ZXGD3111N7
200V ACTIVE OR'ING MOSFET CONTROLLER IN SO-7
Description
Features
The ZXGD3111N7 is a 200V Active OR’ing MOSFET Controller
designed for driving a very low RDS(ON) Power MOSFET as an ideal
diode. This replaces the standard rectifier to reduce the forward
voltage drop and overall increase the power transfer efficiency.
Active OR’ing MOSFET Controller for High- or Low-Side PSU
Ideal Diode to Reduce Forward Voltage Drop
-3mV Typical Turn-Off Threshold with ±2mV Tolerance
200V Drain Voltage Rating
25V VCC Rating
The ZXGD3111N7 can be used on both high-side and low-side power
supply units (PSU) with rails up to ±200V. It enables very low RDS(ON)
MOSFETs to operate as ideal diodes as the turn-off threshold is
only -3mV with ±2mV tolerance. In the typical 48V configuration, the
standby power consumption is <50mW as the low quiescent supply
current is <1mA. During PSU fault condition, the OR’ing Controller
detects the power reduction and rapidly turns off the MOSFET in
<600ns to block reverse current flow and avoid the common bus
voltage dropping.
<50mW Standby Power with Quiescent Supply Current <1mA
<600ns Turn-Off Time to Minimize Reverse Current
Totally Lead-Free & Fully RoHS compliant (Notes 1 & 2)
Halogen and Antimony free. “Green” Device (Note 3)
Mechanical Data
Applications
Case: SO-7
Active OR’ing Controller in:
Case Material: Molded Plastic. ―Green‖ Molding Compound.
UL Flammability Rating 94V-0
(N+1) Redundant Power Supplies
Telecom and Networking
Moisture Sensitivity: Level 1 per J-STD-020
Terminals: Finish – Matte Tin Plated Leads, Solderable per
MIL-STD-202, Method 208
Data Centers and Servers
Weight: 0.074 grams (Approximate)
Typical Configuration for
Low-Side -ve Supply Rail
SO-7
VD
VS
-ve Vout
-ve Rail
1
2
3
4
7
VG
GATE GND PGND
DRAIN
GND
GND
VCC
DRAIN
C1
ZXGD3112
ZXGD3111
6
5
PGND
PGND
Vcc
GATE
GND
GND Rail
Top View
Pin-Out
Top View
Pin Functions
Pin Number
Pin Name
Pin Function and Description
Ground
1, 2
GND
VCC
Connect this pin to the MOSFET source terminal and ground reference point.
Power Supply
3
4
This supply pin should be closely decoupled to ground with a X7R type capacitor.
Gate Drive
GATE
This pin sources (ISOURCE) and sinks (ISINK) current into the MOSFET gate. If VCC > 12V, then the GATE-to-GND
will clamp at 12V. The turn-on time of the MOSFET can be programmed through an external gate resistor (RG).
Power Ground
5, 6
7
PGND
DRAIN
Connect this pin to the MOSFET source terminal and ground reference point.
Drain Sense
Connect this pin to the MOSFET drain terminal to detect the change in drain-source voltage.
1 of 10
www.diodes.com
October 2018
© Diodes Incorporated
ZXGD3111N7
Document Number DS38273 Rev. 4 - 2
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