EV4050A-S-00A Universal Input, 40V/115mA Off-line Non-isolated LED Driver Evaluation Board The Future of Analog IC Technology DESCRIPTION FEATURES The MP4050A is a constant current LED driver with an integrated 500V MOSFET. It is designed specifically for energy efficient and low-cost LED bulb replacement applications. The EV4050A-S-00A Evaluation Board is designed to demonstrate the capabilities of MP4050A as an off-line, non-isolated LED driver which can load 40V/115mA LEDs in universal input voltage (85VAC to 265VAC, 50Hz/60Hz). The EV4050A-S-00A has an excellent efficiency and meets IEC61000-4-5 surge immunity and EN55015 conducted EMI requirements. It has various protections, like integrated thermal current foldback, VCC under-voltage lockout (UVLO), open LED protection (OLP), short-circuit protection (SCP), and over-temperature protection (OTP). All of there features make MP4050A an ideal solution for simple, off-line and non-isolated LED applications. ELECTRICAL SPECIFICATION Parameter Input Voltage Output Voltage Output Current Efficiency Symbol Value Units VIN VOUT IOUT η 85 to 265 40 115 >85 VAC V mA % Constant Current LED Driver Integrated 500V/8Ω MOSFET Low VCC Operating Current Maximum Frequency Limit Audible Noise Restrain Internal High-Voltage Current Source Internal 200ns Leading Edge Blanking Integrated Thermal Current Foldback Thermal Shutdown (Auto Restart with Hysteresis) VCC Under Voltage Lockout with Hysteresis Open LED Protection Short Circuit Protection Auto-Restart Function APPLICATIONS AC/DC or DC/DC LED driver application General Illumination Industrial Lighting Automotive/Decorative LED Lighting All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. Warning: Although this board is designed to satisfy safety requirements, the engineering prototype has not been agency approved. Therefore, all testing should be performed using an isolation transformer to provide the AC input to the prototype board. EV4050A-S-00A Rev.1.0 www.MonolithicPower.com 4/28/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 1 EV4050A-S-00A – OFF LINE, NON-ISOLATED LED DRIVER EV4050A-S-00A EVALUATION BOARD TOP VIEW BOTTOM VIEW (L x W x H) 29mm x 19mm x 18mm Board Number MPS IC Number EV4050A-S-00A MP4050AGS EVALUATION BOARD SCHEMATIC C5 51pF/50V U1 L L1 1mH/0.1A FR1 8 7 R5 10/1W 6 10k/0805 5 BD1 MB6S/600V/0.5A C2 4.7uF/400V C3 4.7uF/400V NC VCC DRAIN PRO NC GND NC SOURCE 1 C1 2.2uF/10V R2 R1 15.4k/1% 2 3 R3 4 3.3/1%/1206 MP4050AGS R4 3.3/1%/1206 330k/1%/1206 L2 40V/0.115A 4.7mH/0.24A LED+ C4 47uF/50V R6 200k D1 WUGC10JH/600V/1A LED- N Figure 1—Schematic EV4050A-S-00A Rev.1.0 www.MonolithicPower.com 4/28/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 2 EV4050A-S-00A – OFF LINE, NON-ISOLATED LED DRIVER PCB LAYOUT (SINGLE-SIDED) Figure 2—Top Layer Figure 3—Bottom Layer EV4050A-S-00A Rev.1.0 www.MonolithicPower.com 4/28/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 3 EV4050A-S-00A – OFF LINE, NON-ISOLATED LED DRIVER CIRCUIT DESCRIPTION The EV4050A-S-00A is configured to deliver a constant 115mA current at an output voltage of 40VDC. The EVB is designed for driving LEDs with a constant current (CC) in high-side buck topology. The simplicity and low component count of EV4050A-S-00A make the demo board ideal for space constrained and cost sensitive application such as GU10 size lamps. FR1 and BD1 compose the input stage. FR1 is used to protect for the component failure or some excessive short events, also it can restrain the inrush current. C2 L1 and C3 compose π filter to guarantee the conducted EMI meet standard EN55015. C2 and C3 are also used for energy storage reducing line noise and protecting against line surge. R5 is an optional parallel resistor on the board across L1 which damps the resonance of the π filter. C1 is the VCC supply capacitor which should be located near as IC and such as several µF is enough. R3, R4 are the sense resistor with 1% tolerance for good output current precision. It’s also recommended to use ±400PPM/C temperature coefficient type for better output current regulation in high temperature and low temperature. C5 is decoupling cap to decouple the voltage noise spike in high side buck solution. Around 30pF is suggested to use for stable operation. D1 is the freewheeling diode with ultrafast type. The recovery time of <75ns should be used which slow diodes cause excessive leading edge current spike during star-up and affect the efficiency. Ultrafast (trr<75ns) diode such as WUGC10JH or EGC10GH are recommended. R1 and R2 are the divided resistors which detect the output voltage for fault protection. It’s suggested to use the 1% tolerance. The upper divided resistor R2 is recommended to have a minimum size of SMD 1206 package. The PRO pin time constant should be less than 1µs which is related with R1 and R2 value. L2 is the power inductor which could use the low cost drum core. However, drum core have the open magnetic path which can be shored by a metal enclosure which reduces the effective inductance and requires the value to be adjusted to take this into account when placed inside the final enclosure. C4 is the output filter capacitor which is to smooth the inductor current and limit the output current ripple and ensure high frequency current flow within as small as a loop area as possible to reduce EMI. 105C or above rated capacitor should be choose in small size application for long life. The dummy load R6 is used to regulator the output voltage within the designed value in open lamp protection. EV4050A-S-00A Rev.1.0 www.MonolithicPower.com 4/28/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 4 EV4050A-S-00A – OFF LINE, NON-ISOLATED LED DRIVER EV4050A-S-00A BILL OF MATERIALS Qty Ref Value Description Package Manufacturer 1 C1 2.2µF Ceramic Capacitor, 10V, X7R 0603 muRata 4.7µF Capacitor;400V;20% DIP Beryl 47µF Capacitor;50V;20% Ceramic Capacitor, 50V, C0G DIP Jianghai 0603 TDK 1 C2, C3 C4 1 C5 51pF 1 BD1 MB6S Diode;600V;0.5A SOIC-4 1 1 1 1 1 1 WUGC10JH 10Ω 1mH 4.7mH 15.4kΩ 330kΩ Diode;600V;1A Resistor;5%;1W Inductor;100mA Inductor;240mA Film Resistor;1% Film Resistor;1% 3.3Ω 1 1 D1 FR1 L1 L2 R1 R2 R3, R4 R5 R6 10kΩ 200kΩ 1 U1 MP4050AGS 2 2 Manufacturer_P/N GRM188R71A225KE15D 4.7µF/400V CD263-50V47 C1608C0G1H510JT SMA DIP DIP DIP 0603 1206 Taiwan Semicondutor Diodes Yageo Bangdayuan Wurth Yageo Yageo WUGC10JH FKN1WSJT-52-10R CKL0510-102 7447724472 RC0603FR-0715K4L RC1206FR-07330KL Film Resistor;1% 1206 Yageo RC1206FR-073R3L Film Resistor;5% Film Resistor;5% Constant Current LED Driver 0805 0603 Yageo Yageo RC0805JR-0710KL RC0603JR-07200KL SOIC-8 MPS MB6S MP4050AGS-Z EV4050A-S-00A Rev.1.0 www.MonolithicPower.com 4/28/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 5 EV4050A-S-00A – OFF LINE, NON-ISOLATED LED DRIVER EVB TEST RESULTS Performance Data TA=+25°C, unless otherwise noted. Surge Test Line to Line 1kV surge testing is completed according to IEC61000-4-5. Input voltage is 220VAC/50Hz and operation is verified as following each surge event. Surge Level (V) Input Voltage (VAC) Injection Location Injection Phase (°) Test Result (Pass/Fail) 1000 -1000 1000 -1000 1000 -1000 1000 -1000 220 220 220 220 220 220 220 220 L to N L to N L to N L to N L to N L to N L to N L to N 0 0 90 90 180 180 270 270 Pass Pass Pass Pass Pass Pass Pass Pass EV4050A-S-00A Rev.1.0 www.MonolithicPower.com 4/28/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 6 EV4050A-S-00A – OFF LINE, NON-ISOLATED LED DRIVER Conducted EMI Test EV4050A-S-00A comply the EN55015 requirement. EV4050A-S-00A Rev.1.0 www.MonolithicPower.com 4/28/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 7 EV4050A-S-00A – OFF LINE, NON-ISOLATED LED DRIVER EVB Test Results Performance waveforms are tested on the evaluation board. VIN=115VAC/60Hz, VOUT=40V, ILED=115mA, TA=25°C, unless otherwise noted. Steady State Output Current Ripple Soft Start VDS 100V/div. VBUS 100V/div. IL 100mA/div. IL 100mA/div. IOUT 10mA/div. Turn On Delay Shutdown Short Circuit Protection VBUS 100V/div. VBUS 100V/div. VSOURCE 50V/div. IOUT 50mA/div. IOUT 50mA/div. IL 100mA/div. Short Circuit Protection Entry & Recovery VOUT 10V/div. IL 100mA/div. Open LED Protection Entry Open LED Protection Recovery VOUT 20V/div. VOUT 20V/div. IL 100mA/div. IL 100mA/div. EV4050A-S-00A Rev.1.0 www.MonolithicPower.com 4/28/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 8 EV4050A-S-00A – OFF LINE, NON-ISOLATED LED DRIVER EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. VIN=230VAC/50Hz, VOUT=40V, ILED=115mA, TA=25°C, unless otherwise noted. Steady State Output Current Ripple Soft Start VDS 100V/div. VBUS 100V/div. IL 100mA/div. IL 100mA/div. Turn On Delay Shutdown VBUS 100V/div. VBUS 100V/div. IOUT 50mA/div. IOUT 50mA/div. Short Circuit Protection Entry & Recovery Short Circuit Protection VSOURCE 100V/div. IL 50mA/div. Open LED Protection Entry Open LED Protection Recovery VOUT 20V/div. VOUT 20V/div. IL 100mA/div. IL 100mA/div. VOUT 10V/div. IL 100mA/div. EV4050A-S-00A Rev.1.0 www.MonolithicPower.com 4/28/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 9 EV4050A-S-00A – OFF LINE, NON-ISOLATED LED DRIVER QUICK START GUIDE 1. Preset Power Supply to 85VAC VIN 265VAC. 2. Turn Power Supply off. 3. Connect the Line and Neutral terminals of the power supply output to L and N port. For threewire input application, make LED- connected to Earth. 4. Connect Load to: a. Positive (+): LED+ b. Negative (–): LED5. Turn Power Supply on after making connections. NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. EV4050A-S-00A Rev.1.0 www.MonolithicPower.com 4/28/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 10