tea1733bt NXP Semiconductors, tea1733bt Datasheet

no-image

tea1733bt

Manufacturer Part Number
tea1733bt
Description
Greenchip Smps Control Ic
Manufacturer
NXP Semiconductors
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
TEA1733BT
Manufacturer:
NXP/恩智浦
Quantity:
20 000
1. General description
2. Features and benefits
2.1 Features
The TEA1733BT 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 TEA1733BT 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 TEA1733BT 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.
TEA1733BT
GreenChip SMPS control IC
Rev. 3 — 27 June 2011
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 (10 A typical)
Low supply current during normal operation (0.55 mA typical 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
Product data sheet

Related parts for tea1733bt

tea1733bt Summary of contents

Page 1

... GreenChip SMPS control IC Rev. 3 — 27 June 2011 1. General description The TEA1733BT 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. ...

Page 2

... Q R soft start latch S stop Q R latch reset latch VINSENSE DIGITAL CONTROL All information provided in this document is subject to legal disclaimers. Rev. 3 — 27 June 2011 TEA1733BT GreenChip SMPS control overpower 2.5 V driver OTP OSCILLATOR MODULATION ANALOG SLOPE CONTROL COMPENSATION prothigh VCCstop overpower 0 ...

Page 3

... All information provided in this document is subject to legal disclaimers. Rev. 3 — 27 June 2011 TEA1733BT GreenChip SMPS control IC 8 OPTIMER 7 CTRL TEA1733BT 6 PROTECT 5 VINSENSE 014aab279 © NXP B.V. 2011. All rights reserved ...

Page 4

... NXP Semiconductors 7. Functional description 7.1 General control The TEA1733BT contains a flyback circuit controller, a typical configuration of which is shown Θ Z1 Fig 3. Typical configuration 7.2 Start-up and UnderVoltage LockOut (UVLO) Initially, the capacitor on the VCC pin is charged from the high voltage mains via resistor R3 ...

Page 5

... Start-up sequence, normal operation and restart sequence voltage (0.94 V typical). (3.52 V typical), the converter stops switching and performs a restart. (0.8 V typical) or below V det(H)(PROTECT) All information provided in this document is subject to legal disclaimers. Rev. 3 — 27 June 2011 TEA1733BT GreenChip SMPS control IC V startup V th(UVLO) soft start ...

Page 6

... Overpower delay voltage is reached the device restarts. prot(OPTIMER) prot(OPTIMER) All information provided in this document is subject to legal disclaimers. Rev. 3 — 27 June 2011 TEA1733BT GreenChip SMPS control IC Figure 3), a temporary overload 1) is set by pin CTRL. When V voltage (2.5 V typical) the prot(OPTIMER) Figure 5) ...

Page 7

... Peak current control t leb V sense(max) V ISENSE Leading edge blanking 8). All information provided in this document is subject to legal disclaimers. Rev. 3 — 27 June 2011 TEA1733BT GreenChip SMPS control IC Figure 6). 014aaa931 (V) CTRL Figure 7). t 014aaa932 © NXP B.V. 2011. All rights reserved. ...

Page 8

... Overpower compensation Section 7.10). Figure 6 and f sw (kHz) switching frequency Frequency control All information provided in this document is subject to legal disclaimers. Rev. 3 — 27 June 2011 TEA1733BT GreenChip SMPS control (V) VINSENSE 014aaa933 Figure 3) on the ISENSE pin is Figure 9 (V) ...

Page 9

... T amb class 1 human body model machine model charged device model All information provided in this document is subject to legal disclaimers. Rev. 3 — 27 June 2011 TEA1733BT GreenChip SMPS control IC Min Max Unit 0.4 + 0.4 +5 ...

Page 10

... Conditions activated during restart activated during latched protection  startup th(UVLO) V < startup detection level = 50 A I I(VINSENSE) All information provided in this document is subject to legal disclaimers. Rev. 3 — 27 June 2011 TEA1733BT GreenChip SMPS control IC Typ Unit 150 K/W 79 K/W Min Typ Max 18.6 20.6 22.6 11.2 12.2 13.2 - ...

Page 11

... OPTIMER capacitor discharging OPTIMER capacitor V = 0.78 V VINSENSE V/t = 200 mV/ 0.78 V VINSENSE V/ mV/s All information provided in this document is subject to legal disclaimers. Rev. 3 — 27 June 2011 TEA1733BT GreenChip SMPS control IC Min Typ Max 34 32 30 87 107 127 [1] 3.5 4.1 4 ...

Page 12

... V; VINSENSE V > 400 mV sense(max CTRL enable voltage DRIVER DRIVER DRIVER All information provided in this document is subject to legal disclaimers. Rev. 3 — 27 June 2011 TEA1733BT GreenChip SMPS control IC Min Typ Max 250 300 350 - 0. 1.7 - 63 55  sense(max) ...

Page 13

... NXP Semiconductors 11. Application information A power supply with the TEA1733BT is a flyback converter operating in Continuous conduction mode (see Capacitor C5 buffers the IC supply voltage, which is powered via resistor R3 at start-up and via the auxiliary winding during normal operation. Sense resistor R9 converts the current through MOSFET S1 into a voltage on pin ISENSE. The value of R9 defines the maximum primary peak current on MOSFET S1 ...

Page 14

... REFERENCES JEDEC JEITA MS-012 All information provided in this document is subject to legal disclaimers. Rev. 3 — 27 June 2011 TEA1733BT GreenChip SMPS control θ detail ...

Page 15

... Product data sheet Data sheet status Product data sheet Objective data sheet Objective data sheet All information provided in this document is subject to legal disclaimers. Rev. 3 — 27 June 2011 TEA1733BT GreenChip SMPS control IC Change notice Supersedes - TEA1733BT v.2 - TEA1733BT v © NXP B.V. 2011. All rights reserved ...

Page 16

... Export control — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from national authorities. All information provided in this document is subject to legal disclaimers. Rev. 3 — 27 June 2011 TEA1733BT GreenChip SMPS control IC © NXP B.V. 2011. All rights reserved ...

Page 17

... Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. GreenChip — trademark of NXP B.V. http://www.nxp.com salesaddresses@nxp.com All information provided in this document is subject to legal disclaimers. Rev. 3 — 27 June 2011 TEA1733BT GreenChip SMPS control IC © NXP B.V. 2011. All rights reserved ...

Page 18

... 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. 2011. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com All rights reserved. Date of release: 27 June 2011 Document identifier: TEA1733BT ...

Related keywords