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GR8875Hのメーカーはgrenergyです、この部品の機能は「Green-Mode PWM Controller」です。 |
部品番号 | GR8875H |
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部品説明 | Green-Mode PWM Controller | ||
メーカ | grenergy | ||
ロゴ | |||
このページの下部にプレビューとGR8875Hダウンロード(pdfファイル)リンクがあります。 Total 14 pages
Preliminary GR8875 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)
HV Discharge Technology to Remove X-cap
Discharge Resistors for Good Power Saving
50mW 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 GR8875 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.
2011.12 Ver. F Copyright Grenergy OPTO, Inc. www.grenergy-ic.com
1
1 Page Preliminary GR8875 Series
Absolute Maximum Ratings
Supply Voltage VCC --------------------------------------------------------------------------------------------------------- 30V
High-Voltage Pin, HV --------------------------------------------------------------------------------------------- - 0.3 ~ 500V
COMP, RTL, CS ------------------------------------------------------------------------------------------------------- -0.3 ~ 7V
℃Junction Temperature ---------------------------------------------------------------------------------------------------- 150
℃ ℃Operating Ambient Temperature ----------------------------------------------------------------------------- -40 ~ 85
℃ ℃Storage Temperature Range --------------------------------------------------------------------------------- -65 ~ 150
℃SOP-8/SOP-7 Package Thermal Resistance -------------------------------------------------------------------- 160 /W
℃DIP-8 Package Thermal Resistance ------------------------------------------------------------------------------ 100 /W
℃Power Dissipation (SOP-8, at Ambient Temperature = 85 ) ----------------------------------------------- 400 mW
℃Power Dissipation (DIP-8, at Ambient Temperature = 85 ) ------------------------------------------------- 650mW
℃Lead Temperature (SOP-8 & DIP-8, soldering, 10sec) ------------------------------------------------------- 230
℃Lead Temperature (All Pb free packages, soldering, 10sec) ------------------------------------------------ 260
ESD Voltage Protection, Human Body Model (except HV pin) ------------------------------------------------ 3KV
ESD Voltage Protection, Machine Model ---------------------------------------------------------------------------- 300V
2011.12 Ver. F Copyright Grenergy OPTO, Inc. www.grenergy-ic.com
3
3Pages Preliminary GR8875 Series
Rising Time, Load Capacitance = 1000pF
Falling Time, Load Capacitance = 1000pF
VGATE-Clamp (VCC = 25V )
PWM SECTION
Maximum Duty Cycle
Soft Start Time (Freq=65kHz)
*Latch PIN FUNCTION OPTION (See below Fig.1)
Over Voltage Protection Threshold Voltage
OVP Debounce, Fs = 65kHz
Over Temperature Protection Threshold Voltage
OTP Debounce, Fs = 65kHz
Output Current from RTL Pin
Clamped Voltage
VCC De-latch Voltage
Below equations are for reference only.
5 150 nS
5 50 nS
5 11 13 15 V
70 75 80 %
6 mS
3 3.2 3.5 3.8 V
3 100 uS
3 0.95 1.05 1.15 V
3 100 uS
3 92 100 108 uA
3 2.2 V
3.4 V
Equation 1:
Equation 2:
[0.9v × RHV +1K ]
Vac − on(RMS) =
1K
2
[ 0.8v × RHV +1K ]
Vac − off (RMS ) =
1K
2
2011.12 Ver. F Copyright Grenergy OPTO, Inc. www.grenergy-ic.com
6
6 Page | |||
ページ | 合計 : 14 ページ | ||
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PDF ダウンロード | [ GR8875H データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
GR8875 | Green-Mode PWM Controller | grenergy |
GR8875H | Green-Mode PWM Controller | grenergy |
GR8875L | Green-Mode PWM Controller | grenergy |
GR8875N | Green-Mode PWM Controller | grenergy |