ZXGD3103N8TC Diodes Zetex, ZXGD3103N8TC Datasheet - Page 10

• Manufacturer Part Number: ZXGD3103N8TC
• Description: SEMICONDUCTOR OTHER
• Manufacturer: Diodes Zetex

Specifications of ZXGD3103N8TC

• Configuration: High or Low Side
• Input Type: Non-Inverting
• Delay Time: 150ns
• Current - Peak: 2.5A
• Number Of Configurations: 2
• Number Of Outputs: 2
• High Side Voltage - Max (bootstrap): 180V
• Voltage - Supply: 5 V ~ 15 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ZXGD3103N8TCTR

Design considerations
It is advisable to decouple the ZXGD3103 closely to V
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.
R1, Q1 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
Select a value for resistor R
typical ZXGD3103’s detection threshold voltage of 10mV.
ZXGD3103N8
Document number: DS32255 Rev. 1 - 2
Table 1. Recommended resistor values for various supply voltages
REF
and R
10V
12V
15V
V
5V
CC
BIAS
from Table 1 based on the desired Vcc value. This provides the
REF
www.diodes.com
and R
10 of 12
R
1K6
3K3
3K9
5K1
BIAS
CC
BIAS
and ground due to the possibility of high peak gate
is important to the optimum device operation.
Diodes Incorporated
A Product Line of
R
2K0
4K3
5K1
6K8
REF
ZXGD3103N8
© Diodes Incorporated
July 2010