TEA1742T/N1,118 NXP Semiconductors, TEA1742T/N1,118 Datasheet
TEA1742T/N1,118
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TEA1742T/N1,118 Summary of contents
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TEA1742T GreenChip PFC controller Rev. 01 — 10 February 2009 1. General description The TEA1742T is a controller for Power Factor Correction (PFC). Its high level of integration allows the design of a cost-effective power supply with a very low ...
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... NXP Semiconductors 3. Applications I The device can be used in all applications that require an efficient and cost-effective PFC solution up to 500 W. PC power supplies in particular can benefit from the high level of integration and high efficiency 4. Ordering information Table 1. Ordering information Type number ...
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... NXP Semiconductors 5. Block diagram VINSENSE 2 PFCCOMP 3 VOSENSE 5 PFCSENSE 6 PFCAUX 4 Fig 1. Block diagram TEA1742T_1 Objective data sheet PFCDRIVER PFC DRIVER 1.12 V 3.5 V PFC GATE LOW VIN PFC PROT MAX BOOST PROT ENABLE PFC 1.25 V PFC 3.7 V OSC 2. START V UVLO BOOST LOW VIN ...
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... NXP Semiconductors 6. Pinning information 6.1 Pinning Fig 2. 6.2 Pin description Table 2. Symbol GND VINSENSE PFCCOMP PFCAUX VOSENSE PFCSENSE PFCDRIVER V CC TEA1742T_1 Objective data sheet GND 1 VINSENSE 2 3 PFCCOMP PFCAUX 4 Pin configuration: TEA1742T (SOT96-1) Pin description Pin Description 1 ground 2 sense input for mains voltage ...
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... NXP Semiconductors 7. Functional description 7.1 General control The TEA1742T contains a controller for a power factor correction circuit. A typical configuration is shown in Fig 3. 7.1.1 Start-up and UnderVoltage LockOut (UVLO) The control logic activates the internal circuitry when the voltage on pin V V startup soft start capacitor on the PFCSENSE pin is charged, the PFC circuit is activated. See Figure 4 ...
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... NXP Semiconductors VINSENSE PFCSENSE PFCDRIVER VOSENSE Fig 4. 7.1.2 Supply management All internal reference voltages are derived from a temperature compensated and trimmed on-chip band gap circuit. Internal reference currents are derived from a temperature compensated and trimmed on-chip current reference circuit. 7.1.3 OverTemperature Protection (OTP) An accurate internal temperature protection is provided in the circuit ...
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... NXP Semiconductors 7.2.2 Valley switching and demagnetization (PFCAUX pin) The PFC MOSFET is switched on after the transformer is demagnetized. Internal circuitry connected to the PFCAUX pin detects the end of the secondary stroke. It also detects the voltage across the PFC MOSFET. The next stroke is started if the voltage across the PFC MOSFET is at its minimum in order to reduce switching losses and ElectroMagnetic Interference (EMI) (valley switching) ...
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... NXP Semiconductors The charging current I 0.5 V (typ). If the voltage on pin PFCSENSE exceeds 0.5 V, the soft start current source starts limiting the current I I start(soft)PFC Fig 5. 7.2.6 Dual boost PFC The PFC output voltage is modulated by the mains input voltage. The mains input voltage is measured via the VINSENSE pin ...
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... NXP Semiconductors 7.2.7 Overcurrent protection (PFCSENSE pin) The maximum peak current is limited cycle-by-cycle by sensing the voltage across an external sense resistor, R measured via the PFCSENSE pin. 7.2.8 Mains undervoltage lockout / brownout protection (VINSENSE pin) To prevent the PFC from operating at very low mains input voltages, the voltage on the VINSENSE pin is sensed continuously ...
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... NXP Semiconductors Table 3. In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Currents I PFCSENSE I PFCDRIVER General P tot T stg T j ESD V ESD [1] Equivalent to discharging a 100 pF capacitor through a 1.5 k series resistor. [2] Equivalent to discharging a 200 pF capacitor through a 0.75 H coil and Thermal characteristics Table 4 ...
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... NXP Semiconductors Table 5. Characteristics …continued 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 I pull-up current on pin pu(VINSENSE) VINSENSE V maximum mains voltage mvc(VINSENSE)max compensation voltage on pin VINSENSE I input current on pin VINSENSE VINSENSE > V ...
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... NXP Semiconductors Table 5. Characteristics …continued 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 Soft start PFC (pin PFCSENSE) I PFC soft start current start(soft)PFC V PFC soft start voltage ...
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... NXP Semiconductors 11. Application information Capacitor C means. Sense resistor R voltage at pin PFCSENSE. The value of R current in MOSFETS S1 added to prevent the soft start capacitor from being charged during normal S1 operation due to negative voltage spikes across the sense resistor. Resistor R Fig 7. TEA1742T_1 Objective data sheet ...
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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 TEA1742T_1 20090210 TEA1742T_1 Objective data sheet Data sheet status Change notice Objective data sheet - Rev. 01 — 10 February 2009 TEA1742T GreenChip PFC controller Supersedes - © NXP B.V. 2009. All rights reserved ...
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... Right to make changes — NXP Semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice ...
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... NXP Semiconductors 16. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.1 Distinctive features . . . . . . . . . . . . . . . . . . . . . . 1 2.2 Green features . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.3 Protection features . . . . . . . . . . . . . . . . . . . . . . 1 3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 5 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6 Pinning information . . . . . . . . . . . . . . . . . . . . . . 4 6.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 6.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 7 Functional description . . . . . . . . . . . . . . . . . . . 5 7.1 General control . . . . . . . . . . . . . . . . . . . . . . . . . 5 7.1.1 Start-up and UnderVoltage LockOut (UVLO ...