L4981AD013TR STMicroelectronics, L4981AD013TR Datasheet

IC PFC CTRLR AVERAGE CURR 20SOIC

L4981AD013TR

Manufacturer Part Number
L4981AD013TR
Description
IC PFC CTRLR AVERAGE CURR 20SOIC
Manufacturer
STMicroelectronics
Datasheet

Specifications of L4981AD013TR

Mode
Average Current
Frequency - Switching
100kHz
Current - Startup
100µA
Voltage - Supply
14.5 V ~ 19.5V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
20-SOIC (7.5mm Width)
Switching Frequency
115 KHz
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
For Use With
497-5523 - EVAL BOARD FOR L4981
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-4562-2
E-L4981AD013TR

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DESCRIPTION
The L4981 I.C. provides the necessary features
to achieve a very high power factor up to 0.99.
Realized in BCD 60II technology this power factor
corrector (PFC) pre-regulator contains all the con-
BLOCK DIAGRAM
November 2001
CONTROL BOOST PWM UP TO 0.99P.F.
LIMIT LINE CURRENT DISTORTION TO < 5%
UNIVERSAL INPUT MAINS
FEED FORWARD LINE AND LOAD REGULA-
TION
AVERAGE CURRENT MODE PWM FOR
MINIMUM NOISE SENSITIVITY
HIGH CURRENT BIPOLAR AND DMOS TO-
TEM POLE OUTPUT
LOW START-UP CURRENT (0.3mA TYP.)
UNDER VOLTAGE LOCKOUT WITH HYS-
TERESIS AND PROGRAMMABLE TURN ON
THRESHOLD
OVERVOLTAGE, OVERCURRENT PROTEC-
TION
PRECISE 2% ON CHIP REFERENCE EX-
TERNALLY AVAILABLE
SOFT START
®
POWER FACTOR CORRECTOR
trol functions for designing a high efficiency-mode
power supply with sinusoidal line current con-
sumption.
The L4981 can be easily used in systems with
mains voltages between 85V to 265V without any
line switch. This new PFC offers the possibility to
work at fixed frequency (L4981A) or modulated
frequency (L4981B) optimizing the size of the in-
MULTIPOWER BCD TECHNOLOGY
ORDERING NUMBERS: L4981X (DIP20)
DIP20
L4981XD (SO20)
L4981A
L4981B
SO20
1/16

Related parts for L4981AD013TR

L4981AD013TR Summary of contents

Page 1

CONTROL BOOST PWM UP TO 0.99P.F. LIMIT LINE CURRENT DISTORTION TO < 5% UNIVERSAL INPUT MAINS FEED FORWARD LINE AND LOAD REGULA- TION AVERAGE CURRENT MODE PWM FOR MINIMUM NOISE SENSITIVITY HIGH CURRENT BIPOLAR AND DMOS TO- TEM POLE ...

Page 2

L4981A - L4981B put filter; both the operating frequency modes working with an average current mode PWM con- troller, maintaining sinusoidal line current without slope compensation. Besides power MOSFET gate driver, precise volt- age reference (externally available), error ampli- fier, ...

Page 3

THERMAL DATA Symbol R Thermal Resistance Junction-ambient th j-amb PIN FUNCTIONS N. Name 1 P-GND Power ground. 2 IPK L4981A peak current limiting. A current limitation is obtained using a single resistor connected between Pin 2 and the sense resistor. ...

Page 4

L4981A - L4981B ELECTRICAL CHARACTERISTICS (Unless otherwise specified 24K , OSC SS CA-OUT V = GND 1V, V FEED IPK OVP Symbol Prameter ERROR AMPLIFIER SECTION V Input Offset Voltage ...

Page 5

ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter SUPPLY VOLTAGE V Operating Supply Voltage CC OVER VOLTAGE PROTECTION COMPARATOR V Rising Threshold Voltage thr V Hysteresis 3Hys I Input Bias Current 3 t Propagation delay to output d OVER CURRENT PROTECTION COMPARATOR V ...

Page 6

L4981A - L4981B ELECTRICAL CHARACTERISTICS (continued) Symbol Prameter MULTIPLIER SECTION Multipler Output Current K Multiplier Gain V VA OUT MULT OUT LFF REF MULT OUT AC where ...

Page 7

Figure 3: MULTI-OUT vs 5.1V) LFFD Figure 5: MULTI-OUT vs 2.5V) LFFD Figure 7: MULTI-OUT vs 2.5V) LFFD (V = 4.4V; Figure 4: MULTI-OUT vs. I RMS (V ...

Page 8

L4981A - L4981B Figure 9A: L4981A Power Factor Corrector (200W) R17 806K 1% R17 806K 1% FUSE BRIDGE BY214 220nF Vi 400V 88V AC to 254V AC R11 NTC 560 1% R21 5. 80kHz; ...

Page 9

Figure 10: Reference Voltage vs. Source Refer- ence Current Figure 12: Reference Voltage vs. Junction Tem- perature Figure 14: Gate Driver Rise and Fall Time L4981A - L4981B Figure 11: Reference Voltage vs. Supply Voltage Figure 13: Switching Frequency vs. ...

Page 10

L4981A - L4981B Figure 16: Programmable Under Voltage Lock- out Thresholds R23 (Kohm) Table 1: Programmable Under Voltage Lockout Thresholds 11V 12V 13V 14V 14.5V 15V Figure 18: Oscillator Diagram 10/16 Figure 17: Modulation Frequency Normalized in ...

Page 11

Figure 19: Demo Board Circuit (V BRIDGE T15A250V 88 to 264 Vac Cf .22uF 600V RAux1 ** RAux2 Figure 20: Component Layout (Dimensions 88 x 150mm). = 400V 360W R14 68 B2= D1+D2 ...

Page 12

L4981A - L4981B Figure 20: P.C.B. Component Side (Dimensions 88 x 150mm). Figure 20: P.C.B. Solder Side (Dimensions 88 x 150mm). 12/16 ...

Page 13

DEMO BOARD EVALUATION RESULTS Table 2. Nominal Power range at 110Vac mains out 88Vac 366W 110Vac 370W 132Vac 372W Table 3. Nominal Power range at 220Vac mains out 176Vac 378W 220Vac 381W 264Vac 381W REFERENCE: AN628 ...

Page 14

L4981A - L4981B mm DIM. MIN. TYP. MAX. A 2.35 2.65 0.093 A1 0.1 0.3 0.004 B 0.33 0.51 0.013 C 0.23 0.32 0.009 D 12.6 13 0.496 E 7.4 7.6 0.291 e 1. 10.65 0.394 h 0.25 ...

Page 15

DIM. MIN. TYP. MAX. MIN. a1 0.254 0.010 B 1.39 1.65 0.055 b 0.45 b1 0.25 D 25.4 E 8.5 e 2.54 e3 22.86 F 7.1 I 3.93 L 3.3 Z 1.34 inch MECHANICAL DATA TYP. MAX. 0.065 0.018 ...

Page 16

... This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. © 2001 STMicroelectronics – Printed in Italy – All Rights Reserved Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States ...

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