enable Inputs (EN1, EN2, EN3, EN4)
• Internal Oscillator, Programmable via External
Resistor, 150 kHz to 600 kHz for Switching
Frequency f_{SW_BUCK1,2,3}
• Integrated PLL, External Synchronization
Frequency: 150 kHz to 600 kHz
• Switch-Mode Regulators Operate With 180°
Phase-Shift
• Reset Output for All Output Rails
• Supply and Overvoltage Detection and Shutdown
• Thermally Enhanced PowerPAD™ Package
– 48-Pin HTQFP (PHP)
• Automotive Infotainment, Head Unit, Navigation,
Audio and Clusters
• Advanced Driver Assistance System (ADAS)
• Automotive and Industrial Multi-Rail DC Power
Distribution Systems
3 Description
The TPS43340-Q1 is a quad rail power supply
featuring two synchronous Buck Controller with 0.6-A
gate drive, one synchronous 2-A Buck Converter and
a 300-mA LDO with low quiescent current. The
device is designed to power the entire system
including MCU and DSP straight from the car battery
respectively input voltages up to 40 V. The device
features integrated short-circuit and overcurrent
protection on the gate-drive outputs for the buck
regulator controllers and independent current-
foldback control for each buck regulator supply during
regulator output short to ground. Each output supply
incorporates a soft start to ensure that on initial power
up these regulated outputs are not in current limit.
Implementation of reset delay on power up allows the
outputs of Buck1, Buck2, Buck3 and the linear
regulator to get to stable regulation. An external
capacitor sets the delay to a maximum range of 300
ms. Each power-supply output has adjustable output
voltage based on the external resistor-network
settings. The device has sequencing control during
power up and power down of the output rails, based
on the enable-and-disable control or soft start.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS43340-Q1
HTQFP (48)
7.00 mm × 7.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
V_LREG1
V_OUT1
TPS43340-Q1
V_OUT2
V_OUT3
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.