ZXGD3104N8

11 of 13

www.diodes.com

November 2011

© Diodes Incorporated

A Product Line of

Diodes Incorporated

ZXGD3104N8

Design considerations

with a 1

μF X7R type ceramic capacitor C1 as shown in Figure 2. Also the ground return loop should be as short as

possible.

To minimize parasitic inductance-induced premature turn-off of the synchronous controller always keep the PCB

track length between ZXGD3104’s Drain input and MOSFET’s Drain to less than 10mm. Low internal inductance

SMD MOSFET packages are also recommended for high switching frequency power conversion to minimize

MOSFET body diode conduction loss.

The Gate pins should be as close to the MOSFET’s gate as possible. External gate resistors are optional. They can

be inserted to control the rise and fall time which may help with EMI issues.

detection threshold voltage of -10mV.

Table 1. Recommended resistor values for various supply voltages

5V

1.6

k

Ω

2

k

Ω

10V

3.3

k

Ω

4.3

k

Ω

12V

3.9

k

Ω

5.1

k

Ω

15V

5.1

k

Ω

6.8

k

Ω

19V

6.3

k

Ω

8.5

k

Ω