Texas Instruments TPS62840-1YBGEVM56, User Manual

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1 SLUUC17 – May 2019
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Copyright © 2019, Texas Instruments Incorporated
TPS62840-1YBGEVM56 User's Guide
User's Guide
SLUUC17 – May 2019
TPS62840-1YBGEVM56 User's Guide
The TPS62840-1YBGEVM56 (BSR056-001) facilitates the evaluation of the TPS6284xYBG family of 750-
mA, step-down converters with 60-nA I
Q
in tiny 1.47-mm by 0.97-mm WCSP packages with 0.4-mm pitch.
The EVM contains 2 separate circuits to create output voltages between 0.8 V and 3.3 V from higher input
voltages between 1.8 V and 6.5 V. All circuits have a maximum height of 1 mm. Due to its extremely low
I
Q
, the TPS6284x provides a long battery lifetime for systems which have very low current consumption
states such as wearables, Internet of Things- (IoT-) connected devices, and other portable end equipment.
Contents
1 Introduction
...................................................................................................................
2
2 Setup
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4
3 TPS62840-1YBGEVM56 Test Results
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5
4 Board Layout
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6
5 Schematic and Bill of Materials (BOM)
..................................................................................
12
List of Figures
1 Loop Response Measurement Modification
..............................................................................
3
2 TPS62840 Thermal Performance (V
IN
= 3.6 V, V
OUT
= 1.8 V, I
OUT
= 750 mA)
........................................
5
3 Loop Response (V
IN
= 3.6 V, V
OUT
= 1.8 V, I
OUT
= 750 mA)
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5
4 Top Assembly
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6
5 Top Layer
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7
6 Internal Layer 1
..............................................................................................................
8
7 Internal Layer 2
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9
8 Bottom Layer
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10
9 TPS62840-1YBGEVM56 Angled View
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11
10 TPS62840-1YBGEVM56 Overhead View
...............................................................................
11
11 TPS62840 Schematic
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12
12 TPS62841 Schematic
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12
List of Tables
1 BSR056 Circuit Options
.....................................................................................................
2
2 Performance Specification Summary
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2
3 TPS62840 Bill of Materials
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13
4 TPS62841 Bill of Materials
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13
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