F3 PWM controller
ICE3BS03LJG
Off-Line SMPS Current Mode Controller with integrated 500V Startup Cell ( Latched and frequency jitter Mode )
Power Management & Supply
Version 2.0, 6 Dec 2007
元器件交易网
Edition 2007-12-6
Published by
Infineon Technologies AG,81726 Munich, Germany,
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F3 PWM controller ICE3BS03LJG Revision History:2007-12-6Datasheet
Previous Version: 1.0Page
Subjects (major changes since last revision)
Type Marking Package F OSC ICE3BS03LJG
3BS3LJ
PG-DSO-8
65kHz
F3 PWM controller
ICE3BS03LJG
Off-Line SMPS Current Mode Controller with integrated 500V Startup Cell ( Latched and frequency jitter Mode )
Description
The ICE3BS03LJG is the latest version of the F3 controller for lowest standby power and low EMI features with both auto-restart and latch off protection features to enhance the system robustness. It targets for off-Line battery adapters, and low cost SMPS for low to medium power range such as app
lication for the DVD R/W, DVD Combi,Blue Ray DVD player and recorder, t top box, charger,note book adapter, etc. The inherited outstanding features includes 500V startup cell, active burst mode (achieve the lowest standby power; i.e. <100mV at no load with Vin =
270Vac) and propagation delay compensation (accurate output power limit for wide range input),modulated gate drive (low EMI), etc. The newly added technology and features can further enhance the features.It includes BiCMOS technology (further lower power consumption and extend Vcc operating range to 26V),frequency jittering feature (low EMI), built-in soft start,built-in blanking window with extendable blanking time for high load jump, external latch off enable pin (feasible for extra protection), etc. Therefore, ICE3BS03LJG is a versatile PWM controller for low to medium power application.
桃花源诗陶渊明Product Highlights
•Active Burst Mode to reach the lowest Standby Power Requirements < 100mW
•Built-in latched Off protection Mode and external latch enable function to increa robustness of the system
•Built-in and extendable blanking Window for high load jumps to increa system reliability •Frequency jitter for low EMI
•
Pb-free lead plating; RoHS compilant
Features
•500V Startup Cell switched off after Start Up •Active Burst Mode for lowest Standby Power •Fast load jump respon in Active Burst Mode •65kHz internally fixed switching frequency •Built-in Latched Off Protection Mode for
Overtemperature, Overvoltage & Short Winding •Auto Restart Protection Mode for Overload, Open Loop & VCC Undervoltage •Built-in Soft Start
•Built-in blanking window with extendable blanking time for short duration high current •External latch off enable function •Max Duty Cycle 75%
•Overall tolerance of Current Limiting < ±5%•Internal PWM Leading Edge Blanking
•BiCMOS technology provide wide VCC range •
Frequency jitter and soft gate driving for low EMI
Table of Contents Page 1Pin Configuration and Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 1.1Pin Configuration with PG-DSO-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 1.2Pin Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2Reprentative Blockdiagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 3.1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 3.2Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 3.3Improved Current Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 3.3.1PWM-OP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 3.3.2PWM-Comparator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 3.4Startup Pha . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 3.5PWM Section . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . .11 3.5.1Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 3.5.2PWM-Latch FF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 3.5.3Gate Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 3.6Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 3.6.1Leading Edge Blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 3.6.2Propagation Delay Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 3.7Control Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 3.7.1Basic and Extendable Blanking Mode . . . . . . . . . . . . . . . . . . . . . . . . . . .14 3.7.2Active Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 3.7.2.1Entering Active Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 3.7.2.2Working in Active Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 3.7.2.3Leaving Active Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 3.7.3Protection Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 3.7.3.1Latched Off Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 3.7.3.2Auto Restart Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 4Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 4.1Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 4.2Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 4.3Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 4.3.1Supply Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 4.3.2Internal Voltage Reference . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . .19 4.3.3PWM Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 4.3.4Soft Start time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 4.3.5Control Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 4.3.6Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 4.3.7Driver Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 5Outline Dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 6Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
北海旅游攻略自由行Pin Configuration and Functionality
1Pin Configuration and Functionality
怎么搜索图片
1.1Pin Configuration with PG-DSO-8 Figure1Pin Configuration PG-DSO-8(top view)1.2Pin Functionality
BL (extended Blanking and Latch off enable)
The BL pin combines the functions of extendable blanking time for entering the Auto Restart Protecti土豆丝炒饭
on Mode and the external latch off enable. The extendable blanking time function is to extend the built-in 20ms blanking time by adding an external capacitor at BL to ground. The external latch off enable function is an external access to latch off the IC. It is triggered by pulling down the BL pin to less than 0.25V.
FB (Feedback)
The information about the regulation is provided by the FB Pin to the internal Protection Unit and to the internal PWM-Comparator to control the duty cycle. The FB-Signal is the only control in ca of light load at the Active Burst Mode.
CS (Current Sen)
The Current Sen pin ns the voltage developed on the ries resistor inrted in the source of the Power MOSFET. If CS reaches the internal threshold of the Current Limit Comparator, the Driver output is immediately switched off. Furthermore, this current information can be ud to realize the Current Mode operation through the PWM-Comparator where it compares with FB signal.
Gate
《春雨》杜甫
The Gate pin is the output of the internal driver stage connected to the Gate of an external power MOSFET.
HV (High Voltage)劳动的英语
The high voltage Pin is connected to the rectified DC input voltage. It is the input for the integrated 500V Startup cell.
VCC (Power supply)
The VCC pin is the positive supply of the IC. The operating range is between 10.5V and 26V.
GND (Ground)
The GND pin is the ground of the controller.
Pin Symbol Function与名师对话
1BL extended Blanking and Latch off
enable
2FB Feedback
3CS Current Sen小雪是什么时候
4Gate Gate driver output
5HV High Voltage input
7VCC Controller Supply Voltage
8GND
Controller Ground
