TEA1795T/N1,118 NXP Semiconductors, TEA1795T/N1,118 Datasheet
TEA1795T/N1,118
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TEA1795T/N1,118 Summary of contents
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TEA1795T GreenChip synchronous rectifier controller Rev. 1 — 4 November 2010 1. General description The TEA1795T is a member of the new generation of Synchronous Rectifier (SR) controller ICs for switched mode power supplies. Its high level of integration enables ...
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... NXP Semiconductors Server power supplies LCD television Plasma television 4. Ordering information Table 1. Ordering information Type number Package Name TEA1795T/N1 SO8 5. Block diagram DSA SSA DSB SSB Fig 1. TEA1795T Product data sheet Description plastic small outline package; 8 leads; body width 3.9 mm UVLO TIMER 0.4 μ ...
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... NXP Semiconductors 6. Pinning information 6.1 Pinning Fig 2. 6.2 Pin description Table 2. Symbol SSA GND GDA DSA DSB GDB V CC SSB 7. Functional description 7.1 Introduction The TEA1795T is a controller for synchronous rectification to be used in resonant applications. It can drive two synchronous rectifier MOSFETs on the secondary side of the central tap transformer winding ...
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... NXP Semiconductors V in PRIMARY CONTROLLER Fig 3. 7.2 Start-up and UnderVoltage LockOut (UVLO) The IC leaves the UVLO state and activates the synchronous rectifier circuitry when the voltage on the V 8.0 V (typical), the UVLO state is reentered and the SR MOSFET gate driver outputs are actively kept low. ...
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... NXP Semiconductors The zero current is detected by sensing a V the drain sense pins and the source sense pins (see rectification off-timer (t only be started when the synchronous rectification off-timer has finished. Fig 4. 7.5 Gate driver (GDA and GDB pins) The gate driver circuit to the gate of the external SR MOSFET has a source capability of typically 400 mA and a sink capability of typically 2 ...
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... NXP Semiconductors 8. Limiting values Table 3. In accordance with the Absolute Maximum Rating System (IEC 60134). All voltages are measured with respect to ground (pin 2); positive currents flow into the chip. Voltage ratings are valid provided other ratings are not violated; current ratings are valid provided the other ratings are not violated. ...
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... NXP Semiconductors 10. Characteristics Table 5. Characteristics ° all voltages are measured with respect to ground (pin 2); currents are positive when flowing into amb CC the IC; unless otherwise specified. Symbol Parameter Supply voltage management (pin V V start-up voltage startup V hysteresis voltage hys I operating supply current ...
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... NXP Semiconductors 11. Application information A switched mode power supply with the TEA1795T consists of a primary side half bridge, a transformer, a resonant capacitor and an output stage. In the output stage SR MOSFETs are used to obtain low conduction loss rectification. These SR MOSFETs are controlled by the TEA1795T. The timing for the synchronous rectifier switch is derived from the voltage difference between the corresponding drain sense and source sense pins ...
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... NXP Semiconductors 11.2 Application diagram multi-output flyback application V in Fig 6. TEA1795T Product data sheet TR R DRNSENSE1 1 kΩ Q prim Q sec1 PRIMARY SIDE CONTROLLER Multi-output flyback application with TEA1795T All information provided in this document is subject to legal disclaimers. Rev. 1 — 4 November 2010 TEA1795T ...
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... NXP Semiconductors 12. Package outline SO8: plastic small outline package; 8 leads; body width 3 pin 1 index 1 DIMENSIONS (inch dimensions are derived from the original mm dimensions) A UNIT max. 0.25 1.45 mm 1.75 0.25 0.10 1.25 0.010 0.057 inches 0.069 0.01 0.004 0.049 Notes 1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. ...
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... NXP Semiconductors 13. Revision history Table 6. Revision history Document ID Release date TEA1795T v.1 20101104 TEA1795T Product data sheet GreenChip synchronous rectifier controller Data sheet status Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 1 — 4 November 2010 TEA1795T Change notice ...
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... In no event shall NXP Semiconductors be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or ...
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... For sales office addresses, please send an email to: TEA1795T Product data sheet own risk, and (c) customer fully indemnifies NXP Semiconductors for any liability, damages or failed product claims resulting from customer design and use of the product for automotive applications beyond NXP Semiconductors’ ...
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... NXP Semiconductors 16. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features and benefits . . . . . . . . . . . . . . . . . . . . 1 2.1 Distinctive features . . . . . . . . . . . . . . . . . . . . . . 1 2.2 Green features . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.3 Protection features . . . . . . . . . . . . . . . . . . . . . . 1 3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 5 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2 6 Pinning information . . . . . . . . . . . . . . . . . . . . . . 3 6.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3 7 Functional description . . . . . . . . . . . . . . . . . . . 3 7.1 Introduction 7.2 Start-up and UnderVoltage LockOut (UVLO ...