tea1532ct-n1 NXP Semiconductors, tea1532ct-n1 Datasheet
tea1532ct-n1
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tea1532ct-n1 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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... I Soft (re)start I Mains voltage-dependent operation-enabling level I 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 I TEA1532BT: general purpose input for latched protection and timing, e. used for OVP, output short-circuit protection or system OTP ...
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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 UVLO start AND CCM DETECTION LOGIC Osc_Rdy LOGIC Duty_Max POWER- RESET R ...
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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 mains(oper)(en) 1 ...
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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 and allowing high frequency operation, which P ...
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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. VCC SENSE – I ...
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... V). A (small) discharge current is also implemented to ensure that the 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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... The driver circuit to the gate of the power MOSFET has a current sourcing capability of typically 170 mA and a current sink capability of typically 700 mA. This permits fast turn-on and turn-off of the power MOSFET for efficient operation. TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT level, however switching will not restart. Subsequently, V startup , etc. th(UVLO) is disconnected for a short period) ...
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... Equivalent to discharging a 200 pF capacitor through a 0.75 H coil and Thermal characteristics 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 Conditions supply voltage continuous voltage on pin PROTECT continuous voltage on pin CTRL voltage on pin DEM current limited voltage on pin SENSE ...
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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 Conditions [1] V < 2.3 V PROTECT V < 0.63 V CTRL [ 0 0 < 0.5 V SENSE [3] A constant I ...
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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 TEA1532BT TEA1532CT PROTECT 3 CTRL 4 R CTRL Rev. 01 — 18 January 2007 GreenChip II SMPS control IC DRAIN 8 power DRIVER 7 MOSFET SENSE DEM ...
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... V startup DRIVER V PROTECT (1) In CCM, the brown-out protection is implemented by the maximum duty cycle in combination Fig 10. Typical waveforms 1 TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT V th(UVLO) 2.5 V start-up normal sequence operation TEA1532CT with pin PROTECT. Rev. 01 — 18 January 2007 GreenChip II SMPS control IC OVP ...
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... NXP Semiconductors (1) When V (2) External OTP for TEA1532BT and TEA1532CT; OVP and output short circuit for TEA1532BT. Fig 11. Typical waveforms 2 TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT DRAIN startup DRIVER (1) V PROTECT start-up sequence is forced above 3 V, the protection is always latched. So the IC is not started at ...
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... The pin PROTECT is used in this example for external OTP and open loop or output 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 ...
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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 ...
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... NXP Semiconductors 14. Revision history Table 6. Revision history Document ID Release date TEA1532BT_TEA1532CT_1 20070118 TEA1532BT_TEA1532CT_1 Product data sheet TEA1532BT; TEA1532CT Data sheet status Change notice Product data sheet - Rev. 01 — 18 January 2007 GreenChip II SMPS control IC 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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... Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © 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 Document identifier: TEA1532BT_TEA1532CT_1 All rights reserved. Date of release: 18 January 2007 ...