ZXGD3103N8TC

ZXGD3103N8
Document number: DS32255 Rev. 3 - 2
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ZXGD3103N8
Design Considerations
It is advisable to decouple the ZXGD3103 closely to V
CC
and ground due to the possibility of high peak gate currents with a 1μF X7R type ceramic
capacitor as shown in Figure 2. The Gate pins should be as close to the MOSFET’s gate as possible. Also the ground return loop should be as
short as possible.
To minimize parasitic inductance-induced premature turn-off issue of the synchronous controller always keep the PCB track length between
ZXGD3101’s Drain input and MOSFET’s Drain to less than 10mm. Low internal inductance MOSFET packages such as SO-8 and PolarPak are
also recommended for high switching frequency power conversion to minimize body diode conduction.
R4, Q2, D1 and C1 in Figure 1 are only required as a series drop-down regulator to maintain a stable Vcc around 10V from a power supply output
voltage greater than 15V.
External gate resistors are optional. They can be inserted to control the rise and fall time which may help with EMI issues.
The proper selection of external resistors R
REF
and R
BIAS
is important to the optimum device operation. Select a value for resistor R
REF
and R
BIAS
from Table 1 based on the desired Vcc value. This provides the typical ZXGD3103’s detection threshold voltage of 10mV.
Table 1. Recommended Resistor Values for Various Supply Voltages
V
CC
R
BIAS
R
REF
5V
1K6
2K0
10V
3K3
4K3
12V
3K9
5K1
15V
5K1
6K8
ZXGD3103N8
Document number: DS32255 Rev. 3 - 2
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ZXGD3103N8
Package Outline Dimensions
Please see http://www.diodes.com/package-outlines.html for the latest version.
SO-8
Suggested Pad Layout
Please see http://www.diodes.com/package-outlines.html for the latest version.
SO-8
Note: For high voltage applications, the appropriate industry sector guidelines should be considered with regards to creepage and clearance distances between
device Terminals and PCB tracking.
SO-8
Dim
Min
Max
A
-
1.75
A1
0.10
0.20
A2
1.30
1.50
A3
0.15
0.25
b
0.3
0.5
D
4.85
4.95
E
5.90
6.10
E1
3.85
3.95
e
1.27 Typ
h
-
0.35
L
0.62
0.82

0
8
All Dimensions in mm
Dimensions
Value (in mm)
X
0.60
Y
1.55
C1
5.4
C2
1.27
X
C1
C2
Y
ZXGD3103N8
Document number: DS32255 Rev. 3 - 2
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© Diodes Incorporated
ZXGD3103N8
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Copyright © 2016, Diodes Incorporated
www.diodes.com

ZXGD3103N8TC

Mfr. #:
Manufacturer:
Diodes Incorporated
Description:
Gate Drivers SYNC Mosfet CNTRL Vcc 15V 25mA 490mA
Lifecycle:
New from this manufacturer.
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