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  ON Semiconductor Electronic Components Datasheet  

NCP51820 Datasheet

High Speed Half-Bridge Driver

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NCP51820
High Speed Half-Bridge
Driver for GaN Power
Switches
The NCP51820 highspeed, gate driver is designed to meet the
stringent requirements of driving enhancement mode (emode), high
electron mobility transistor (HEMT) and gate injection transistor
(GIT), gallium nitrade (GaN) power switches in offline, halfbridge
power topologies. The NCP51820 offers short and matched
propagation delays with advanced level shift technology providing
3.5 V to +650 V (typical) common mode voltage range for the
highside drive and 3.5 V to +3.5 V common mode voltage range for
the lowside drive. In addition, the device provides stable dV/dt
operation rated up to 200 V/ns for both driver output stages in high
speed switching applications.
To fully protect the gate of the GaN power transistor against
excessive voltage stress, both drive stages employ a dedicated voltage
regulator to accurately maintain the gatesource drive signal
amplitude. The circuit actively regulates the driver’s bias rails and thus
protects against potential gatesource overvoltage under various
operating conditions.
The NCP51820 offers important protection functions such as
independent undervoltage lockout (UVLO), monitoring VDD bias
voltage and VDDH and VDDL driver bias and thermal shutdown
based on die junction temperature of the device. Programmable
deadtime control can be configured to prevent crossconduction.
Features
650 V, Integrated HighSide and LowSide Gate Drivers
UVLO Protections for VDD High and LowSide Drivers
Dual TTL Compatible Schmitt Trigger Inputs
Split Output Allows Independent TurnON/TurnOFF Adjustment
Source Capability: 1 A; Sink Capability: 2 A
Separated HO and LO Driver Output Stages
1 ns Rise and Fall Times Optimized for GaN Devices
SW and PGND: Negative Voltage Transient up to 3.5 V
200 V/ns dV/dt Rating for all SW and PGND Referenced Circuitry
Maximum Propagation Delay of Less Than 50 ns
Matched Propagation Delays to Less Than 5 ns
User Programmable DeadTime Control
Thermal Shutdown (TSD)
Typical Applications
Driving GaN Power Transistors used in Full or HalfBridge, LLC,
Active Clamp Flyback or Forward, Totem Pole PFC and
Synchronous Rectifier Topologies
Industrial Inverters and Motor Drives
AC to DC Converters
© Semiconductor Components Industries, LLC, 2019
August, 2019 Rev. 1
1
www.onsemi.com
QFN15 4x4, 0.5P
CASE 485FN
MARKING DIAGRAM
51820A
ALYW G
G
51820A
A
L
YW
G
= Specific Device Code
= Assembly Site
= Wafer Lot Number
= Assembly Start Week
= PbFree Package
(Note: Microdot may be in either location)
PIN ASSIGNMENT
VDDH 1
HOSRC 2
HOSNK 3
SW 4
NCP51820
(Top View)
13 EN
12 HIN
11 LIN
10 SGND
9 DT
ORDERING INFORMATION
Device
Package
Shipping
NCP51820AMNTWG QFN15
(PbFree)
4000 / Tape
& Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
Publication Order Number:
NCP51820/D


  ON Semiconductor Electronic Components Datasheet  

NCP51820 Datasheet

High Speed Half-Bridge Driver

No Preview Available !

VIN
POWER
STAGE
NCP51820
VDD
VDDH 1
HOSRC 2
HOSNK 3
SW 4
NCP51820
(Top View)
13 EN
12 HIN
11 LIN
10 SGND
9 DT
PWM
mC
or
DSP
VBST
VDD
EN
HIN
LIN
DT
SGND
Figure 1. Typical Application Schematic
VDD
UVLO
8.5V/8V
(ON/OFF)
SCHMITT
TRIGGER INPUT
SHOOT THOUGH
PREVENTION
CYCLEBy
CYCLE EDGE
TRIGGERED
SHUTDOWN
DEADTIME
MODE CONTROL
HO
LEVEL SHIFTER
VBST
UVLO
SR
RQ
VDDH
REGULATOR
VDDH
UVLO
LO
LEVEL SHIFTER
VDDL
REGULATOR
VDDL
UVLO
DELAY
Figure 2. Internal Block Diagram
VDDH
HOSRC
HOSNK
SW
VDDL
LOSRC
LOSNK
PGND
www.onsemi.com
2


Part Number NCP51820
Description High Speed Half-Bridge Driver
Maker ON Semiconductor
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NCP51820 Datasheet PDF






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