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1 Introduction
User's Guide
SLVU194 – January 2007
Using the TPS40192EVM-001, A 12-V Input, 1.8-V Output,
10-A Synchronous Buck Converter
Contents
1 Introduction .......................................................................................... 1
2 TPS40192EVM-001 Electrical Performance Specifications ................................... 3
3 Schematic ........................................................................................... 4
4 Test Setup ........................................................................................... 7
5 TPS40192EVM Typical Performance Data and Characteristic Curves .................... 11
6 EVM Assembly Drawings and Layout .......................................................... 13
7 List of Materials .................................................................................... 16
List of Figures
1 TPS40192EVM-001 Recommended Test Setup ............................................... 9
2 Output Ripple Measurement – Tip and Barrel Using TP9 and TP10 ........................ 9
3 Control Loop Measurement Setup .............................................................. 10
4 TPS40192EVM-001 Efficiency vs Load Current, Vin = 8 V - 14 V, Vout = 1.8 V, Iout
= 0 A - 10 A ........................................................................................ 11
5 TPS40192EVM-001 Output Voltage vs Load Current, Vin = 8 V - 14 V, Vout = 1.8
V, Iout = 0 A - 10 A ............................................................................... 12
6 TPS40192EVM-001 Output Voltage Ripple, Vin = 14 V, Vout = 1.8 V, Iout = 10 A ..... 12
7 TPS40192EVM-001 Switching Waveforms, CH1: SW(TP), CH2: HDRV(TP), CH3:
LDRV(TP); Vin = 8 V, Vout = 1.8 V, Iout = 10 A ............................................. 13
8 TPS40192EVM-001 Switching Waveforms, CH1: SW(TP), CH2: HDRV(TP), CH3:
LDRV(TP); Vin = 14 V, Vout = 1.8 V, Iout = 10 A ............................................ 13
9 TPS40192EVM-001 Component Placement (Viewed From Top) .......................... 14
10 TPS40192EVM-001 Silkscreen (Viewed From Top) ......................................... 14
11 TPS40192EVM-001 Top Copper (Viewed From Top) ....................................... 15
12 TPS40192EVM-001 Bottom Copper (X-Ray View From Top) .............................. 15
13 TPS40192EVM-001 Internal 1 (X-Ray View From Top) ..................................... 16
14 TPS40192EVM-001 Internal 2 (X-Ray View From Top) ..................................... 16
List of Tables
1 Adjusting V
OUT
with R7 ............................................................................. 5
2 Adjusting V
SCP
With R9 ............................................................................ 5
3 TPS40192EVM-001 Bill of Materials ........................................................... 17
The TPS40192EVM-001 evaluation module (EVM) is a synchronous buck converter providing a fixed
1.8-V output at up to 10 A from a 12-V input bus. The EVM is designed to start up from a single supply;
so, no additional bias voltage is required for start-up. The module uses the TPS40192 reduced pin count,
mid-voltage, synchronous buck controller.
SLVU194 – January 2007 Using the TPS40192EVM-001, A 12-V Input, 1.8-V Output, 10-A Synchronous Buck Converter 1
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