Microchip Technology UCS1003-2, User Manual

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UCS1003-2 EVALUATION BOARD
USER’S GUIDE

2016 Microchip Technology Inc. DS50002430A-page 19
Chapter 3. Hardware Overview
3.1 INTRODUCTION
The UCS1003-2 Evaluation Board provides the means to demonstrate all of the
UCS1003-2 functionality. The LEDs indicate the status information.
3.1.1 Power Source
The UCS1003-2 Evaluation Board requires 5V, 3.0A. It has two power supply
connectors:
• J6 jack for AC-DC wall adapters
• J4 for connection with wires from a laboratory power supply
The board allows using only one of these power supplies or both (for the evaluating split
supply feature).
According to the note from the Electrical Characteristics table from the data sheet, for
split supply systems using the Attach Detection feature, the V
S
must not exceed
V
DD
+ 150 mV. If this condition cannot be met, then V
DD
and V
S
can be tied together,
to avoid a voltage difference higher than 150 mV between them.
The V
S
and V
DD
supply source is selected by populating jumpers on the J5 and J8
headers. The two headers must always have two jumpers populated on them in total.
The board is not functional if the jumpers are populated in other configurations. See
Table 3-1 for J5 and J8 jumper options.
TABLE 3-1: POWER SUPPLY SELECTION OPTIONS WITH J5 AND J8 HEADERS
Available Power Source(s)
Populated Positions for
Jumper J5
Populated Positions for
Jumper J8
AC-DC Adapter
Connected to
Jack J6
USB Port
Connected to
Jumper J9
Bench Power
Supply Connected
with Wires to
Connector J4
Yes No No 1-3 (V
S
tied to V
DD
)
(
1
)
2-3 (V
S
tied to jack J6)
(
1
)
No No Yes 1-2 (V
S
tied to 5V)
(
2
)
N/A
3-4 (V
DD
tied to 5V)
(
2
)
Yes No Yes 3-4 (V
DD
tied to 5V)
(
3
)
2-3 (V
S
tied to jack J6)
(
3
)
No Yes Yes 3-4 (V
DD
tied to 5V)
(
3
,
4
)
1-2 (V
S
tied to V
BUS
)
(
3
,
4
)
No Yes No 1-3 (V
S
tied to V
DD
)
(
3
,
4
)
1-2 (V
S
tied to V
BUS
)
(
3
,
4
)
Note 1: Simple setup that can be made with the AC-DC adapter from the UCS1003-2 Evaluation Board Kit.
2: This setup can be used to evaluate the charging process at different supply voltages (up to 5.5 V) and to
have an indication of the charging current from the bench power supply.
3: This setup can be used to evaluate the split power supply feature.
4: This setup can be used only if the USB port connected to jumper J9 is capable of delivering the required
charging current.