Silicon Laboratories TS3310DB Manuale utente

TS3310 Demo Board

Page 1

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

10µH ±10% Wire-wound

(Unshielded, 1210)

CBC3225T100KR

220pF ±5% capacitor

(C0G, 50V, 0805)

CL21C221JBANFNC

C2, C3

10µF ±10% capacitor

(X5R, 16V, 0805)

EMK212BJ106KG-T

C4, C5

0.1µF ±10% capacitor

(X7R, 16V, 0402)

EMK105B7104KV-F

0.1µF ±10% capacitor

(X7R, 50V, 0805)

08055C104KAT2A

3.3MΩ ± 1% (0805)

CRCW08053M30FKEA

TS3310

IN, STORE, OUT, PG,

GND (4)

Test points

S0, S1, S2, OUT_ON

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

Downloaded from Arrow.com.

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

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.

STORE

(V)

OUT_ON

OUT

(V)

1.8

HIGH

Equal to

STORE

(V)

2.5

3.3

2.1

2.85

4.1

Same as Above

Same as

Above

LOW

Table 2. STORE and OUT Voltage Settings

Figure 3. TS3310DB Circuit Schematic

CLSW

ISTORE(MAX)

10µH

220pF

35mA

22µH

100pF

15mA

33µH

---

10mA

100µH

---

3mA

Table 1. Expected Maximum STORE Output

Current per Inductor Value

Downloaded from Arrow.com.Downloaded from Arrow.com.

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.

Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.

TS3310 Demo Board

Silicon Laboratories, Inc. Page 4

400 West Cesar Chavez, Austin, TX 78701 TS3310-EVB Rev. 1.0

+1 (512) 416–8500 ▪ 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

Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.

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