TEA1532CT NXP Semiconductors, TEA1532CT Datasheet
TEA1532CT
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TEA1532CT Summary of contents
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... A second low voltage, Bipolar CMOS (BICMOS used for accurate, high speed protection functions and control. The TEA1532BT; TEA1532CT enables highly efficient and reliable supplies to be designed easily. 2. Features 2.1 Distinctive features ...
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... Low and adjustable OverCurrent Protection (OCP) trip level Soft (re)start Mains voltage-dependent operation-enabling level TEA1532CT: general purpose input for latched or safe restart protection and timing, e. used for OverVoltage Protection (OVP), output short-circuit protection or system OTP TEA1532BT: general purpose input for latched protection and timing, e. used ...
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... V control detect 0. PROTECT 300 5 dch (1) Switch S3 is not controlled in the TEA1532BT (fixed as drawn). Fig 1. Block diagram TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT SUPPLY MANAGEMENT DCM AND internal UVLO start supply CCM DETECTION OSCILLATOR LOGIC Osc_Rdy LOGIC Duty_Max 1 POWER-ON ...
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... CTRL DEM SENSE DRIVER DRAIN 7. Functional description The TEA1532BT; TEA1532CT is a controller for a compact flyback converter with the IC situated on the primary side. An auxiliary winding of the transformer provides demagnetization detection and powers the IC after start-up; see TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT ...
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... NXP Semiconductors Fig 3. Basic configuration The TEA1532BT; TEA1532CT can operate in multi modes; see Fig 4. Multi mode and FF-CCM operation In QR mode, the next converter stroke is started only after demagnetization of the transformer current (zero current switching), while the drain voltage has reached the lowest voltage to minimize switching losses (green function) ...
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... V. This means that a voltage range from approximately 1 pin CTRL will result in an internal control voltage range from 0 high external control voltage results in a low duty cycle). TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT Figure 9 and Figure 10. Initially, the IC is self supplying from the rectified mains ...
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... As soon as the oscillator voltage is high again and the secondary stroke has ended, the circuit waits for the lowest drain voltage before starting a new primary stroke. This method is called valley detection. signal and the oscillator signal. TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT V (V) sense(max) 0. ...
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... OCP level. Thus, a longer on-time results in a higher CTRL voltage. However, this increase in CTRL voltage will actually decrease the on-time. Slope compensation can be adjusted by changing the TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT ...
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... The start level and the time constant of the increasing primary current level can be adjusted externally by changing the values TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT . Slope compensation prevents modulation of the on-time (duty cycle) slopecomp CTRL removed). The IC stops switching and enters the safe restart mode. ...
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... CTRL (V CTRL capacitor is not charged, for example, by spikes. A MOSFET switch is added to discharge the external capacitor and ensure a defined start situation. For the TEA1532CT, the voltage on pin CTRL determines whether the IC enters latched protection mode, or safe restart protection mode: • ...
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... MOSFET for efficient operation. TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT protection is reset. The latch is reset as soon as V (this only occurs when the mains has been disconnected). The internal overtemperature protection will also trigger this latch; see also level, however switching will not restart ...
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... Table 4. Thermal characteristics Symbol Parameter R thermal resistance from junction to th(j-a) ambient TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT Limiting values Parameter supply voltage voltage on pin PROTECT voltage on pin CTRL voltage on pin DEM voltage on pin SENSE voltage on pin DRAIN current on pin CTRL current on pin DEM ...
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... Pulse width modulator t minimum on-time on(min) t maximum on-time on(max) maximum duty cycle max Oscillator f oscillator frequency osc TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT Conditions V > 100 V DRAIN with auxiliary supply ) startup th(UVLO) V > 100 V; DRAIN V < ...
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... I soft startup current startup(soft) Brown-out protection (pin DEM) I brownout protection prot(bo) current t brownout protection en(prot)bo enable time TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT …continued Conditions V < 2.3 V PROTECT V < 0.63 V CTRL 0 0 < 0.5 V SENSE A constant I is prot(bo) drawn from pin DEM. Rev. 01 — ...
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... Set by the demagnetization resistor R i 11. Application information A converter with the TEA1532BT; TEA1532CT consists of an input filter, a transformer with a third winding (auxiliary), and an output stage with a feedback circuit. Capacitor C source, that is connected to the rectified mains during start-up and, via the auxiliary winding, during operation ...
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... NXP Semiconductors Fig 9. Flyback configuration using the discontinuous conduction mode TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT V mains GND 2 7 TEA1532BT TEA1532CT PROTECT 3 6 CTRL CTRL Rev. 01 — 18 January 2007 GreenChip II SMPS control IC DRAIN power DRIVER ...
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... NXP Semiconductors V V drain of power MOSFET Fig 10. Typical waveforms 1 TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT startup V CC th(UVLO) DRIVER 2.5 V PROTECT start-up normal sequence operation (1) In CCM, the brown-out protection is implemented by the maximum duty cycle in combination with pin PROTECT. ...
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... V, the protection is always latched. So the IC is not started at PROTECT V unless the V voltage drops below the V startup CC used for external OTP compensation described in (2) External OTP for TEA1532BT and TEA1532CT; OVP and output short circuit for TEA1532BT. Rev. 01 — 18 January 2007 GreenChip II SMPS control IC V th(UVLO) 2.5 V normal protection ...
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... NXP Semiconductors Fig 12. Flyback configuration using the continuous conduction mode 12. Test information 12.1 Quality information The General Quality Specification for Integrated Circuits, SNW-FQ-611 is applicable. TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT V mains GND 2 TEA1532BT (1) TEA1532CT PROTECT 3 CTRL ...
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... Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. 2. Plastic or metal protrusions of 0.25 mm (0.01 inch) maximum per side are not included. OUTLINE VERSION IEC SOT96-1 076E03 Fig 13. Package outline SOT96-1 (SO8) TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT pin 1 index 4 ...
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... NXP Semiconductors 14. Revision history Table 6. Revision history Document ID TEA1532BT_TEA1532CT_1 20070118 TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT Release date Data sheet status Product data sheet Rev. 01 — 18 January 2007 GreenChip II SMPS control IC Change notice Supersedes - - © NXP B.V. 2007. All rights reserved. ...
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... Contact information For additional information, please visit: For sales office addresses, send an email to: TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT [3] Definition This document contains data from the objective specification for product development. This document contains data from the preliminary specification. ...
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... NXP B.V. 2007. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 18 January 2007 Document identifier: TEA1532BT_TEA1532CT_1 All rights reserved. Datasheet pdf - http://www.DataSheet4U.net/ ...