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ICE2A180-ICE2A280
Off-Line SMPS Current Mode Controller with integrated 650V/800V CoolMOS
CoolSET™-F2
ICE2A165/265/365
ICE2A180/280Off-Line SMPS Current Mode
Controller with integrated 650V/
800V CoolMOS™
For questions on technology, delivery and prices please contact the Infineon Technologies Offices in Germany or
the Infineon Technologies Companies and Representatives worldwide: see our webpage at http://
www.infineon.com
CoolMOS™, CoolSET™ are trademarks of Infineon TechnologiesAG.
CoolSET™-F2
Revision History:2001-09-19Datasheet
Previous Version:First One
typ @ T=25°C
CoolSET™-F2
ICE2A165/265/365
ICE2A180/280
Off-Line SMPS Current Mode Controller
with integrated 650V/800V CoolMOS™
Product HighlightsBest of Class in DIP8 PackageNo Heatsink requiredLowest Standby Power DissipationEnhanced Protection Functions all
with Auto Restart Mode
Features650V/800V Avalanche Rugged CoolMOS™Only few external Components requiredInput Undervoltage Lockout100kHz Switching FrequencyMax Duty Cycle 72% Low Power Standby Mode to meet European
Commission RequirementsThermal Shut Down with Auto RestartOverload and Open Loop ProtectionOvervoltage Protection during Auto Restart Adjustable Peak Current Limitation via
External ResistorOverall Tolerance of Current Limiting < ±5%Internal Leading Edge BlankingUser defined Soft Start Soft Switching for Low EMI
DescriptionThe second generation COOLSET™-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 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.
Table of Contents PagePin Configuration and Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51.1Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.2Pin Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Representative Blockdiagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73.1Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3.2Improved Current Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3.2.1PWM-OP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.2.2PWM-Comparator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.3Soft-Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.4Oscillator and Frequency Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.4.1Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.4.2Frequency Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.5Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.5.1Leading Edge Blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.5.2Propagation Delay Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.6PWM-Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.7Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.8Protection Unit (Auto Restart Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.8.1Overload & Open loop with normal load . . . . . . . . . . . . . . . . . . . . . . . . .12
3.8.2Overvoltage due to open loop with no load . . . . . . . . . . . . . . . . . . . . . . .13
3.8.3Thermal Shut Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .144.1Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4.2Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.3Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.3.1Supply Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.3.2Internal Voltage Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.3.3Control Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
4.3.4Protection Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
4.3.5Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
4.3.6CoolMOS™ Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Typical Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Outline Dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Pin Configuration and FunctionalityPin Configuration and Functionality
1.1Pin Configuration
Figure1Pin Configuration (top view)
1.2Pin Functionality
SoftS (Soft Start & Auto Restart Control)
This pin combines the function of Soft Start in case of
Start Up and Auto Restart Mode and the controlling of
the Auto Restart Mode in case of an error detection.
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.
Isense (Current Sense)
The Current Sense pin senses the voltage developed
on the series resistor inserted in the source of the
integrated CoolMOS™. When Isense reaches the
internal threshold of the Current Limit Comparator, the
Driver output is disabled. By this means the Over
Current Detection is realized.
Furthermore the current information is provided for the
PWM-Comparator to realize the Current Mode.
Drain (Drain of integrated CoolMOS™)
Pin Drain is the connection to the Drain of the internal
CoolMOSTM.
VCC (Power supply)
This pin is the positiv supply of the IC. The operating
range is between 8.5V and 21V.
To provide overvoltage protection the driver gets
disabled when the voltage becomes higher than 16.5V
during Start Up Phase.
GND (Ground)
This pin is the ground of the primary side of the SMPS. at Tj = 110°C at Tj = 110°C