V er s io n 2.0 , 3 J ul 2 00 9
F3 PWM controller
ICE3AS03LJG
Off-Line SMPS Current Mode
Controller with integrated 500V
Startup Cell ( Latched and
frequency jitter Mode )
Power Management & Supply
N e v e r
s t o p
t h i n k i n g .
F3 PWM controller
ICE3AS03LJG
Revision History:
Previous Version: 0.4
Page
5, 7,12, 13,
2009-7-3
Datasheet
Subjects (major changes since last revision)
Typo error
6, 14, 16, 17, 21 Revise spike blanking time to 25us
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Edition 2009-7-3
Published by
Infineon Technologies AG,
81726 Munich, Germany,
©
2008 Infineon Technologies AG.
All Rights Reserved.
Legal disclaimer
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characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any
information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties
and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights
of any third party.
Information
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be endangered.
F3 PWM controller
ICE3AS03LJG
Off-Line SMPS Current Mode Controller with
integrated 500V Startup Cell ( Latched and
frequency jitter Mode )
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 increase robustness of the system
Built-in and extendable blanking Window for high load jumps to
increase system reliability
Frequency jitter for low EMI
Pb-free lead plating; RoHS compilant
P-DSO-8-3, -6
PG-DSO-8
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
500V Startup Cell switched off after Start Up
Active Burst Mode for lowest Standby Power
Fast load jump response in Active Burst Mode
100kHz 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 & Short Optocoupler
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
Description
The ICE3AS03LJG 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 application for the DVD R/W, DVD Combi,
Blue Ray DVD player and recorder, set 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=265Vac) 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 25V),
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, ICE3AS03LJG is a
versatile PWM controller for low to medium power
application.
T y p ic a l A p p lic a tio n
+
C
B u lk
8 5 -- 2 6 5 V A C
C
VCC
HV
S ta rtu p C e ll
VCC
P W M C o n tro lle r
C u rre n t M o d e
P re c is e L o w
T o le ra n c e P e a k
C u rre n t L im ita tio n
Power
M anagem ent
Snubber
C o n v e rte r
D C O u tp u t
-
G a te
CS
R
S e n se
C o n tro l U n it
A c tiv e B u rs t M o d e
L a tc h o ff M o d e
FB
GND
BL
A u to R e s ta rt M o d e
IC E 3 A S 0 3 L J ( L a tc h & J itte r )
Type
ICE3AS03LJG
Marking
3AS3LJ
Package
PG-DSO-8
F
OSC
100kHz
Version 2.0
3
3 Jul 2009
F3 PWM controller
ICE3AS03LJG
Table of Contents
1
1.1
1.2
2
3
3.1
3.2
3.3
3.3.1
3.3.2
3.4
3.5
3.5.1
3.5.2
3.5.3
3.6
3.6.1
3.6.2
3.7
3.7.1
3.7.2
3.7.2.1
3.7.2.2
3.7.2.3
3.7.3
3.7.3.1
3.7.3.2
4
4.1
4.2
4.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.3.6
4.3.7
5
6
Page
Pin Configuration and Functionality
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Pin Configuration with PG-DSO-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Pin Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Representative Blockdiagram
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Functional Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Improved Current Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
PWM-OP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
PWM-Comparator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Startup Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
PWM Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
PWM-Latch FF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Gate Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Leading Edge Blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Propagation Delay Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Control Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Basic and Extendable Blanking Mode . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Active Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Entering Active Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Working in Active Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Leaving Active Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Protection Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Latched Off Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Auto Restart Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Electrical Characteristics
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Supply Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Internal Voltage Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
PWM Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Soft Start time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Control Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Driver Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Outline Dimension
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Marking
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
4
3 Jul 2009
Version 2.0
F3 PWM controller
ICE3AS03LJG
Pin Configuration and Functionality
1
1.1
Pin
1
2
3
4
5
6
7
8
Pin Configuration and Functionality
Pin Configuration with PG-DSO-8
1.2
Pin Functionality
Symbol
BL
FB
CS
Gate
HV
n.c.
VCC
GND
Function
extended Blanking and Latch off
enable
Feedback
Current Sense
Gate driver output
High Voltage input
Not Connected
Controller Supply Voltage
Controller Ground
BL (extended Blanking and Latch off enable)
The BL pin combines the functions of extendable
blanking time for entering the Auto Restart Protection
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 0.33V.
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 case of light load at the
Active Burst Mode.
CS (Current Sense)
The Current Sense pin senses the voltage developed
on the series resistor inserted 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 used to realize the Current Mode
operation through the PWM-Comparator where it
compares with FB signal.
Gate
The Gate pin is the output of the internal driver stage
connected to the Gate of an external power MOSFET.
HV (High Voltage)
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 25V.
GND (Ground)
The GND pin is the ground of the controller.
Package PG-DSO-8
BL
1
8
GND
FB
2
7
VCC
CS
3
6
N.C.
Gate
4
5
HV
Figure 1
Pin Configuration PG-DSO-8(top view)
Version 2.0
5
3 Jul 2009
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