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Texas Instruments TPS56121 Manuals
Manuals and User Guides for Texas Instruments TPS56121. We have
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Texas Instruments TPS56121 manual available for free PDF download: User Manual
Texas Instruments TPS56121 User Manual (28 pages)
Step-Down Converter Evaluation Module
Brand:
Texas Instruments
| Category:
Motherboard
| Size: 1 MB
Table of Contents
Table of Contents
1
Introduction
3
Description
4
Applications
4
Features
4
Electrical Performance Specifications
5
Table 3-1. TPS56121EVM-601 Electrical Performance
5
Schematic
6
Figure 4-1. TPS56121EVM-601 Schematic
6
Test Setup
7
Test Equipment
7
Recommended Wire Gauge
7
Equipment Set up Procedure
8
Figure 5-1. TPS56121EVM-601 Recommended Test Setup
8
Configurations
9
Enable Selection (J3)
9
Test Point Descriptions
10
Input Voltage Monitoring (TP1 and TP2)
10
Output Voltage Monitoring (TP3 and TP4)
10
Enable/Soft-Start Monitoring (TP5)
10
Power Good Monitoring (TP6)
10
Loop Response Testing (TP7, TP8, TP9 and TP10)
10
Switch Node Voltage Monitoring (TP11 and TP12)
10
Table 7-1. Test Point Descriptions
10
Test Procedures
11
Start Up/Shut down Procedure
11
Output Ripple Voltage Measurement Procedure
11
Figure 8-1. Tip and Barrel Output Voltage Ripple Measurement
11
Control Loop Gain and Phase Measurement Procedure
12
Equipment Shutdown
12
Figure 8-2. Control Loop Measurement Setup
12
Performance Data and Typical Characteristic Curves
13
Efficiency
13
Load Regulation
13
Figure 9-1. Efficiency
13
Figure 9-2. Load Regulation
13
Line Regulation
14
Output Voltage Ripple
14
Figure 9-3. Line Regulation (VIN = 8 V to 14 V, VOUT = 1.0 V, IOUT = 15 A)
14
Figure 9-4. Output Voltage Ripple
14
Switch Node
15
Load Transient
15
Figure 9-5. Switch Node Waveform Measured at Pins Using Tip and Barrel Measurement Technique
15
Figure 9-6. Load Transient (VIN = 12 V, VOUT = 1.0 V, IOUT = 0 a to 15 A)
15
Vout = 1.0 V, Iout
15
Start up
16
Figure 9-7. Start-Up Waveform (VIN = 12 V, VOUT = 1.0 V, IOUT = 15 A)
16
Figure 9-8. Pre-Biased Start-Up Waveform (VIN = 12 V, VOUT = 1.0 V, IOUT = 0 A)
16
Power off
17
Over-Current Protection
17
Figure 9-9. Power-Off Waveform (VIN = 12 V, VOUT = 1.0 V, IOUT = 15 A)
17
Control Loop Bode Plot
18
Thermal Image
18
Figure 9-11. Loop Gain (VIN = 12 V, VOUT = 1.0 V, IOUT = 15 A, Bandwidth: 39 Khz, Phase Margin: 46°)
18
Figure 9-12. Thermal Image
18
EVM Assembly Drawings and PCB Layout
19
Figure 10-1. TPS56121EVM-601 Top Assembly Drawing (Top View)
19
Figure 10-2. TPS56121EVM-601 Bottom Assembly Drawing
19
Figure 10-3. TPS56121EVM-601 Top Copper (Top View)
20
Figure 10-4. TPS56121EVM-601 Internal
20
Figure 10-5. TPS56121EVM-601 Internal
21
Figure 10-6. TPS56121EVM-601 Bottom Copper
21
List of Materials
22
Revision History
22
Table 11-1. TPS56121EVM-601 List of Materials
22
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