SiP32101

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Vishay Siliconix

Revision: 13-Mar-14

2

Document Number: 62935

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

Input Capacitor and Output Capacitor:

The capacitor C1 and C2 are mounted right next the

device to ensure stable voltage right before and after the

SiP32101 load switch. The capacitances of these capacitors

are 0.1 μF, 6.3 V.

Enable Terminal Header:

The header SW1 is directly connected to the EN pin of the

device (see fig. 1). The EN pin can be toggled to both Power

Port A and Power Port B by jumper. For whichever port is

input of the device, the EN pin should be connected that

port to shut down the device. The SiP32101 is activated low

enable. The enable threshold voltage is 1.4 V and the disable

threshold voltage is 0.4 V or lower.

Power Port Voltage Sense:

K-B (J4) and K-A (J3) header pins on the demo board

provide the Kelvin connection for voltage senses connected

right on the Power Port A and Power Port B. They are used

of the device can be calculated by the measured voltage

drop and load current.

SW2 and SW3:

The resistors R1 and R3 are 1 k

Ω dummy load on the board

for easy test of the enable function of the device. Setting

jumper on SW2 will connect R1 to Power Port B. Setting

jumper on SW3 will connect R3 to Power Port A.

POWER UP PROCEDURE

SiP32101 is bi-directional switch. Either power port can be

input or output.

For port B as input, port A as output; connect positive lead

of the power supply to header terminal J1 (Port B). Connect

the negative lead of the power supply to header terminal J5

as ground. The voltage range of the power supply is

between 2.3 V to 5.5 V as the input voltage of the device.

Output load can be applied to header terminal J2 (Port A)

and J5 as ground. The maximum load of SiP32101 demo

board is rated for maximum current of 5 A. SiP32101 is

active high to shut down the device. To shut down the

device, EN pin of header terminal can be connected to input

(port B) of the device by using jumper to short EN pin and

Port B pin on SW1. The EN pin on SW1 must connect to

input instead of output.

For Port A as input, Port B as output, connect positive lead

of the power supply to the header terminal J2 (Port A).

Connect the negative lead of the power supply to header

terminal J5 as ground. To shut down the device, EN pin of

header terminal can be connected to input (port A) of the

device by using jumper to short EN pin and Port A pin on

SW1. The EN pin on SW1 must connect to input instead of

output.

COMMON TESTS PERFORMED ON THE EVALUATION BOARD

setup. The dropout voltage of the switch is measured on the

can be figured out by dividing the dropout voltage by the

output load current.

Fig. 2