TEA6360T/V2 System General Corporation, TEA6360T/V2 Datasheet

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TEA6360T/V2

Manufacturer Part Number
TEA6360T/V2
Description
Highly integrated green-mode PWM controller.
Manufacturer
System General Corporation
Datasheet

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Highly Integrated Green-Mode PWM Controller
FEATURES
APPLICATIONS
TYPICAL APPLICATION
©System General Corp.
Version 1.8(IRO33.0003.B2)
Green-Mode PWM
Supports the “Blue Angel” Norm
Low Start-up Current (30uA)
Low Operating Current (3mA)
Leading-Edge Blanking
Built-in Synchronized Slope Compensation
Totem Pole Output with Soft Driving
Improved EMI
Constant Output Power Limit
Current Mode Operation
Cycle-by-cycle Current Limiting
Under Voltage Lockout (UVLO)
Programmable PWM Frequency
GATE Output Maximum Voltage Clamped at 18V
Short Circuit Protection
Programmable Over Temperature Protection (OTP)
Few External Components Required
Low Cost
General-Purpose Switch Mode Power Supplies
Flyback Power Converters
Power Adapters
Open-Frame SMPS
Battery Charger Adapters
RT
RA
From bridge rectifier
127~ 373VDC
RI
RIN
- 1 -
FB
RI
RT
VIN
SG6842
DESCRIPTION
enhanced to provide low standby-power and stronger
protection features. In standby mode, the PWM
frequency is linearly reduced to cut power consumption,
and to provide a stable output voltage. The BiCMOS
fabrication process enables reducing the start-up
current to 30uA and the operating current to 3mA. This
results in increased power conversion efficiency.
During normal operation, the SG6840 acts as a fixed
frequency PWM controller with a programmable PWM
frequency. The PWM frequency can be controlled by
changing an external resistor.
PWM frequency in response to decreases in the output
load. This function dramatically cuts power losses
under zero-load and light-load conditions, which helps
the power supply meet even the most stringent
international
Proprietary synchronized slope compensation ensures
the stability of the current loop under continuous-mode
operation.
constant output power limit over a wide range of AC
input voltages. An NTC thermistor is applied to sense
the ambient temperature to provide over temperature
protection. The SG6840 is available in 8-pin DIP and
SO packages.
GND
SENSE
This highly integrated PWM controller is
The patented green-mode function reduces the
Built-in line-voltage compensation maintains a
VDD
GATE
C
IN
power
D1
Rg
From auxiliary
R
conservation
winding
S
Q1
Product Specification
www.sg.com.tw
regulations.
May.10,2004
SG6840

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TEA6360T/V2 Summary of contents

Page 1

Highly Integrated Green-Mode PWM Controller FEATURES Green-Mode PWM Supports the “Blue Angel” Norm Low Start-up Current (30uA) Low Operating Current (3mA) Leading-Edge Blanking Built-in Synchronized Slope Compensation Totem Pole Output with Soft Driving Improved EMI Constant Output Power Limit Current ...

Page 2

Highly Integrated Green-Mode PWM Controller MARKING DIAGRAMS 8 SG6840TP XXXXXXXYYWWV 1 ORDERING INFORMATION Part Number Package SG6840S 8-Pin SOP SG6840D 8-Pin DIP SG6840SZ 8-Pin SOP(Lead Free) SG6840DZ 8-Pin DIP(Lead Free) PIN DESCRIPTIONS Pin No. Symbol Function 1 GND Ground 2 ...

Page 3

Highly Integrated Green-Mode PWM Controller BLOCK DIAGRAM VIN + 3 _ UVLO VDD + 7 _ 16V/10V 0.65V ©System General Corp. Version 1.8(IRO33.0003.B2 0.85V - + Internal OSC Q S BIAS R ...

Page 4

Highly Integrated Green-Mode PWM Controller ABSOLUTE MAXIMUM RATINGS Symbol Parameter DC Supply Voltage V Zener Clamp DD Zener Current I Gate Output Current out V Input Voltage to FB Pin FB V Input Voltage to SENSE Pin Sense V Input ...

Page 5

Highly Integrated Green-Mode PWM Controller Current Sense Section Symbol Parameter Zcs Input Impedance T Delay to Output PD V Threshold Voltage for Current Limiting th Threshold Voltage Change versus the Input ∆ Current ...

Page 6

Highly Integrated Green-Mode PWM Controller Over-Temperature Protection Section Symbol Parameter I Output Current from the RT Pin RT V Over Temperature Protection Threshold Voltage OTP,STOP Turn-Off Point. The Duty Cycle is Reduced Over Temperature Protection Threshold Voltage. ...

Page 7

Highly Integrated Green-Mode PWM Controller TYPICAL CHARACTERISTICS Start-up Current ( Temperature DD ST 25.5 25.0 24.5 24.0 23.5 23.0 22.5 22.0 -40 -25 - TEMPERATURE (℃) FB Voltage vs Frequency ...

Page 8

Highly Integrated Green-Mode PWM Controller Min. Operating Voltage (V Temperature 10.20 10.15 10.10 10.05 10.00 9.95 9.90 9.85 9.80 9.75 9.70 -40 -25 - TEMPERATURE (℃) RT Voltage vs Ton ...

Page 9

Highly Integrated Green-Mode PWM Controller OPERATION DESCRIPTION Start-up Current The typical start-up current is only 30uA. This ultra-low start-up current allows users to use a high resistance, and low-wattage, start-up resistor to supply the start-up power required by the SG6840. ...

Page 10

Highly Integrated Green-Mode PWM Controller that I (max) = 0.85V/R . The magnitude of the pk s resistance of the sense resistor R maximum power limit. A larger resistance will result in a smaller I and correspondingly, a lower power ...

Page 11

Highly Integrated Green-Mode PWM Controller Thermal Protection A constant current I is output from the RT pin. RT The resistor pin R determines the amplitude of the i current (1. ...

Page 12

Highly Integrated Green-Mode PWM Controller REFERENCE CIRCUIT Circuit VZ1 R1 1 THER1 SG6840 R8 VIN BOM Reference Component BD1 BD 1A/600V C1 XC 0.22u C2 EC 0.1u 250V C3,C6,C7 YC 222p C4 ...

Page 13

Highly Integrated Green-Mode PWM Controller PACKAGE INFORMATION 8 PINS-DIP( Dimensions Millimeters Symbol Min 0.381 A2 3.175 9.017 E E1 6.223 e L 2.921 e 8.509 B 0 ˚ ...

Page 14

Highly Integrated Green-Mode PWM Controller 8 PINS-SOP( Dimensions Millimeters Symbol Min. A 1.346 A1 0.101 4.648 E 0.381 5.791 L 0.406 0 ˚ θ˚ ...

Page 15

Highly Integrated Green-Mode PWM Controller System General’s products are not designed to be used as components in devices intended to support or sustain human life. Use of System General’s products in components intended for surgical implant into the body, or ...

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