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NCP51705 Datasheet

Low-Side SiC MOSFET Driver

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NCP51705
Single 6 A High-Speed,
Low-Side SiC MOSFET
Driver
The NCP51705 driver is designed to primarily drive SiC MOSFET
transistors. To achieve the lowest possible conduction losses, the
driver is capable to deliver the maximum allowable gate voltage to the
SiC MOSFET device. By providing high peak current during turnon
and turnoff, switching losses are also minimized. For improved
reliability, dV/dt immunity and even faster turnoff, the NCP51705
can utilize its onboard charge pump to generate a user selectable
negative voltage rail.
For full compatibility and to minimize the complexity of the bias
solution in isolated gate drive applications the NCP51705 also
provides an externally accessible 5 V rail to power the secondary side
of digital or high speed opto isolators.
The NCP51705 offers important protection functions such as
undervoltage lockout monitoring for the bias power and thermal
shutdown based on the junction temperature of the driver circuit.
Features
High Peak Output Current with Split Output Stages to allow
independent TurnON/TurnOFF Adjustment;
Source Capability: 6 A
Sink Capability: 6 A
Extended Positive Voltage Rating for Efficient SiC MOSFET
Operation during the Conduction Period
Useradjustable Builtin Negative Charge Pump for Fast Turnoff
and Robust dV/dt Immunity
Accessible 5 V Reference / Bias Rail for Digital Oscillator Supply
Adjustable UnderVoltage Lockout
Desaturation Function
Thermal Shutdown Function (TSD)
Small & Low Parasitic Inductance QFN24 Package
Typical Applications
Driving SiC MOSFET
Industrial Inverters, Motor Drivers
PFC, AC to DC and DC to DC Converters
www.onsemi.com
MARKING
DIAGRAM
1 24
QFN24 4x4
MN SUFFIX
CASE 485L
ZXYTT
P51705
MPX
Z = Plant Code
X = 1Digit Year Code
Y = 1Digit Week Code
TT = 2Digit Die Run Code
MP = Package Type (QFN)
X = Package Type (Tape & Reel)
PIN CONNECTIONS
IN+ 1
IN2
XEN 3
SGND 4
VEESET 5
VCH 6
NCP51705
(Top View )
18 OUTSRC
17 OUTSRC
16 PGND
15 PGND
14 OUTSNK
13 OUTSNK
ORDERING INFORMATION
Device
Package
Shipping
NCP51705MNTXG QFN24 3000 / Tape & Reel
(PbFree)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2017
April, 2019 Rev. 3
1
Publication Order Number:
NCP51705/D


  ON Semiconductor Electronic Components Datasheet  

NCP51705 Datasheet

Low-Side SiC MOSFET Driver

No Preview Available !

NCP51705
20 V
Controller
VEESET = SGND ³ OFF
VEESET = OPEN ³ 3.4 V
VEESET = V5V ³ 5 V
VEESET = SVDD ³ 8 V
Note: Make single point connection
From SGND to PGND on PCB.
IN+ 1
IN2
XEN 3
SGND 4
VEESET 5
VCH 6
NCP51705
(Top View)
(a) Low Side Switching Configuration
18 OUTSRC
17 OUTSRC
16 PGND
15 PGND
14 OUTSNK
13 OUTSNK
CONTROLLER BIAS(3.3 V or 5 V)
ISOLATOR BIAS
PWM_HS
Digital Controller
FAULT _HS
FAULT _LS
XEN_HS
ENABLE
PWM_LS
Digital
Isolators
ISOLATOR BIAS
XEN_LS
20 V BIAS (isolated)
20 V BIAS (isolated)
Isolation
Boundary
(b) Half Bridge Switching Configuration
Figure 1. Typical Application Schematics
www.onsemi.com
2


Part Number NCP51705
Description Low-Side SiC MOSFET Driver
Maker ON Semiconductor
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