VIPER53ESPTR-E STMicroelectronics, VIPER53ESPTR-E Datasheet

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Features Switching frequency up to 300kHz Current mode control with adjustable limitation Soft start and shut-down control Automatic burst mode in standby condition (“Blue Angel“ compliant ) Undervoltage lockout with Hysteresis Integrated start-up current source Over-temperature protection Overload and short-circuit ...

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Contents Contents 1 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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... These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. Table 1. ...

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Electrical characteristics 2 Electrical characteristics T = 25° 13V, unless otherwise specified J DD Table 3. Power section Symbol Parameter Drain-Source BV DSS Voltage Off State Drain I DSS Current Static Drain-Source R DS(on) On State Resistance t ...

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VIPer53EDIP - E / VIPer53ESP - E Table 5. Supply Section Symbol Drain Voltage Starting V DSstart Threshold I Startup Charging Current DDch1 I Startup Charging Current V DDch2 Startup Charging Current I DDchoff in Thermal Shutdown Operating Supply Current ...

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Electrical characteristics Table 6. Pwm Comparator Section Symbol Parameter t Minimum On Time ONmin2 V COMP V COMPoff Threshold V V COMPhi COMP I COMP Pull Up Current V COMP 1. In order to ensure a correct stability of the ...

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VIPer53EDIP - E / VIPer53ESP - E 3 Pin connections and function Figure 1. Pin connection (top view) COMP 1 OSC 2 3 SOURCE 4 SOURCE Figure 2. Current and voltage conventions Table 10. Pin function Pin Name Power supply ...

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Rectangular U-I Output characteristics 4 Rectangular U-I Output characteristics Figure 3. Off Line Power Supply With Optocoupler Feedback 8/ VDD DRAIN OSC CONTROL COMP TOVL SOURCE ...

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VIPer53EDIP - E / VIPer53ESP - E 5 Secondary Feedback Configuration Example The secondary feedback is implemented through an optocoupler driven by a programmable zener diode (TL431 type) as shown in The optocoupler is connected in parallel with the compensation ...

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Current Mode Topology 6 Current Mode Topology The VIPer53E implements the conventional current mode control method for regulating the output voltage. This kind of feedback includes two nested regulation loops: The inner loop controls the peak primary current cycle by ...

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VIPer53EDIP - E / VIPer53ESP - E 7 Standby Mode The device offers a special feature to address the low load condition. The corresponding function described hereafter consists of reducing the switching frequency by going into burst mode, with the ...

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Standby Mode Where Ip(V COMPbl2 voltage of V COMPbl burst mode does not depend on the input voltage. The standby frequency F The ratio between the nominal and standby switching frequencies can be as high as 4, depending on the ...

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VIPer53EDIP - E / VIPer53ESP - E 8 High Voltage Start-up Current Source An integrated high voltage current source provides a bias current from the DRAIN pin during the start-up phase. This current is partially absorbed by internal control circuits ...

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High Voltage Start-up Current Source Figure 5. Start-up Waveforms 14/ DD1 I DDch2 I DDch1 V tSS DD V DDreg V DDst V DDsd tSU DocRev1 VIPer53EDIP - E / VIPer53ESP - ...

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VIPer53EDIP - E / VIPer53ESP - E 9 Short-Circuit and Overload Protection A V threshold of about 4.4V has been implemented on the COMP pin. When V COMPovl goes above this level, the capacitor connected on the TOVL pin begins ...

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Regulation Loop Stability 10 Regulation Loop Stability The complete converter open loop transfer function can be built from both power cell and the feedback network transfer functions. A theoretical example can be seen in page 22 for a discontinuous mode ...

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VIPer53EDIP - E / VIPer53ESP - E The lowest load gives another condition for stability: The frequency F encounter the third order slope generated by the load pole, the R1-C1 network on the COMP pin and the R2-C2 network at ...

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Special Recommendations 11 Special Recommendations 10nF capacitor (minimum value: 8nF) should always be connected to the COMP pin to ensure correct stability of the internal current source In order to improve the ruggedness of the device versus eventual drain overvoltages, ...

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VIPer53EDIP - E / VIPer53ESP - E 12 Software Implementation All the above considerations and some others are included included in ST design software which provides all of the needed components around the VIPer device for specified output configurations, and ...

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Operation pictures 13 Operation pictures Figure 6. Rise and Fall time 90 10% Figure 7. Overloaded Event 20/31 t VDD OSC t rv COMP Normal Abnormal operation operation V DDon V ...

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VIPer53EDIP - E / VIPer53ESP - E Figure 8. Complete Converter Transfer Function 1 ---- ----- ---- ---- ----- ---- ----- ---- ---- -- - OUT 3.2 ---- ----- ---- ---- --- - P ...

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Operation pictures Figure 9. Start- DD0 V DDhyst I DDch2 I DDch1 Figure 11. Thermal Shutdown HYST DDon V COMP 22/31 current Figure 10. Blanking Time ...

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VIPer53EDIP - E / VIPer53ESP - E Figure 13. Shutdown Action V OSC V OSChi V OSClo V COMP V COMPoff I D Figure 15. Oscillator Schematic Figure 14. Comp Pin Gain and Offset I Dpeak t I Dlim I ...

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Operation pictures The switching frequency settings shown on the graphic here below is valid within the following boundaries: R > 300kHz SW Figure 16. Oscillator Settings Frequency (kHz) Figure 17. Typical Frequency Variation vs. Junction Temperature ...

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VIPer53EDIP - E / VIPer53ESP - E Figure 18. Typical Current Limitation vs. Junction Temperature Normalised IDlim 1.04 1.02 0.98 0. Temperature (°C) DocRev1 Operation pictures 60 80 100 120 25/31 ...

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Mechanical Data 14 Mechanical Data In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the ...

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VIPer53EDIP - E / VIPer53ESP - E Table 11. DIP8 Mechanical Data Ref Package Weight Figure 19. Package Dimensions Dimensions Databook (mm) Nom. Min 0.38 2.92 3.30 ...

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Mechanical Data Table 12. PowerSO-10 Mechanical Data Ref Figure 20. Package Dimensions 28/31 VIPer53EDIP - E / VIPer53ESP - E Dimensions Databook (mm) ...

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... VIPer53EDIP - E / VIPer53ESP - E 15 Order codes Table 13. Order codes Part Number VIPer53ESPTR - E VIPer53ESP - E VIPer53EDIP - E Package PowerSO-10 PowerSO-10 DIP-8 DocRev1 Order codes Shipment Tape and reel Tube Tube 29/31 ...

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Revision history 16 Revision history Table 14. Document revision history Date 12-Jan-2006 30/31 Revision 1 Initial release. DocRev1 VIPer53EDIP - E / VIPer53ESP - E Changes ...

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... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics ...