Texas Instruments TPS7H4010EVM, Руководство пользователя

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User’s Guide
TPS7H4010EVM User's Guide
ABSTRACT
The TPS7H4010-SEP (Space Enhanced Plastic) evaluation module (EVM) with orderable part number
TPS7H4010EVM, is designed to help customers evaluate the performance of the TPS7H4010-SEP synchronous
step-down voltage converter. The EVM contains two independent buck converter circuits, each of which contains
the TPS7H4010-SEP which is in the 30-pin wettable flanks QFN (WQFN) package. The two circuits deliver very
accurate output voltages at 1.8 V and 3.3 V with up to 6 A current capacity with exceptional efficiency in a very
small solution size. The EVM provides multiple power connectors and test points, as well as mode setting and
enable input options, allowing for flexibility in testing.
Table of Contents
1 Introduction ............................................................................................................................................................................. 3
1.1 TPS7H4010 Space Enhanced Plastic Evaluation Module................................................................................................. 3
1.2 TPS7H4010-SEP Synchronous Step-Down Voltage Converter......................................................................................... 3
1.3 TPS7H4010-SEP Evaluation Module................................................................................................................................. 4
2 Quick Start ............................................................................................................................................................................... 6
3 Detailed Descriptions ............................................................................................................................................................. 7
4 Schematic .............................................................................................................................................................................. 10
5 Board Layout ......................................................................................................................................................................... 12
6 Bill of Materials ..................................................................................................................................................................... 17
7 TPS7H4010EVM Test Data .................................................................................................................................................... 19
7.1 TPS7H4010EVM PVIN=5 V, VOUT=1.8 V, FSW=500 kHz.............................................................................................. 19
7.2 TPS7H4010EVM PVIN=12 V, VOUT=3.3 V, FSW=500 kHz............................................................................................ 23
List of Figures
Figure 1-1. TPS7H4010EVM....................................................................................................................................................... 3
Figure 1-2. TPS7H4010-SEP Pin Configuration (30-Pin WQFN Package Top View).................................................................. 4
Figure 1-3. TPS7H4010-SEP Schematic..................................................................................................................................... 4
Figure 1-4. TPS7H4010-SEP Package Marking.......................................................................................................................... 5
Figure 4-1. TPS7H4010EVM PVIN=5 V, VOUT=1.8 V Schematic............................................................................................ 10
Figure 4-2. TPS7H4010EVM PVIN=12 V, VOUT=3.3 V Schematic.......................................................................................... 11
Figure 5-1. Top Layer and Silkscreen Layer.............................................................................................................................. 12
Figure 5-2. Top Layer Routing................................................................................................................................................... 13
Figure 5-3. Mid-Layer 1 Ground Plane...................................................................................................................................... 14
Figure 5-4. Mid-Layer 2 Routing................................................................................................................................................ 15
Figure 5-5. Bottom Layer Routing.............................................................................................................................................. 16
Figure 7-1. PVIN=5 V, VOUT=1.8 V, FSW=500 kHz: VOUT vs IOUT....................................................................................... 19
Figure 7-2. PVIN=5 V, VOUT=1.8 V, IOUT=6 A, FSW=500 kHz: Loop Response ................................................................... 20
Figure 7-3. PVIN=5 V, VOUT=1.8 V, FSW=500 kHz: Transient Response to current step from 2 A to 6 A at 1 A/us............... 20
Figure 7-4. PVIN=5 V, VOUT=1.8 V, FSW=500 kHz: Transient Response to current step from 6 A to 2 A at 1 A/us............... 21
Figure 7-5. PVIN=5 V, VOUT=1.8 V, IOUT=6 A, FSW=500 kHz: Output Voltage Ripple.......................................................... 21
Figure 7-6. PVIN=5 V, VOUT=1.8 V, IOUT=6 A, FSW=500 kHz: Soft Start.............................................................................. 22
Figure 7-7. FSW=500 kHz: Efficiency vs IOUT.......................................................................................................................... 22
Figure 7-8. PVIN=12 V, VOUT=3.3 V, FSW=500 kHz: VOUT vs IOUT..................................................................................... 23
Figure 7-9. PVIN=12 V, VOUT=3.3 V, IOUT=6 A, 3 A, 1 A, FSW=500 kHz: Loop Response .................................................. 24
Figure 7-10. PVIN=12 V, VOUT=3.3 V, FSW=500 kHz: Transient Response to current step from 2 A to 6 A at 1 A/us........... 24
Figure 7-11. PVIN=12 V, VOUT=3.3 V, FSW=500 kHz: Transient Response to current step from 6 A to 2 A at 1 A/us........... 25
Figure 7-12. PVIN=12 V, VOUT=3.3 V, IOUT= 6 A, FSW=500 kHz: Output Voltage Ripple..................................................... 25
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