Texas Instruments TPS40130EVM-001, Руководство пользователя

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User's Guide
SLUU208 – October 2004
12-V Input, 1.5-V Output, 40-A Two Phase Synchronous
Buck Converter Using the TPS40130
The TPS40130EVM-001 evaluation module (EVM) is a high efficiency, two phase
synchronous buck converter providing a fixed 1.5-V output at up to 40 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 TPS40130 high frequency two
phase controller.
Contents
1 Description
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2
2 TPS40130EVM-001 Electrical Performance Specifications
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3
3 Schematics
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4
4 Test Setup
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7
5 TPS40130EVM-001 Typical Performance Data and Characteristic Curves
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10
6 EVM Assembly Drawings and Layout
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12
7 List of Materials
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16
List of Figures
1 TPS40130EVM-001 Power Stage/Control Schematic
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4
2 TPS40130EVM-001 Support Circuitry Schematic
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5
3 TPS40130EVM-001 Recommended Test Setup
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9
4 TPS40130EVM-001 Efficiency, V
12V_IN
= 10 V to 14 V,
V
1V5_OUT
= 1.5 V, I
1V5_OUT
= 4 A to 40 A
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10
5 TPS40130EVM-001 Line Regulation, I
1V5_OUT
= 20 A
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10
6 TPS40130EVM-001 Load Regulation
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11
7 TPS40130EVM-001 5 A to 55 A Transient Response, 5 A to 55 A at 3 A/µs,
I
1V5_OUT (10A/div)
, V
1V5_OUT(rip)
(20 mv/div), Time 10 µs/div
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11
8 TPS40130EVM-001 55 A to 5 A Transient Response, 55 A to 5 A at 3 A/µs,
I
1V5_OUT (10A/div)
, V
1V5_OUT(rip)
(20 mV/div), Time 10 µs/div
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12
9 TPS40130EVM-001 Component Placement (Top View)
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13
10 TPS40130EVM-001 Silkscreen (Top View)
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13
11 TPS40130EVM-001 Top Copper (Top View)
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14
12 TPS40130EVM-001 Layer 2 (X-Ray Top View)
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14
13 TPS40130EVM-001 Layer 3 (X-Ray Top View)
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15
14 TPS40130EVM-001 Bottom Copper (X-Ray Bottom View)
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15
List of Tables
1 TPS40130EVM-001 Electrical and Performance Specifications
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3
2 Adjusting V
1V5_OUT
With R14
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6
3 Adjusting Overcurrent Protection with R19
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6
4 TPS40130EVM-001 Bill of Materials
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16
12-V Input, 1.5-V Output, 40-A Two Phase Synchronous Buck Converter Using the TPS40130 SLUU208 – October 2004 1