Silicon Laboratories TS3310DB User manual

TS3310 Demo Board
Page 1
© 2014 Silicon Laboratories, Inc. All rights reserved.
REVISION NOTE
The current revision for the TS3310 Demo Board
displays the identifier TS3310-10 on the bottom of
the evaluation board as depicted in Figure 2. If the
TS3310-10 identifier is not printed on the bottom
side of the evaluation board, please contact Silicon
Labs for support at:
https://www.silabs.com/support/pages/contacttechnicalsu
pport.aspx
COMPONENT LIST
DESIGNATION
QTY
DESCRIPTION
L1
1
10µH ±10% Wire-wound
(Unshielded, 1210)
CBC3225T100KR
C6
1
220pF ±5% capacitor
(C0G, 50V, 0805)
CL21C221JBANFNC
C2, C3
2
10µF ±10% capacitor
(X5R, 16V, 0805)
EMK212BJ106KG-T
C4, C5
2
0.1µF ±10% capacitor
(X7R, 16V, 0402)
EMK105B7104KV-F
C1
1
0.1µF ±10% capacitor
(X7R, 50V, 0805)
08055C104KAT2A
R1
1
3.3MΩ ± 1% (0805)
CRCW08053M30FKEA
U1
1
TS3310
IN, STORE, OUT, PG,
GND (4)
8
Test points
S0, S1, S2, OUT_ON
4
Jumper
FEATURES
 Input Voltage Range: 0.9V- 3.6V
 Jumper Selectable Output Voltages: 1.8V,
2.1V, 2.5V, 2.85V, 3V, 3.3V, 4.1V, and 5V
 OUT Enable/Disable Jumper
 10µH Inductor, 900mA ISAT
(Taiyo Yuden: CBC3225T100KR)
DESCRIPTION
The TS3310 is a low power boost converter with an
industry leading low quiescent current of 150nA,
enabling ultra long battery life in systems running
from a variety of battery sources. The TS3310 steps
up input voltages from 0.9V to 3.6V to eight
selectable output voltages ranging from 1.8V to 5.0V.
The TS3310 includes two output options, one being
an always-on storage output while the additional
output is an output load switch that is designed to
burst-on loads in a low duty cycle manner.
The TS3310 output voltage can be set via jumpers
S0, S1, and S2. Both the STORE and OUT output
can be monitored along with the power good output
VGOOD. Jumper OUT_ON is available to disable or
enable the OUT output.
Product data sheet and additional documentation can
be found at www.silabs.com.
ORDERING INFORMATION
Order Number
Description
TS3310DB
TS3310 Demo Board
10µH Operation
A True 150nA IQ, 0.9-3.6VIN, Selectable 1.8-5VOUT Instant-OnTM Boost Converter
Figure 1. TS3310DB Top View
Figure 2. TS3310DB Bottom View
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TS3310 Demo Board
TS3310-EVB Rev. 1.0 Page 2
DESCRIPTION
The TS3310DB is configured for 10µH inductor
operation and includes a 220pF CLSW capacitor which
is connected from the LSW pin to PCB ground,
otherwise labeled C6 on the demo board.
The maximum available output current for the
TS3310 is a function of the inductor value and the
average input current. The average input current will
vary according to the load. When the output current is
at its maximum, the averaged input current is at a
maximum. The maximum averaged input current is
defined by Equation 1.
IIN(AVG,MAX)= Ipk
2 = 1µs∙V L
Equation 1. Maximum Average Input Current
Calculation
The expected maximum STORE output current is
defined by Equation 2.
ISTORE(MAX)=VIN
VOUT
× IIN(AVG,MAX) × Efficiency
Equation 2. Expected Maximum STORE Output
Current Calculation
Table 1 lists some example inductor values and the
corresponding expected maximum output load
current available for the TS3310, assuming an 85%
efficiency.
The TS3310 demo board is configured for 3V output
by default. With a 1.2V input voltage, the TS3310DB
which is configured for 10µH operation can supply a
maximum STORE output current of approximately
35mA.
The TS3310 demo board provides test points to
monitor the output voltage STORE and OUT. The
power good pin, VGOOD, is pulled to the STORE
output by a 3.3MΩ pull-up resistor R1 and can be
monitored via test point PG. To enable or disable the
OUT output voltage, a jumper for the OUT_ON pin is
available. The STORE and OUT output voltage can
be set via jumpers S2, S1, and S0.
Table 2 displays the S2, S1, and S0 combinations
along with the corresponding output voltage. For 5V
output operation, a minimum input voltage of 2V is
required. The TS3310 demo board circuit in its default
configuration, with a 3V output voltage, is displayed in
Figure 3.
S2
S1
S0
STORE
(V)
OUT_ON
OUT
(V)
0
0
0
1.8
HIGH
Equal to
STORE
(V)
0
0
1
2.5
0
1
0
3.3
0
1
1
5
1
0
0
2.1
1
0
1
2.85
1
1
0
3
1
1
1
4.1
Same as Above
Same as
Above
LOW
0V
Table 2. STORE and OUT Voltage Settings
Figure 3. TS3310DB Circuit Schematic
L
CLSW
ISTORE(MAX)
10µH
220pF
35mA
22µH
100pF
15mA
33µH
---
10mA
100µH
---
3mA
Table 1. Expected Maximum STORE Output
Current per Inductor Value
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TS3310 Demo Board
TS3310-EVB Rev. 1.0 Page 3
TS3310DB
QUICK START PROCEDURE
Required Equipment
 TS3310DB
 1.2V Battery or 1.2V Power Supply
 Three Digital Multimeters
 One Oscilloscope
To evaluate the TS3310 the following steps are to be
performed:
1) Connect the battery or power supply’s positive
terminal to the test point labeled IN. Connect the
negative terminal of the battery or power supply
to the test point labeled GND.
2) To monitor the STORE output voltage, connect
the positive terminal of the voltmeter to the test
point labeled STORE. Connect the negative
terminal of the voltmeter to the test point labeled
GND. The output voltage should be
approximately 3V.
3) To monitor the STORE output voltage ripple,
connect an Oscilloscope probe to the test point
labeled STORE.
4) To monitor the OUT output voltage, connect the
positive terminal of the second voltmeter to the
test point labeled OUT. Connect the negative
terminal of the voltmeter to the test point labeled
GND. The output voltage should be
approximately 3V. To disable the OUT output
voltage, set jumper OUT_ON to LOW.
5) To monitor the open-drain VGOOD output,
connect an Oscilloscope Probe to the test point
labeled PG. The VGOOD output signal assumes
a high impedance once the STORE output
voltage is greater than 90% of the target output
voltage, which is 2.7V for the 3V default
configuration.
6) The maximum STORE output current for the
TS3310 programmed for 3V output operation with
a 1.2V input voltage can be measured. To
evaluate the maximum STORE output current for
the TS3310-10DB, configured for 10µH
operation, connect a 75Ω resistor from STORE to
GND.
7) To measure the STORE output current, connect
an Ammeter in series between the 75Ω Resistor
and GND.
8) To evaluate the TS3310 with a different output
voltage setting, reconfigure the provided jumpers
S0-S2. Please refer to Table 2 for the available
output voltages and their corresponding S0-S2
jumper configuration. Note that the input voltage
range is 0.9V to 3.6V. For 5V output operation, a
minimum input voltage of 2V is required.
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TS3310 Demo Board
Silicon Laboratories, Inc. Page 4
400 West Cesar Chavez, Austin, TX 78701 TS3310-EVB Rev. 1.0
[phone] ▪ www.silabs.com
Figure 4. TS3310DB Top Layer #1
Figure 5. TS3310DB Top Layer #2
Figure 6. TS3310DB Top Layer #3
Figure 7. TS3310DB Bottom Layer #1
Figure 8. TS3310DB Bottom Layer #2
Figure 9. TS3310DB Bottom Layer #3
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