ICE1QS01

ICE1QS01 Datasheet

ICE 1QS01

Part	Datasheet
ICE1QS01	ICE1QS01 (pdf)

Related Parts	Information
ICE1QS01G	ICE1QS01G

PDF Datasheet Preview
Datasheet, V1.4, 27 April 2004 ICE 1QS01 Controller for Quasiresonant Switch Mode Power Supplies Supporting Low Power Standby and Power Factor Correction Power Management & Supply Never stop thinking. Previous Version 200311-28 Page13 in Page 13 in Diagram mains undervoltage lockout curent added previous version current version Page 16-18 in Page 16-18 in Min.- max.- values added, typ. values adapted, according to measuring results. previous version current version Page 20 in Page 20 in Application circuit changed to new 250 W demo board with PFC current pump. previous version current version Edition 2004-04-27 Published by Infineon Technologies AG, St.-Martin-Strasse 53, D-81541 München Infineon Technologies AG All Rights Reserved. Attention please! The information herein is given to describe certain components and shall not be considered as warranted characteristics. Terms of delivery and rights to technical change reserved. We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding circuits, descriptions and charts stated herein. Infineon Technologies is an approved CECC manufacturer. Information For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office in Germany or our Infineon Technologies Representatives worldwide see address list . Warnings Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies Office. Infineon Technologies Components may only be used in life-support devices or systems with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system, or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons ICE1QS01 Controller for Switch Mode Power Supplies Supporting Low Power Standby and Power Factor Correction PFC • Quasiresonant Operation • Primary and Secondary Regulation • Primary Current Simulation • Standby Input Power < 1 W • Low Power Consumption • Very Low Start-up Current • Soft-Start for noiseless Start-up • Standby Burst Mode with and without Control Signal for lowered Output Voltages • Digital Frequency Reduction in small Steps at Decreasing Load • Over- and Undervoltage Lockout • Switch Off at Mains Undervoltage • Mains Voltage Dependent Fold Back Point Correction • Ringing Suppression Time Controlled from Output Voltage • Free usable Fault Comparator P-DIP-8-4 P-DIP-8-4 P-DSO-8-3 P-DSO-8-3 Functional Description The ICE1QS01 is optimized to control free running flyback converters with and without Power Factor Correction with PFC Charge Pump . The switching frequency is reduced in small steps with decreasing load towards a minimum of 20 kHz in standby mode. This function is performed by a digital circuit to avoid any jitter also with periodically pulsed loads. To provide extremely low power consumption at light loads, this device can be switched into Standby Burst Mode. This is also possible without standby control signal for adapter application . Additionally, the start up current is very low. To avoid switching stresses of the power devices, the power transistor is always switched on at minimum voltage. The device has several protection functions VCC overand undervoltage, mains undervoltage and current limiting. Regulation can be done by using the internal error amplifier or an opto coupler feedback. The output driver is ideally suited for driving a power MOSFET. The ICE1QS01 is suited for TV-sets, DVD- sets, SAT- receivers and other consumer applications in the power range from 0 to app. 300 W. Type ICE1QS01 ICE1QS01G Version Ordering Code Q67040-S4558 Q67040-S4559 Package P-DIP-8 P-DSO-8 27 Apr 2004 ICE1QS01 Block Diagram Foldback Point Corr. Overvoltage - Protection UVLO SRC + 50mV + - 5.7V + 5V - 1.5V Burst-Mode Reference Voltage and Current Ringing Suppression Time Start 5V + 4.8V - + 4.5V - + 3.5V - 50µs Timer Latch 50ms Timer Primary Regulation Digital Processing 5V 20k ZC-Counter UP/DO-Counter S Q SET Power Driver RQ CLR D Q SET LQ Version 27 Apr 2004 Pinning Pin Symbol N.C. Function Primary Current Simulation Regulation and Zero Crossing Input Soft-Start and Regulation Capacitor Overvoltage Fault Comparator Ground Output Supply Voltage

PDF Datasheet Preview

Datasheet, V1.4, 27 April 2004

ICE 1QS01

Controller for Quasiresonant Switch Mode Power Supplies Supporting Low Power Standby and Power Factor Correction

Power Management & Supply

Never stop thinking.

Previous Version 200311-28

Page13 in

Page 13 in

Diagram mains undervoltage lockout curent added
previous version current version

Page 16-18 in Page 16-18 in Min.- max.- values added, typ. values adapted, according to measuring results. previous version current version

Page 20 in

Page 20 in

Application circuit changed to new 250 W demo board with PFC current pump.
previous version current version

Edition 2004-04-27

Published by Infineon Technologies AG, St.-Martin-Strasse 53, D-81541 München

Infineon Technologies AG

All Rights Reserved.

Attention please!

The information herein is given to describe certain components and shall not be considered as warranted characteristics. Terms of delivery and rights to technical change reserved. We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding circuits, descriptions and charts stated herein. Infineon Technologies is an approved CECC manufacturer.

Information

For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office in Germany or our Infineon Technologies Representatives worldwide see address list .

Warnings

Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies Office. Infineon Technologies Components may only be used in life-support devices or systems with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system, or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons

ICE1QS01

Controller for Switch Mode Power Supplies Supporting Low Power Standby and Power Factor Correction PFC
• Quasiresonant Operation
• Primary and Secondary Regulation
• Primary Current Simulation
• Standby Input Power < 1 W
• Low Power Consumption
• Very Low Start-up Current
• Soft-Start for noiseless Start-up
• Standby Burst Mode with and without Control Signal for lowered Output

Voltages
• Digital Frequency Reduction in small Steps at Decreasing Load
• Over- and Undervoltage Lockout
• Switch Off at Mains Undervoltage
• Mains Voltage Dependent Fold Back Point Correction
• Ringing Suppression Time Controlled from Output Voltage
• Free usable Fault Comparator

P-DIP-8-4

P-DIP-8-4

P-DSO-8-3

P-DSO-8-3

Functional Description

The ICE1QS01 is optimized to control free running flyback converters with and without Power Factor Correction with PFC Charge Pump .

The switching frequency is reduced in small steps with decreasing load towards a minimum of 20 kHz in standby mode. This function is performed by a digital circuit to avoid any jitter also with periodically pulsed loads. To provide extremely low power consumption at light loads, this device can be switched into Standby Burst Mode. This is also possible without standby control signal for adapter application .

Additionally, the start up current is very low. To avoid switching stresses of the power devices, the power transistor is always switched on at minimum voltage. The device has several protection functions VCC overand undervoltage, mains undervoltage and current limiting. Regulation can be done by using the internal error amplifier or an opto coupler feedback. The output driver is ideally suited for driving a power MOSFET. The ICE1QS01 is suited for TV-sets, DVD- sets, SAT- receivers and other consumer applications in the power range from 0 to app. 300 W.

Type ICE1QS01 ICE1QS01G

Version
Ordering Code Q67040-S4558 Q67040-S4559

Package P-DIP-8 P-DSO-8
27 Apr 2004

ICE1QS01

Block Diagram

Foldback Point Corr.

Overvoltage
- Protection

UVLO

SRC +
50mV + -
5.7V
+ 5V -
1.5V

Burst-Mode

Reference Voltage and

Current

Ringing Suppression

Time

Start 5V
+ 4.8V -
+ 4.5V -
+ 3.5V -
50µs Timer

Latch
50ms Timer

Primary Regulation

Digital Processing
5V 20k

ZC-Counter UP/DO-Counter

S Q SET

Power Driver

RQ CLR

D Q SET LQ

Version
27 Apr 2004

Pinning

Pin Symbol

N.C.

Function

Primary Current Simulation Regulation and Zero Crossing Input Soft-Start and Regulation Capacitor Overvoltage Fault Comparator Ground Output Supply Voltage

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived ICE1QS01 Datasheet file may be downloaded here without warranties.

Datasheet ID: ICE1QS01 638044