VIPER16LN STMicroelectronics, VIPER16LN Datasheet
VIPER16LN
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VIPER16LN Summary of contents
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... Replacement of capacitive power supply ■ Auxiliary power supply for appliances, ■ Power metering ■ LED drivers Table 1. Device summary Order codes VIPER16LN VIPER16HN VIPER16HD VIPER16HDTR VIPER16LD VIPER16LDTR August 2010 Fixed frequency VIPer™ plus family SO16 narrow SO-16 Description The device is an off-line converter with an 800 V ...
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Contents Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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VIPER16 1 Block diagram Figure 2. Block diagram 2 Typical power Table 2. Typical power Part number VIPER16 1. Typical continuous power in non ventilated enclosed adapter measured Maximum practical continuous power in an open frame design ...
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Pin settings 3 Pin settings Figure 3. Connection diagram (top view) Note: The copper area for heat dissipation has to be designed under the DRAIN pins. Table 3. Pin description Pin N. DIP-7 SO16 1 1 ...
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VIPER16 4 Electrical data 4.1 Maximum ratings Table 4. Absolute maximum ratings Pin Symbol (DIP- DRAIN DRAIN V 5 COMP LIM ...
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Electrical data 4.3 Electrical characteristics (T = -25 to 125 ° Table 6. Power section Symbol Parameter V Break-down voltage BVDSS I OFF state drain current OFF R Drain-source on state resistance DS(on) C Effective (energy related) output ...
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VIPER16 Table 8. Controller section Symbol Parameter Error amplifier V FB reference voltage REF_FB I Current pull up FB_PULL UP G Trans conductance M Current setting (LIM) pin V Low level clamp voltage LIM_LOW Compensation (COMP) pin V Upper saturation ...
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Typical electrical characteristics 5 Typical electrical characteristics Figure 4. IDlim Figure DRAIN_START Figure 8/24 Figure 5. Figure 7. J Figure 9. Doc ID 15232 Rev 4 VIPER16 ...
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VIPER16 Figure 10 COMP J Figure 12. Operating supply current (switching Figure 14. Power MOSFET on-resistance vs T Figure 11. Operating supply current Figure 13. IDlim Figure 15. Power MOSFET break down ...
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Typical electrical characteristics Figure 16. Thermal shutdown DDon V DDCSon V DDoff I DRAIN HYST Normal operation 10/24 Shut down after over temperature Doc ID 15232 Rev 4 VIPER16 ...
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VIPER16 6 Typical circuit Figure 17. Buck converter Figure 18. Buck boost converter Doc ID 15232 Rev 4 Typical circuit 11/24 ...
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Typical circuit Figure 19. Flyback converter (primary regulation) Figure 20. Flyback converter (non isolated) 12/24 Doc ID 15232 Rev 4 VIPER16 ...
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VIPER16 7 Power section The power section is implemented with an n-channel power MOSFET with a breakdown voltage of 800 V min. and a typical R allow a virtually lossless current sensing and the thermal sensor. The gate driver of ...
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... Oscillator 9 Oscillator The switching frequency is internally fixed at 60 kHz (part number VIPER16LN or LD) or 115 kHz (part number VIPER16LN or LD). In both cases the switching frequency is modulated by approximately ±4 kHz (60 kHz version) or ±8 kHz (115 kHz version) at 230 Hz (typical) rate, so that the resulting spread- ...
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VIPER16 12 FB pin and COMP pin The device can be used both in non-isolated and in isolated topology. In case of non- isolated topology, the feedback signal from the output voltage is applied directly to the FB pin as ...
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Burst mode Figure 23. COMP pin voltage versus I 13 Burst mode When the voltage V OFF state and the consumption is reduced to I page 6. As reaction at the energy delivery stop, the exceeds the ...
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VIPER16 14 Automatic auto restart after overload or short-circuit The overload protection is implemented in automatic way using the integrated up-down counter. Every cycle incremented or decremented depending if the current logic detects the limit condition or not. ...
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Open loop failure protection 15 Open loop failure protection In case the power supply is built in fly-back topology and the VIPer16 is supplied by an auxiliary winding, as shown in converter is protected against feedback loop failure or accidental ...
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VIPER16 Figure 28. FB pin connection for isolated fly-back C VDD REF R V COMP COMPL + - SW BUS Disabled from R SENSE - E/A + REF_FB + COMP C COMP Doc ID ...
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Package mechanical data 16 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available ...
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VIPER16 Figure 29. Package dimensions Doc ID 15232 Rev 4 Package mechanical data 21/24 ...
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Package mechanical data Table 10. SO16 narrow mechanical data Dim ccc Figure 30. Package dimensions 22/24 mm Min Typ 0.1 1.25 0.31 0.17 9.8 9.9 5.8 6 3.8 ...
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VIPER16 17 Revision history s Table 11. Document revision history Date 21-Jan-2009 07-Dec-2009 14-May-2010 26-Aug-2010 Revision 1 Initial release Figure 7 on page 8 2 Updated Figure 3 on page 4 3 Updated Table 3 on page Updated 4 Figure ...
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