RT7021A/B
®
DS7021A/B-03 September 2016 www.richtek.com
1
Copyright 2016 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
©
0.3A/0.6A, High/Low-Side MOSFET Driver
Applications
PDP Scan Driver
Fluorescent Lamp Ballast
SMPS
Motor Driver
General Description
The RT7021A/B is a high-voltage gate driver IC with dual
outputs. The IC, together with an external bootstrap
network, drives dual n-channel MOSFETs or IGBTs with
input voltage rail up to 600V.
The IC is equipped with a “common-mode dV/dt noise
canceling technique” to provide high dV/dt immunity which
enables stable operation under high dV/dt noise
circumstances. Two Under-Voltage Lockout (UVLO)
functions continuously monitor the bias voltages on VCC
and BOOT-to-LX for preventing malfunction when the bias
voltages are lower than the specified threshold voltages.
The logic level of the PWM signal input pins are compatible
with standard TTL logic level for ease of interfacing with
controlling devices.
Features
Floating Channels Designed for Bootstrap
Operation with Input Voltage up to 600V
300mA/600mA Sourcing/Sinking Current
High dV/dt Immunity :
±±
±±
±50V/nsec
V
CC
and V
BOOT
−−
−−
− LX
Supply Range from 13V to 20V
Under-Voltage Lockout Functions for Both Channels
TTL Compatible Logic Input
Matched Propagation Delay below 20ns
Outputs in Phase with Input (RT7021A) or Out of
Phase with Input (RT7021B)
RoHS Compliant and Halogen Free
Simplified Application Circuit
Ordering Information
Note :
Richtek products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Package Type
S : SOP-8
N : DIP-8
RT7021A/B
Lead Plating System
G : Green (Halogen Free and Pb Free)
With Input
A : In Phase
B : Out of Phase
RT7021B
BOOT
LX
VCC
GND
LGATE
UGATE
PWM
Signal
600V
C1
LIN
HIN
R
LGATE
R
UGATE
To Load
V
CC
RT7021A
BOOT
LX
VCC
GND
LGATE
UGATE
R
LGATE
R
UGATE
HIN
LIN
PWM
Signal
600V
C1
To Load
V
CC
