ICE2QS02G Infineon Technologies, ICE2QS02G Datasheet
ICE2QS02G
Specifications of ICE2QS02G
Related parts for ICE2QS02G
ICE2QS02G Summary of contents
Page 1
...
Page 2
... Infineon Technologies Office. Infineon Technologies Components may only be used in life-support devices or systems with the express written approval of Infineon Technologies failure of such components can reasonably be expected to cause the failure of that life-support device or system affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body support and/or maintain and sustain and/or protect human life ...
Page 3
... In addition, numerous protection functions have been implemented in the IC to protect the system and customize the IC for the chosen application. All of these make the ICE2QS02G an outstanding product for real quasi-resonant flyback converter in the market. Typical Application Snubber ...
Page 4
... Supply Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 4.3.2 Internal Voltage Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 4.3.3 PWM Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 4.3.4 Current Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 4.3.5 Soft Start .13 4.3.6 Foldback Point Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 4.3.7 Digital Zero Crossing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 4.3.8 Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 4.3.9 Gate Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 5 Outline Dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Version 2.0 Quasi-Resonant PWM Controller 4 ICE2QS02G Page 13 June 2008 ...
Page 5
... VCC (Power supply) The VCC pin is the positive supply of the IC and should be connected to an external auxiliary supply. GND (Ground) This is the common ground of the controller. 5 ICE2QS02G (100mV). Second, after the MOSFET is (4.5V). Finally, during the ZCOVP exceeds the VINS 13 June 2008 ...
Page 6
... Representative Block Diagram Figure 2 Representative block diagram Version 2.0 Quasi-Resonant PWM Controller Representative Block Diagram 6 ICE2QS02G 13 June 2008 ...
Page 7
... The soft- start implemented in ICE2QS02G is a digital time- based function. The preset soft-start time is 16ms with 4 steps. The internal reference for the feedback voltage begins at 1.8V and with an increment of 0.55V for each following step ...
Page 8
... In the ICE2QS02G, the number of zero crossing is limited to 7. Therefore, the counter varies between 1 and 7, and any attempt beyond this range is ignored. When V exceeds V voltage, the up/down FB FBZR1 counter is initialised order to allow the system to react rapidly to a sudden load increase. The up/down counter value is also intialised the start-up, to ensure an efficient maximum load start up ...
Page 9
... CS offset to decrease the maximum limit on V ideal curve shown in Figure nonlinear one, a digital block in ICE2QS02G is implemented to get a better control of maximum output power. Additional advantage to use digital circuit is the production tolerance is smaller compared to analog solutions. The typical maximum limit on V shown in Figure 6 ...
Page 10
... Protection Functions ICE2QS02G provides various protection functions. The following table summarizes these protection functions. Table 2 Protection features VCC Undervoltage Latch off Overload/Openloop Auto restart Protection Main undervoltage Block Gate Protection recover with soft start Output Overvoltage Latch off Short Winding ...
Page 11
... BL V -0.3 5 -0.3 5 -0.3 5 -0.3 10.0 GATE T -40 125 j T -55 150 S R (DSO) 185 thJA - ESD Symbol Limit Values min. max VCC VCCUVP T -25 125 jCon 11 ICE2QS02G Electrical Characteristics Unit Remarks K/W PG-DSO Human body model Unit Remarks V °C 13 June 2008 ...
Page 12
... I - 300 VCCstart - 1.5 I VCCop I - 300 VCCLO V 11.3 12.0 VCCon V - 11.0 VCCoff V 0.6 1 VCChys Symbol Limit Values min. typ. 4.90 5.00 V REF 12 ICE2QS02G Electrical Characteristics = assumed. CC Unit Test Condition max 11V VCC - mA Output low 12 1.4 V Unit Test Condition max. 5.10 V Measured at pin FB ...
Page 13
... Limit Values min. typ SSS V - 1.8 SS1 V - 0.55 SSS Symbol Limit Values min. typ 1.02 CS_FBC_S V - 0.65 CS_FBC_MIN 13 ICE2QS02G Electrical Characteristics Unit Test Condition max 3.47 0.85 V Unit Test Condition max. 1.10 V 450 ns Unit Test Condition max Unit Test Condition max. - ...
Page 14
... Limit Values min. typ. V 4.4 4.5 FBOLP 3.80 3.9 BLH V 0.4 0.5 BLL V 4.4 4.5 ZCOVP t - 100 ZCOVP V 1.63 1.68 CSSW t - 190 CSSW 14 ICE2QS02G Electrical Characteristics Unit Test Condition max. 170 3.32 V 2.62 V 2. Unit Test Condition max. 4 4.01 V 0.6 V 4.6 ...
Page 15
... ZCRS1 ZCRS2 V - 0.7 ZCRS t 25 30.0 OnMax t 42 50.0 PerMax Symbol Limit Values min. typ GATElow V 9.0 10.0 GATEhigh - - GATEasd rise fall 15 ICE2QS02G Electrical Characteristics - 3 > ZCT2 < ZCT2 - V 35 >4.3V Unit Test Condition max. 1 20mA; OUT V =18V VCC - -20mA; OUT ...
Page 16
... Outline Dimension PG-DSO-8 ( Plastic Dual Small Outline) Figure 8 PG-DSO-8-8 *Dimensions in mm Version 2.0 Quasi-Resonant PWM Controller 16 ICE2QS02G Outline Dimension 13 June 2008 ...
Page 17
... Geben Sie uns die Chance, hohe Leistung durch umfassende Qualität zu beweisen. Wir werden Sie überzeugen Published by Infineon Technologies AG Quality takes on an allencompassing significance at Semiconductor Group. For us it means living up to each and every one of your demands in the best possible way are not only concerned with product quality ...