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TPS6291x-Q1 3V to 17V, 4.5A/6A/8A, Automotive, Low Noise and Low Ripple Buck Converter With Integrated Ferrite Bead Filter Compensation
SLVSHW9B
August 2024 – January 2025
TPS62914-Q1
,
TPS62916-Q1
,
TPS62918-Q1
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TPS6291x-Q1 3V to 17V, 4.5A/6A/8A, Automotive, Low Noise and Low Ripple Buck Converter With Integrated Ferrite Bead Filter Compensation
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
Smart Config (S-CONF)
6.3.2
Device Enable (EN/SYNC)
6.3.3
Device Synchronization (EN/SYNC)
6.3.4
Spread Spectrum Modulation
6.3.5
Output Discharge
6.3.6
Undervoltage Lockout (UVLO)
6.3.7
Power-Good Output
6.3.8
Noise Reduction and Soft-Start Capacitor (NR/SS)
6.3.9
Current Limit and Short-Circuit Protection
6.3.10
Thermal Shutdown
6.4
Device Functional Modes
6.4.1
Fixed Frequency Pulse Width Modulation
6.4.2
Low Duty Cycle Operation
6.4.3
High Duty Cycle Operation (100% Duty Cycle)
6.4.4
Second Stage L-C Filter Compensation (Optional)
7
Application and Implementation
7.1
Application Information
7.2
Typical Applications
7.2.1
Design Requirements
7.2.2
Detailed Design Procedure
7.2.2.1
Custom Design With WEBENCH® Tools
7.2.2.2
External Component Selection
7.2.2.2.1
Switching Frequency Selection
7.2.2.2.2
Inductor Selection for the First L-C Filter
7.2.2.2.3
Output Capacitor Selection
7.2.2.2.4
Ferrite Bead Selection for Second L-C Filter
7.2.2.2.5
Input Capacitor Selection
7.2.2.2.6
Setting the Output Voltage
7.2.2.2.7
Bootstrap Capacitor Selection
7.2.2.2.8
NR/SS Capacitor Selection
7.2.3
Application Curves
7.3
Power Supply Recommendations
7.4
Layout
7.4.1
Layout Guidelines
7.4.2
Layout Example
8
Device and Documentation Support
8.1
Device Support
8.1.1
Third-Party Products Disclaimer
8.1.2
Development Support
8.1.2.1
Custom Design With WEBENCH® Tools
8.2
Documentation Support
8.2.1
Related Documentation
8.3
Receiving Notification of Documentation Updates
8.4
Support Resources
8.5
Trademarks
8.6
Electrostatic Discharge Caution
8.7
Glossary
9
Revision History
10
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
RPY|14
MPQF567B
Thermal pad, mechanical data (Package|Pins)
Orderable Information
slvshw9b_oa
slvshw9b_pm
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Data Sheet
TPS6291x-Q1
3V to 17V,
4.5A/
6A
/8A
,
Automotive,
Low Noise and Low Ripple Buck
Converter
With Integrated Ferrite Bead Filter Compensation
1
Features
AEC-Q100 qualified for automotive applications:
Temperature grade 1: –40°C to +125°C, T
A
Functional Safety-Capable
Documentation available to aid functional safety system design
Low output 1/f noise < 20µV
RMS
(100Hz to 100kHz)
Low output voltage ripple < 10µV
RMS
after ferrite bead
High PSRR of > 65dB (up to 100kHz)
2.2MHz, 1.4MHz, or 1.0MHz
fixed frequency peak current mode control
Synchronizable with external clock (optional)
Integrated loop compensation supports ferrite bead for second stage L-C filter with 30dB attenuation (optional)
Spread spectrum modulation (optional)
3.0V to 17V input voltage range
0.8V
to 5.5V output voltage range
25mΩ/7mΩ R
DSon
Output voltage accuracy of ±1% over temperature
Precise enable input allows
User-defined undervoltage lockout
Exact sequencing
Adjustable soft start
Power-good output
Output discharge (optional)
–
40
°C to
150
°C junction temperature range
2.0mm × 3.0mm QFN with 0.5mm pitch
Create a custom design using the
TPS6291x-Q1
with the
WEBENCH®
Power Designer
