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What is GR8875N?

This electronic component, produced by the manufacturer "grenergy", performs the same function as "Green-Mode PWM Controller".


GR8875N Datasheet PDF - grenergy

Part Number GR8875N
Description Green-Mode PWM Controller
Manufacturers grenergy 
Logo grenergy Logo 


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Total 14 Pages



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Preliminary GR8875N Series
Green-Mode PWM Controller with High Voltage Startup Circuit
Features
High-Voltage (700V) Startup Circuit
Very Low Startup Current (<30uA)
Under-Voltage Lockout (UVLO)
100mW Standby Power
Non-Audible-Noise Green-Mode Control
65KHz Switching Frequency with Jittering for
Reducing EMI
Cycle-by-Cycle Peak Current Limiting
Internal Leading-Edge Blanking
Internal Slope Compensation
Gate Output Maximum Voltage Clamp
Internal 6mS Soft Start
Soft Driving for Reducing EMI
AC Input Brownout Protection with Hysteresis
Programmable Over Temperature Latch (OTP)
Function
Over-Voltage Protection (OVP) on VCC pin
Over-Load Protection (OLP)
Flexible Latch Shutdown Combination: OVP;
OVP+OTP
500mA Driving Capability
SOP-8 /SOP-7/DIP-8 Green Package
Ordering and Marking Information
Applications
Adaptor/ Open Frame Power Supply
LCD Monitor/TV Power Supply
Description
The GR8875N series is a highly-integrated, low
startup current, current mode PWM controller with
green-mode function, high-voltage start up circuit,
and provides several protections such as OLP, OVP,
and OCP for fault conditions. A high-voltage current
source supplies the start up current and the
traditional start up resistance can be saved in order
to reduce the start up power loss. The controller
also includes the leading-edge blanking of the
current sensing, internal slope compensation and
cycle-by-cycle peak current limiting. It is also
integrated soft driving for reducing EMI, gate output
voltage clamp function for protecting power
MOSFET.
SOP-7 /SOP-8 / DIP-8
Code 1 8 9 A B
GH IJ
Year 2008 2009 2010 2011
2016 2017 2018 2019
Code 2 1 2 3 4 ● ● ● 9 A B C
Month Jan. Feb. Mar. Apr.
Sep. Oct. Nov. Dec.
Grenergy OPTO Inc. reserves the right to make changes to improve reliability or manufacture ability without
notice, and advise customers to obtain the latest version of relevant information to verify before placing
orders.
2013.04 Ver. G Copyright Grenergy OPTO, Inc. www.grenergy-ic.com
1

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GR8875N equivalent
Preliminary GR8875N Series
Electrical Characteristics (TA = + 25 , Vcc = 15.0V, unless otherwise specified)
Parameter
Pin Min Typ
HIGH-VOLTAGE SUPPLY (HV Pin)
High-Voltage Current Source (VDC=370 ,R=125k Vcc = 0V)
Off-State Leakage Current
Brownout Threshold (see below equation 1) DC source R=125
8 2.96
8
92 102
Brownin Threshold (see below equation 2) DC source
R=125
104 114
PWM Turn-Off Debounce Time- Normal Operation
75
SUPPLY VOLTAGE
Startup Current
6
Operating Current (with 1nF load on OUT pin), Vcomp = 0V 6 0.8
Operating Current (with 1nF load on OUT pin), Vcomp = 2.5V
6
2.2
Operating Current (with 1nF load on OUT pin), Protection Tripped
(OLP, OVP)
6
0.5
UVLO (off)
689
UVLO (on)
6 16 17
OVP on VCC Pin
6 27 28
VOLTAGE FEEDBACK
Open Loop Voltage, Comp Pin Open
2 4.5
Delay Time of Comp Pin Open Loop Protection
2 50
CURRENT SENSING
Current Limit @ Low Line(Vac=86V) VDC=122 Series RHV=125k to
3 0.80 0.85
HV Vcs-H
Current limit @ High Line(Vac=259V)VDC=366 Series RHV=125k to
HV Vcs-L
3
0.7
Leading-Edge Blanking Time without Tpd
Input Impedance
3 250
31
Delay to Output
3 100
OSCILLATOR
Frequency
Normal PWM Frequency
Jitter Range
60 65
±6%
Green Mode Frequency
(-Temp. Stability 40°C ~ 105°C)
22
Voltage Stability (VCC = 11V ~ 25V)
GATE DRIVER OUTPUT
Output Low Level, VCC = 15V, IO = 20mA
Output High Level, VCC = 15V, IO =20mA
5
58
Max
4
36
112
124
30
10
18
29
0.90
70
5
2
1
Unit
mA
uA
V
V
mS
uA
mA
mA
mA
V
V
V
V
mS
V
V
nS
mΩ
nS
KHz
KHz
KHz
%
%
V
V
2013.04 Ver. G Copyright Grenergy OPTO, Inc. www.grenergy-ic.com
5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for GR8875N electronic component.


Information Total 14 Pages
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