DatasheetsPDF.com

TEA1733MT Dataheets PDF



Part Number TEA1733MT
Manufacturers NXP
Logo NXP
Description GreenChip SMPS control IC
Datasheet TEA1733MT DatasheetTEA1733MT Datasheet (PDF)

TEA1733MT GreenChip SMPS control IC Rev. 1 — 4 February 2011 Preliminary data sheet 1. General description The TEA1733MT is a low cost Switched Mode Power Supply (SMPS) controller IC intended for flyback topologies. It operates in fixed frequency mode. Frequency jitter has been implemented to reduce ElectroMagnetic Interference (EMI). Slope compensation is integrated for Continuous Conduction Mode (CCM) operation. The TEA1733MT IC includes OverPower Protection (OPP). This enables the controlle.

  TEA1733MT   TEA1733MT



Document
TEA1733MT GreenChip SMPS control IC Rev. 1 — 4 February 2011 Preliminary data sheet 1. General description The TEA1733MT is a low cost Switched Mode Power Supply (SMPS) controller IC intended for flyback topologies. It operates in fixed frequency mode. Frequency jitter has been implemented to reduce ElectroMagnetic Interference (EMI). Slope compensation is integrated for Continuous Conduction Mode (CCM) operation. The TEA1733MT IC includes OverPower Protection (OPP). This enables the controller to operate under overpower situations for a limited amount of time. Two pins, VINSENSE and PROTECT, are reserved for protection purposes. Input UnderVoltage Protection (UVP) and OverVoltage Protection (OVP), output OVP and OverTemperature Protection (OTP) can be implemented using a minimal number of external components. At low power levels the primary peak current is set to 25 % of the maximum peak current and the switching frequency is reduced to limit switching losses. The combination of fixed frequency operation at high output power and frequency reduction at low output power provides high-efficiency over the total load range. The TEA1733MT enables low-cost, highly efficient and reliable supplies for power requirements up to 75 W to be designed easily and with a minimum number of external components. 2. Features and benefits 2.1 Features „ SMPS controller IC enabling low-cost applications „ Large input voltage range (12 V to 30 V) „ Very low supply current during start-up and restart (typically 10 μA) „ Low supply current during normal operation (typically 0.55 mA without load) „ Overpower or high/low line compensation „ Adjustable overpower time-out „ Adjustable overpower restart timer „ Fixed switching frequency with frequency jitter to reduce EMI „ Frequency reduction with fixed minimum peak current to maintain high-efficiency at low output power levels „ Slope compensation for CCM operation „ Low and adjustable OverCurrent Protection (OCP) trip level NXP Semiconductors TEA1733MT GreenChip SMPS control IC „ Adjustable soft start operation „ Two protection inputs (e.g. for input UVP and OVP, OTP and output OVP) „ IC overtemperature protection 3. Applications „ All applications requiring efficient and cost-effective power supply solutions up to 75 W. 4. Ordering information Table 1. Ordering information Type number Package Name Description TEA1733MT SO8 plastic small outline package; 8 leads; body width 3.9 mm Version SOT96-1 TEA1733MT Preliminary data sheet All information provided in this document is subject to legal disclaimers. Rev. 1 — 4 February 2011 © NXP B.V. 2011. All rights reserved. 2 of 20 NXP Semiconductors 5. Block diagram TEA1733MT GreenChip SMPS control IC 1 VCC 22 V 2 GND clamp clamp power down 21 V VCCstart Vctrl(Ipeak) 400 mV 12 V VCCstop 6V DQ driver overpower 2.5 V latch 5 V restart latch reset OPP switch TEMPERATURE PROTECTION OTP RESTART CONTROL OPP switch 107 μA set δmax OSCILLATOR frequency reduction OPTIMER 1.2 V / 4.5 V Vctrl(Ipeak) ANALOG CONTROL MODULATION SLOPE COMPENSATION 11 μA 8 OPTIMER 5.4 V 7 kΩ 7 CTRL DRIVER DRV 3 S Q R set stop δmax ISENSE 55 μA 4 BLANK soft start LEB restart Vctrl(Ipeak) OVERPOWER CORRECTION OCP soft start VINSENSE stop latch overload VCCstop QS overpower R driver stop δ max prot COUNT δ max TO 8 restart S Q R latch S Q δ max prot highvin lowvin VCCstart power down lowvin protlow OTP prothigh protlow overload R latch reset DIGITAL CONTROL prothigh protlow highvin lowvin 0.50 V/0.80 V 32 μA 6 107 μA PROTECT 3.52 V 0.72 V/0.94 V 5 VINSENSE Fig 1. Block diagram 001aan238 TEA1733MT Preliminary data sheet All information provided in this document is subject to legal disclaimers. Rev. 1 — 4 February 2011 © NXP B.V. 2011. All rights reserved. 3 of 20 NXP Semiconductors 6. Pinning information 6.1 Pinning TEA1733MT GreenChip SMPS control IC VCC 1 GND 2 DRIVER 3 ISENSE 4 8 OPTIMER 7 CTRL TEA1733MT 6 PROTECT 5 VINSENSE 001aan247 Fig 2. Pinning diagram SOT96-1 (SO8) 6.2 Pin description Table 2. Pin description Symbol Pin VCC 1 GND 2 DRIVER 3 ISENSE 4 VINSENSE 5 PROTECT 6 CTRL 7 OPTIMER 8 Description supply voltage ground gate driver output current sense input input voltage protection input general purpose protection input control input overpower and restart timer TEA1733MT Preliminary data sheet All information provided in this document is subject to legal disclaimers. Rev. 1 — 4 February 2011 © NXP B.V. 2011. All rights reserved. 4 of 20 NXP Semiconductors TEA1733MT GreenChip SMPS control IC 7. Functional description 7.1 General control The TEA1733MT contains a flyback circuit controller, a typical configuration of which is shown in Figure 3. C1 R1 C2 R2 R3 R4 Θ Z1 TEA1733MT VINSENSE 5 4 ISENSE PROTECT 6 3 DRIVER R5 CTRL OPTIMER C3 7 8 2 GND 1 VCC C4 R8 C5 S1 R10 R6 C6 R9 Fig 3. Typical configuration R7 001aan248 7.2 Start-up and Und.


LGW2W561MELC50 TEA1733MT M201EW02-V9


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)