SLVSGG9A
June 2023 – September 2023
TPS922052
,
TPS922053
,
TPS922054
,
TPS922055
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Revision History
5
Device Comparison Table
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Adaptive Off-Time Current Mode Control
8.3.1.1
Switching Frequency Settings
8.3.1.2
Spread Spectrum
8.3.2
Setting LED Current
8.3.3
Undervoltage Lockout
8.3.4
Internal Soft Start
8.3.5
Dimming Mode
8.3.5.1
PWM Dimming
8.3.5.2
Analog Dimming
8.3.5.3
Hybrid Dimming
8.3.5.4
Flexible Dimming
8.3.6
CC/CV Charging Mode
8.3.7
Fault Protection
8.3.8
Thermal Foldback
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
TPS922054 24-V Input, 4-A Output, 4-piece WLED Driver With Analog Dimming
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.1.2.1
Inductor Selection
9.2.1.2.2
Input Capacitor Selection
9.2.1.2.3
Output Capacitor Selection
9.2.1.2.4
Sense Resistor Selection
9.2.1.2.5
Other External Components Selection
9.2.1.3
Application Curves
9.2.2
TPS922054 48-V Input, 2-A Output, 12-piece WLED Driver with PWM Dimming
9.2.2.1
Design Requirements
9.2.2.2
Detailed Design Procedure
9.2.2.2.1
Inductor Selection
9.2.2.2.2
Input Capacitor Selection
9.2.2.2.3
Output Capacitor Selection
9.2.2.2.4
Sense Resistor Selection
9.2.2.2.5
Other External Components Selection
9.2.2.3
Application Curves
9.3
Power Supply Recommendations
9.4
Layout
9.4.1
Layout Guidelines
9.4.2
Layout Example
10
Device and Documentation Support
10.1
Receiving Notification of Documentation Updates
10.2
Support Resources
10.3
Trademarks
10.4
Electrostatic Discharge Caution
10.5
Glossary
11
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
DYY|14
MPSS114C
DMT|14
MPSS087B
DRR|12
MPSS085A
Thermal pad, mechanical data (Package|Pins)
DMT|14
QFND767
DRR|12
PPTD337
Orderable Information
slvsgg9a_oa
7.6
Typical Characteristics
V
IN
= 24 V, I
OUT
= 3 A, LED count = 2, L = 10 µH, F
SW
= 400 kHz, unless otherwise specified
Figure 7-1
Output Current vs. Input Voltage
Figure 7-3
ADIM Duty Cycle vs. CSP-CSN Voltage in Analog Dimming
Figure 7-5
Shutdown Current vs. Junction Temperature
Figure 7-7
Switching FET R
DSON
vs. Junction Temperature
Figure 7-9
ADIM/HD Threshold vs. Junction Temperature
Figure 7-11
Efficiency at 24-V Input Voltage, 4-A Output Current
Figure 7-2
Output Current vs. LED Count
Figure 7-4
PWM Duty Cycle vs. CSP-CSN Voltage in 20-kHz Hybrid Dimming
Figure 7-6
Internal LDO Output vs. Junction Temperature
Figure 7-8
VIN UVLO Threshold vs. Junction Temperature
Figure 7-10
EN/PWM Threshold vs. Junction Temperature
Figure 7-12
Efficiency at 48-V Input Voltage, 4-A Output Current