Edition 2002-08-08
Published by Infineon Technologies AG,
St.-Martin-Strasse 53,
D-81541 Mnchen
Infineon Technologies AG 1999.
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circuits, descriptions and charts stated herein.
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CoolSETTM-F2
Revision History:
2002-08-08
Datasheet
Previous Version:
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Datasheet
3
August 2002
CoolSETTM-F2
P-TO220-6-3
P-DIP-8-6
P-DIP-7-1
Off-Line SMPS Current Mode Controller with integrated 650V/
800V CoolMOSTM
Product Highlights
Best in Class in DIP8, DIP7, TO220 Packages
No Heatsink required for DIP8, DIP7
Lowest Standby Power Dissipation
Enhanced Protection Functions all with Auto
Restart Mode
Isolated Drain Package for TO220
Features
650V/800V Avalanche Rugged CoolMOSTM
Only few external Components required
Input Undervoltage Lockout
67kHz/100kHz Switching Frequency
Max Duty Cycle 72%
Low Power Standby Mode to meet European Commission
Requirements
Thermal Shut Down with Auto Restart
Overload and Open Loop Protection
Overvoltage Protection during Auto Restart
Adjustable Peak Current Limitation via
External Resistor
Overall Tolerance of Current Limiting
<
5%
Internal Leading Edge Blanking
User defined Soft Start
Soft Switching for Low EMI
C
Soft Start
C
VCC
R
Start-up
VCC
-
Converter
DC Output
+
CoolSETTM-F2
Snubber
Power
Management
Protection Unit
Soft-Start Control
PWM Controller
Current Mode
FB
85 ... 270 VAC
Drain
Feedback
Feedback
Typical Application
CoolMOSTM
PWM-Controller
Low Power
StandBy
Precise Low Tolerance
Peak Current Limitation
R
Sense
Isense
GND
SoftS
Description
The second generation COOLSETTM-F2 provides several special enhancements to satisfy the needs for low
power standby and protection features. In standby mode frequency reduction is used to lower the power
consumption and support a stable output voltage in this mode. The frequency reduction is limited to 20kHz/21.5
kHz to avoid audible noise. In case of failure modes like open loop, overvoltage or overload due to short circuit
the device switches in Auto Restart Mode which is controlled by the internal protection unit. By means of the
internal precise peak current limitation the dimension of the transformer and the secondary diode can be lower
which leads to more cost efficiency.
CoolSETTM-F2
Table of Contents
Page
Datasheet
5
August 2002
1
Pin Configuration and Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1
Pin Configuration with P-DIP-8-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2
Pin Configuration with P-DIP-7-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3
Pin Configuration with P-TO220-6-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4
Pin Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2
Representative Blockdiagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1
Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2
Improved Current Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2.1
PWM-OP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2.2
PWM-Comparator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3
Soft-Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.4
Oscillator and Frequency Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4.1
Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4.2
Frequency Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.5
Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.5.1
Leading Edge Blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.5.2
Propagation Delay Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.6
PWM-Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.7
Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.8
Protection Unit (Auto Restart Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.8.1
Overload & Open loop with normal load . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.8.2
Overvoltage due to open loop with no load . . . . . . . . . . . . . . . . . . . . . . . 15
3.8.3
Thermal Shut Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2
Thermal Impedance (ICE2A765P and ICE2B765P) . . . . . . . . . . . . . . . . . . 17
4.3
Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.4
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.4.1
Supply Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.4.2
Internal Voltage Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.4.3
Control Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.4.4
Protection Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.4.5
Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.4.6
CoolMOSTM Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5
Typical Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6
Layout recommendation for C
18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7
Outline Dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
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