NCP370GEVB

NCP370GEVB NCP370 Over Voltage Protection Controller with Reverse Charge Control Evaluation Board User's Manual http://onsemi.com EVAL BOARD USER’S MANUAL Description The NCP370 is an overvoltage, overcurrent and reverse control device. Two main modes are available by setting logic pins. First mode is Direct Mode from Wall Adapter to the system. In this mode the system is both positive and negative overvoltage protected up to +28 V and down to −28 V. The wall adapter is disconnected from the system if the input voltage exceeds the overvoltage (OVLO) or undervoltage (UVLO) thresholds. At powerup, the Vout turns on 30 ms after the Vin exceeds the undervoltage threshold. The second mode, called the Reverse Mode, allows an external accessory to be powered by the system battery or a boost converter. Here, the external accessory would be connected to the device input (bottom connector of system) and the device battery would be at the device output. In this case, overcurrent protection is activated to prevent accessory faults and battery discharge. Thanks to the NCP370 using an internal NMOS, the system cost and the PCB area of the application board are minimized. The NCP370 provides a negative going flag (FLAG(BAR)) output which alerts the system that a fault has occurred. In addition, the device has ESD protected input (15 kV Air) when bypassed with a 1.0 mF or larger capacitor. Figure 1. NCP370GEVB Board Picture © Semiconductor Components Industries, LLC, 2011 August, 2011 − Rev. 3 1 Publication Order Number: EVBUM2015/D NCP370GEVB Figure 2. NCP370GEVB Board Schematic http://onsemi.com 2 NCP370GEVB Table 1. BILL OF MATERIALS Quantity Designation Manufacturer 1 NCP370 LLGA3x3 ON Semiconductor 2 C1 (Cin), C2 (Cout) Murata – GRM188R61E105KA12D 1 C3 (ID): not mounted 13 Test points:IN1, OUT1, BATTERY, FLAG, DRAIN, REV, DIR 1 J13 (USB IN) 1 Digi key Specifications Over voltage protection 490-3897-1-ND 1 mF 25V X5R CMS0805 5001K-ND Hole diameter: 1.3mm Molex WM17116CT-ND 5 pins USB miniB J12. (USB OUT) Molex WM17118-ND 4 pins USB A 1 FLAG rohm 511-1287-ND Green LED 0805 1 R6 susumu Rr08p(value)dct-nd 1 kW. CMS0603 0.5% 2 R3, R4 susumu Rr08p(value)dct-nd 100 kW. CMS0603 0.5% Not mounted R5,R7,R8,R9 (USB data) 1 R1 susumu Rr08p(value)bct-nd 69.8k W. CMS0603 0.5% 1 R2 susumu Rr08p(value)bct-nd 16.9k W. CMS0603 0.5% 4 GND jumper: J7, J10 WM8083-ND Jumper Ground 1mm pitch 10.16 mm 1x3 REV WM8083-ND SMB R 114 665 PCB Plated Gold 1x3 DIR WM8083-ND SMB R 114 665 PCB Plated Gold 1x2 Imax WM8083-ND SMB R 114 665 PCB Plated Gold 1x2 I2 WM8083-ND SMB R 114 665 PCB Plated Gold 1x2 Battery WM8083-ND SMB R 114 665 PCB Plated Gold http://onsemi.com 3 NCP370GEVB PCB Figure 3. NCP370GEVB Board Layout (Top View) Figure 4. NCP370GEVB Board Layout (Bottom View) http://onsemi.com 4 NCP370GEVB CONNECTING PROCESS 1. Place /REV strap and /DIR strap on left side (“1” logic) (connected to Vbat, through pull up resistor) 2. Let Battery strap opened. 3. Connect a Battery or power supply (4.2 V) on Battery test point (min 2 A capability). http://onsemi.com 5 NCP370GEVB 4. Connect strap on lim. ILIM PIN (7) SW2 (2) SW1 (IMAX) R1 = 70k R2 = 14k http://onsemi.com 6 NCP370GEVB 5. Select I limit threshold with pull down resistors connected on pin 7: SW1 SW2 IOCP 0 0 500 mA 0 1 1A 1 0 1.5 A 1 1 1.5 A R1 = 70K R2 = 14K Disable Mode: 6. Connect 10 V capability Vin Supply on IN1 test point. a.) Set power supply to 5 V ⇒ Check Vout = 0 V and LED = off http://onsemi.com 7 NCP370GEVB Direct Mode: 7. Switch /DIR from left to right, 1 logic level to 0 logic level 8. Check Vout = 5 V and Flag LED is still off 9. Set Vin = 7 V 10. Check Flag LED = on, and Vout is 0 V. 11. Switch /REV from left to right, 1 logic level to 0 logic level 12. Check Flag LED = off, and Vout = Vin = 7 V. Disconnect Vin Supply. http://onsemi.com 8 NCP370GEVB Reverse Mode: 13. Connect Set /DIR = 1, /REV = 1 Disconnect Vin Power Supply from IN test points. Connect accessory on IN1 or IN2 test points. Put strap to connect Battery to Vout 14. Set /DIR = 1, /REV = 0: Vout = Vin If I accessory < I limit then Vin = Vout − Rdson x I If I accessory > I limit then Vin = 0 (Current regulation) Power off. 15. Set /DIR = 1, /REV = 1 16. Disconnect accessory 17. Disconnect Battery http://onsemi.com 9 onsemi, , and other names, marks, and brands are registered and/or common law trademarks of Semiconductor Components Industries, LLC dba “onsemi” or its affiliates and/or subsidiaries in the United States and/or other countries. onsemi owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of onsemi’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. onsemi is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. The evaluation board/kit (research and development board/kit) (hereinafter the “board”) is not a finished product and is not available for sale to consumers. The board is only intended for research, development, demonstration and evaluation purposes and will only be used in laboratory/development areas by persons with an engineering/technical training and familiar with the risks associated with handling electrical/mechanical components, systems and subsystems. This person assumes full responsibility/liability for proper and safe handling. Any other use, resale or redistribution for any other purpose is strictly prohibited. THE BOARD IS PROVIDED BY ONSEMI TO YOU “AS IS” AND WITHOUT ANY REPRESENTATIONS OR WARRANTIES WHATSOEVER. WITHOUT LIMITING THE FOREGOING, ONSEMI (AND ITS LICENSORS/SUPPLIERS) HEREBY DISCLAIMS ANY AND ALL REPRESENTATIONS AND WARRANTIES IN RELATION TO THE BOARD, ANY MODIFICATIONS, OR THIS AGREEMENT, WHETHER EXPRESS, IMPLIED, STATUTORY OR OTHERWISE, INCLUDING WITHOUT LIMITATION ANY AND ALL REPRESENTATIONS AND WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, NON−INFRINGEMENT, AND THOSE ARISING FROM A COURSE OF DEALING, TRADE USAGE, TRADE CUSTOM OR TRADE PRACTICE. onsemi reserves the right to make changes without further notice to any board. You are responsible for determining whether the board will be suitable for your intended use or application or will achieve your intended results. Prior to using or distributing any systems that have been evaluated, designed or tested using the board, you agree to test and validate your design to confirm the functionality for your application. Any technical, applications or design information or advice, quality characterization, reliability data or other services provided by onsemi shall not constitute any representation or warranty by onsemi, and no additional obligations or liabilities shall arise from onsemi having provided such information or services. onsemi products including the boards are not designed, intended, or authorized for use in life support systems, or any FDA Class 3 medical devices or medical devices with a similar or equivalent classification in a foreign jurisdiction, or any devices intended for implantation in the human body. You agree to indemnify, defend and hold harmless onsemi, its directors, officers, employees, representatives, agents, subsidiaries, affiliates, distributors, and assigns, against any and all liabilities, losses, costs, damages, judgments, and expenses, arising out of any claim, demand, investigation, lawsuit, regulatory action or cause of action arising out of or associated with any unauthorized use, even if such claim alleges that onsemi was negligent regarding the design or manufacture of any products and/or the board. This evaluation board/kit does not fall within the scope of the European Union directives regarding electromagnetic compatibility, restricted substances (RoHS), recycling (WEEE), FCC, CE or UL, and may not meet the technical requirements of these or other related directives. FCC WARNING – This evaluation board/kit is intended for use for engineering development, demonstration, or evaluation purposes only and is not considered by onsemi to be a finished end product fit for general consumer use. It may generate, use, or radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC rules, which are designed to provide reasonable protection against radio frequency interference. Operation of this equipment may cause interference with radio communications, in which case the user shall be responsible, at its expense, to take whatever measures may be required to correct this interference. onsemi does not convey any license under its patent rights nor the rights of others. LIMITATIONS OF LIABILITY: onsemi shall not be liable for any special, consequential, incidental, indirect or punitive damages, including, but not limited to the costs of requalification, delay, loss of profits or goodwill, arising out of or in connection with the board, even if onsemi is advised of the possibility of such damages. In no event shall onsemi’s aggregate liability from any obligation arising out of or in connection with the board, under any theory of liability, exceed the purchase price paid for the board, if any. The board is provided to you subject to the license and other terms per onsemi’s standard terms and conditions of sale. For more information and documentation, please visit www.onsemi.com. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Email Requests to: orderlit@onsemi.com onsemi Website: www.onsemi.com ◊ TECHNICAL SUPPORT North American Technical Support: Voice Mail: 1 800−282−9855 Toll Free USA/Canada Phone: 011 421 33 790 2910 www.onsemi.com 1 Europe, Middle East and Africa Technical Support: Phone: 00421 33 790 2910 For additional information, please contact your local Sales Representative