LC5540LD

LC5540LD Series Single-Stage Power Factor Corrected Off-Line Switching Regulators Features and Benefits • Integrated on-width control circuit (it realizes high power factor by average current control) • Integrated startup circuit (no external startup circuit necessary) • Integrated soft-start circuit (reduces power stress during start-up on the incorporated power MOSFET and rectifier) • Integrated bias assist circuit (improves the startup performance, suppresses VCC voltage droop during operation, allows reduction of VCC capacitor value as well as use of a ceramic capacitor) • Integrated Leading Edge Blanking (LEB) circuit • Integrated maximum on-time limit circuit • Dual-chip structure, with an avalanche-guaranteed power MOSFET (allows simplified surge suppressing circuits) • Protection features: ▫ Overcurrent protection (OCP): pulse-by-pulse ▫ Overvoltage protection (OVP): latched shutdown ▫ Overload protection (OLP): latched shutdown ▫ Thermal shutdown (TSD): latched shutdown Description LC5540LD series is a quasi-resonant topology switching power supply IC, designed for input capacitorless applications, and making it possible for systems to comply with the harmonics standard (IEC61000-3-2 class C). It incorporates separate controller and power MOSFET chips. The controller adapts the average current control method for realizing high power factors, and the quasi-resonant topology contributes to high efficiency and low EMI noise. The rich set of protection features helps to realize low component counts, and high performance-to-cost power supply. The LC5540LD devices are intended for isolated designs. The incorporated MOSFET has a VDSS(min) rating from 650 V (LC5545LD and LC5546LD) to 800 V (LC5548LD). The RDS(on)(max) is 1.9 Ω (LC5546LD) to 3.95 Ω (LC5545LD). It is capable of a maximum output power of 20 W on 230 VAC supply to 16 W on universal supply (LC5546LD) based on the thermal rating. Note that the maximum output power can be up to 120% to 140% of this value. However, it may be limited in applications with low output voltage or short duty cycle. Package: 8-pin DIP Not to scale Applications • LED lighting fixtures • LED light bulbs Typical Application F1 L1 D1 VAC C1 D3 D4 C2 C9 D9 U1 LC554xLD 8 D/ST C3 Control Part S/GND VCC OCP FB 1 2 3 4 R7 C5 R2 (Rocp) R3 C6 D7 PC1 C7 OVP 6 D5 S/GND 5 NF PC2 R6 D6 C17 R1 R9 PC1 R12 C4 DZ2 DZ1 C12 U2 C8 R5 D2 L2 T1 D8 PC2 C10 Q1 R13 R11 C13 R17 + C14 R16 R14 R15 R18 C15 R19 R20 C16 LED C11 R8 R10 R4 LC5540LD-DS SANKEN ELECTRIC CO., LTD. LC5540LD Series Single-Stage Power Factor Corrected Off-Line Switching Regulators Selection Guide Part Number LC5545LD LC5546LD LC5548LD MOSFET VDSS(min) (V) 650 800 RDS(on) (max) (Ω) 3.95 1.9 3.5 PWM Operation Frequency, fOSC(typ) (kHz) 72 60 72 On-Time tON(MAX)(typ) (μs) 9.3 11.2 9.3 POUT* (W) 230 VAC 13 20 13 Universal 10 16 10 *Based on the thermal rating; the allowable maximum output power can be up to 120% to 140% of this value. However, maximum output power may be limited in such an application with low output voltage or short duty cycle. The polarity value for current specifies a sink as "+," and a source as “−,” referencing the IC. Absolute Maximum Ratings Unless specifically noted, TA is 25°C Characteristic Drain Current1 Symbol LC5545LD IDPeak LC5546LD LC5548LD LC5545LD Single Pulse Avalanche Energy2 Input Voltage for Control Part (MIC) OCP Pin Voltage FB Pin Voltage OVP Pin Voltage Allowable Power Dissipation of MOSFET3 Operating Ambient Temperature Storage Temperature Channel Temperature 1Refer Notes Single pulse ILPeak = 2.0 A, VDD = 99 V, L = 10 mH ILPeak = 2.7 A, VDD = 99 V, L = 10 mH ILPeak = 2.3 A, VDD = 99 V, L = 10 mH Pins 8–1 Rating 2.5 4.0 2.6 47 Unit A A A mJ mJ mJ V V V V W °C °C °C EAS VCC VOCP VFB VOVP PD1 TOP Tstg Tch LC5546LD LC5548LD 8–1 2–1 3–1 4–1 6–1 86 56 35 −1.0 to 5.0 −0.3 to 7.0 −0.3 to 5.0 0.97 −55 to 125 −55 to 125 150 Mounted on a 15 mm × 15 mm PCB 8–1 ― ― ― to MOSFET Safe Operating Area Curve. 2Refer to MOSFET Avalanche Energy Derating Coefficient Curve. 3Refer to MOSFET Temperature versus Power Dissipation Curve. LC5540LD-DS SANKEN ELECTRIC CO., LTD. 2 LC5540LD Series Single-Stage Power Factor Corrected Off-Line Switching Regulators Electrical Characteristics of Control Part (MIC) TA = 25°C, VCC = 20 V, unless otherwise specified Characteristic Power Supply Startup Operation Operation Start Voltage Operation Stop Voltage* Circuit Current in Operation Startup Circuit Operation Voltage Startup Current Startup Current Threshold Biasing Voltage* Normal Operation LC5545LD PWM Operation Frequency fOSC LC5546LD LC5548LD LC5545LD Maximum On-Time FB Pin Control Minimum Voltage Maximum Feedback Current Leading Edge Blanking Time Quasi-Resonant Operation Threshold Voltage-1 Quasi-Resonant Operation Threshold Voltage-2 Protected Operation OCP Pin Overcurrent Protection (OCP) Threshold Voltage OCP Pin Source Current OCP Pin Overvoltage Protection (OVP) Operation Voltage Overload Protection (OLP) Threshold Voltage OVP Pin OVP Threshold Voltage VCC Pin OVP Threshold Voltage Thermal Shutdown Activating Temperature *VCC(BIAS) > VCC(OFF) always. VOCP IOCP VBD(OVP) VFB(OLP) VOVP(OVP) VCC(OVP) TJ(TSD) 3–1 3–1 3–1 4–1 6–1 2–1 – −0.66 −120 2.2 4.1 1.6 28.5 135 −0.60 −40 2.6 4.5 2.0 31.5 – −0.54 −10 3.0 4.9 2.4 34.0 – V μA V V V V °C tON(MAX) VFB(MIN) IFB(MAX) tON(LEB) VBD(TH1) VBD(TH2) LC5546LD LC5548LD 4–1 4–1 3–1 3–1 3–1 8–1 8–1 60 50 60 8.0 9.0 8.0 0.50 –40 − 0.14 0.11 72 60 72 9.3 11.2 9.3 0.85 –25 600 0.24 0.16 84 70 84 11.2 13.4 11.2 1.20 –10 − 0.34 0.21 kHz kHz kHz μs μs μs V μA ns V V VCC(ON) VCC(OFF) ICC(ON) VSTARTUP ICC(STARTUP) VCC(BIAS) VCC = 13 V 2–1 2–1 2–1 8–1 2–1 2–1 13.8 8.4 – 18 −8.5 9.5 15.1 9.4 – 21 −4.0 11.0 17.3 10.7 4.7 24 −1.5 12.5 V V mA V mA V Symbol Test Conditions Pins Min. Typ. Max. Unit LC5540LD-DS SANKEN ELECTRIC CO., LTD. 3 LC5540LD Series Single-Stage Power Factor Corrected Off-Line Switching Regulators ELECTRICAL CHARACTERISTICS (MOSFET) TA = 25°C, unless otherwise specified Characteristic Drain-to-Source Breakdown Voltage Drain Leakage Current On-Resistance Symbol LC5545LD VDSS IDSS LC5545LD RDS(ON) LC5546LD LC5548LD LC5545LD Switching Time tr LC5546LD LC5548LD LC5545LD Thermal Resistance Rθch-c LC5546LD LC5548LD Between channel and case; case temperature, TC , measured at the center of the marking side ― 8–1 8–1 LC5546LD LC5548LD 8–1 8–1 Test Conditions Pins Min. 650 650 800 ― ― ― ― ― ― ― ― ― ― Typ. ― ― ― ― ― ― ― ― ― ― ― ― ― Max. ― ― ― 300 3.95 1.9 3.5 250 400 400 42 35.5 40 Unit V V V μA Ω Ω Ω ns ns ns °C/W °C/W °C/W LC5540LD-DS SANKEN ELECTRIC CO., LTD. 4 LC5540LD Series Single-Stage Power Factor Corrected Off-Line Switching Regulators Characteristic Performance LC5545LD 100 MOSFET Safe Operating Area Curve S. O. A. Temperature Derating Coefficient Curve Safe Operating Area Temperature Derating Coefficient (%) 100 10 Drain Current, ID (A) 80 Drain current limited by on-resistance 0.1 ms 60 1 40 1 ms 20 0.1 0 0 25 50 75 100 125 150 Channel Temperature, Tch (°C) 0.01 1 To use this graph, apply the S.O.A temperature derating coefficient taken from the graph at the left 10 100 1000 Drain-to-Source Voltage, VDS (V) MOSFET Avalanche Energy Derating Coefficient Curve EAS Temperature Derating Coefficient (%) 100 MOSFET Temperature versus Power Dissipation Curve Allowable Power Dissipation, PD1 (W) 1.2 1.0 0.8 0.6 0.4 0.2 0 80 60 40 20 0 25 50 75 100 125 150 0 25 50 75 100 125 150 Channel Temperature, Tch (°C) 10 Ambient Temperature, TA (°C) Transient Thermal Resistance Curve Transient Thermal Resistance, Rθch-c (°C/W) 1 0.1 0.01 10–6 10–5 10–4 10–3 10–2 10–1 Time (s) LC5540LD-DS SANKEN ELECTRIC CO., LTD. 5 LC5540LD Series Single-Stage Power Factor Corrected Off-Line Switching Regulators Characteristic Performance LC5546LD 100 MOSFET Safe Operating Area Curve S. O. A. Temperature Derating Coefficient Curve Safe Operating Area Temperature Derating Coefficient (%) 100 10 Drain current limited by on-resistance 0.1 ms 60 Drain Current, ID (A) 80 1 1 ms 40 20 0.1 0 0 25 50 75 100 125 150 Channel Temperature, Tch (°C) 0.01 1 To use this graph, apply the S.O.A temperature derating coefficient taken from the graph at the left 10 100 1000 Drain-to-Source Voltage, VDS (V) MOSFET Avalanche Energy Derating Coefficient Curve EAS Temperature Derating Coefficient (%) 100 MOSFET Temperature versus Power Dissipation Curve Allowable Power Dissipation, PD1 (W) 1.2 1.0 0.8 0.6 0.4 0.2 0 80 60 40 20 0 25 50 75 100 125 150 0 25 50 75 100 125 150 Channel Temperature, Tch (°C) 10 Ambient Temperature, TA (°C) Transient Thermal Resistance Curve Transient Thermal Resistance, Rθch-c (°C/W) 1 0.1 0.01 10–6 10–5 10–4 10–3 10–2 10–1 Time (s) LC5540LD-DS SANKEN ELECTRIC CO., LTD. 6 LC5540LD Series Single-Stage Power Factor Corrected Off-Line Switching Regulators Characteristic Performance LC5548LD 100 MOSFET Safe Operating Area Curve S. O. A. Temperature Derating Coefficient Curve Safe Operating Area Temperature Derating Coefficient (%) 100 10 Drain current limited by on-resistance 0.1 ms 60 Drain Current, ID (A) 80 1 1 ms 40 20 0.1 0 0 25 50 75 100 125 150 Channel Temperature, Tch (°C) 0.01 1 To use this graph, apply the S.O.A temperature derating coefficient taken from the graph at the left 10 100 1000 Drain-to-Source Voltage, VDS (V) MOSFET Avalanche Energy Derating Coefficient Curve EAS Temperature Derating Coefficient (%) 100 MOSFET Temperature versus Power Dissipation Curve Allowable Power Dissipation, PD1 (W) 1.2 1.0 0.8 0.6 0.4 0.2 0 80 60 40 20 0 25 50 75 100 125 150 0 25 50 75 100 125 150 Channel Temperature, Tch (°C) 10 Ambient Temperature, TA (°C) Transient Thermal Resistance Curve Transient Thermal Resistance, Rθch-c (°C/W) 1 0.1 0.01 10–6 10–5 10–4 10–3 10–2 10–1 Time (s) LC5540LD-DS SANKEN ELECTRIC CO., LTD. 7 LC5540LD Series Single-Stage Power Factor Corrected Off-Line Switching Regulators Functional Functional Block Diagram VCC ② Control Part START UP TSD UVLO Reg Bias OVP ⑥ OVP S RQ OCP ③ Bottom Detection NF ⑤ OCP LEB Feedback Control Reg ④ FB OSC OLP Drv ① S/GND ⑧ D/ST Pin List Table Number 1 2 3 4 5 6 7 8 Name S/GND VCC OCP FB NF OVP – D/ST Function MOSFET source and GND pin for the Control Part Supply voltage input and Overvoltage Protection (OVP) signal input Overcurrent Protection (OCP), quasi-resonant signal input, and Overvoltage Protection (OVP) signal input Feedback phase-compensation input and Overload Protection (OLP) signal input No function; must be externally connected to S/GND pin with as short a trace as possible, for stable operation of the IC Overvoltage Protection (OVP) signal input Pin removed MOSFET drain pin and input of the startup current Pin-out Diagram S/GND 1 VCC 2 OCP 3 FB 4 6 OVP 5 NF 8 D/ST LC5540LD-DS SANKEN ELECTRIC CO., LTD. 8 LC5540LD Series Single-Stage Power Factor Corrected Off-Line Switching Regulators Package Outline Drawing, DIP8 9.4 ±0.3 8 5 b c 1.0 +0.3 -0.05 1 4 +0.3 1.52 -0.05 (7.6 TYP) 3.4 ±0.1 7.5 ±0.5 3.3 ±0.2 4.2 ±0.3 6.5 ±0.2 0.2 5 + 0. 1 - 0.0 5 LC a 2.54 TYP 0.89 TYP 0.5 ±0.1 Unit mm ： Leadframe Material Cu ： Pin treatment: Solder Plating Weight Approximately 0.51g ： ０～１５° ０～１５° a: Part #: 554x b: Lot number 3 digits, plus L st 1 letter: Last digit of year nd 2 letter: Month Jan to September: Numeric October: O November: N December: D rd 3 letter: Week Date 1 to 10: 1 Date 11 to 20: 2 Date 21 to 31: 3 c: Internal use control number Pb-free. Device composition compliant with the RoHS directive. LC5540LD-DS SANKEN ELECTRIC CO., LTD. 9 LC5540LD Series Single-Stage Power Factor Corrected Off-Line Switching Regulators Because reliability can be affected adversely by improper storage environments and handling methods, please observe the following cautions. Cautions for Storage • Ensure that storage conditions comply with the standard temperature (5°C to 35°C) and the standard relative humidity (around 40% to 75%); avoid storage locations that experience extreme changes in temperature or humidity. • Avoid locations where dust or harmful gases are present and avoid direct sunlight. • Reinspect for rust on leads and solderability of products that have been stored for a long time. Cautions for Testing and Handling When tests are carried out during inspection testing and other standard test periods, protect the products from power surges from the testing device, shorts between the product pins, and wrong connections. Remarks About Using Silicone Grease with a Heatsink • When silicone grease is used in mounting this product on a heatsink, it shall be applied evenly and thinly. If more silicone grease than required is applied, it may produce excess stress. • Volatile-type silicone greases may crack after long periods of time, resulting in reduced heat radiation effect. Silicone grease with low consistency (hard grease) may cause cracks in the mold resin when screwing the product to a heatsink. • Our recommended silicone greases for heat radiation purposes, which will not cause any adverse effect on the product life, are indicated below: Type G746 YG6260 SC102 Suppliers Shin-Etsu Chemical Co., Ltd. MOMENTIVE Performance Materials, Inc Dow Corning Toray Co., Ltd. Soldering • When soldering the products, please be sure to minimize the working time, within the following limits: 260±5°C 10±1 s (Flow, 2 times) 380±10°C 3.5±0.5 s (Solder iron, 1 time) • Soldering iron should be at a distance of at least 1.5 mm from the body of the products Electrostatic Discharge • When handling the products, the operator must be grounded. Grounded wrist straps worn should have at least 1 MΩ of resistance from the operator to ground to prevent shock hazard, and it should be placed near the operator. • Workbenches where the products are handled should be grounded and be provided with conductive table and floor mats. • When using measuring equipment such as a curve tracer, the equipment should be grounded. • When soldering the products, the head of soldering irons or the solder bath must be grounded in order to prevent leak voltages generated by them from being applied to the products. • The products should always be stored and transported in Sanken shipping containers or conductive containers, or be wrapped in aluminum foil. LC5540LD-DS SANKEN ELECTRIC CO., LTD. 10 LC5540LD Series Single-Stage Power Factor Corrected Off-Line Switching Regulators • The contents in this document are subject to changes, for improvement and other purposes, without notice. Make sure that this is the latest revision of the document before use. • Application and operation examples described in this document are quoted for the sole purpose of reference for the use of the products herein and Sanken can assume no responsibility for any infringement of industrial property rights, intellectual property rights or any other rights of Sanken or any third party which may result from its use. • Although Sanken undertakes to enhance the quality and reliability of its products, the occurrence of failure and defect of semiconductor products at a certain rate is inevitable. Users of Sanken products are requested to take, at their own risk, preventative measures including safety design of the equipment or systems against any possible injury, death, fires or damages to the society due to device failure or malfunction. • Sanken products listed in this document are designed and intended for the use as components in general purpose electronic equipment or apparatus (home appliances, office equipment, telecommunication equipment, measuring equipment, etc.). When considering the use of Sanken products in the applications where higher reliability is required (transportation equipment and its control systems, traffic signal control systems or equipment, fire/crime alarm systems, various safety devices, etc.), and whenever long life expectancy is required even in general purpose electronic equipment or apparatus, please contact your nearest Sanken sales representative to discuss, prior to the use of the products herein. The use of Sanken products without the written consent of Sanken in the applications where extremely high reliability is required (aerospace equipment, nuclear power control systems, life support systems, etc.) is strictly prohibited. • In the case that you use our semiconductor devices or design your products by using our semiconductor devices, the reliability largely depends on the degree of derating to be made to the rated values. Derating may be interpreted as a case that an operation range is set by derating the load from each rated value or surge voltage or noise is considered for derating in order to assure or improve the reliability. In general, derating factors include electric stresses such as electric voltage, electric current, electric power etc., environmental stresses such as ambient temperature, humidity etc. and thermal stress caused due to self-heating of semiconductor devices. For these stresses, instantaneous values, maximum values and minimum values must be taken into consideration. In addition, it should be noted that since power devices or IC’s including power devices have large self-heating value, the degree of derating of junction temperature (Tj) affects the reliability significantly. • When using the products specified herein by either (i) combining other products or materials therewith or (ii) physically, chemically or otherwise processing or treating the products, please duly consider all possible risks that may result from all such uses in advance and proceed therewith at your own responsibility. • Anti radioactive ray design is not considered for the products listed herein. • Sanken assumes no responsibility for any troubles, such as dropping products caused during transportation out of Sanken’s distribution network. • The contents in this document must not be transcribed or copied without Sanken’s written consent. LC5540LD-DS SANKEN ELECTRIC CO., LTD. 11