NCV890203 Evaluation Board User`s Manual
Contents
1. DELAY VDELU VDELTH entente denne RSTB tRESU time Figure 6 Typical Operation of the Reset with Delay Function http onsemi com 6 Efficiency NCV890203GEVB TYPICAL PERFORMANCE NCV890203 Efficiency 3 3 V Efficiency VIN 6 0 V VIN 13 2V VIN 28 0 V T 15 Output Current A Figure 7 Efficiency with a 3 3 V Output NCV890203 Efficiency 5 0 V gt o e E o e ul VIN 6 0V VIN 13 2 V VIN 28 0 V 1 5 Output Current A Figure 8 Efficiency with a 5 0 V Output http onsemi com 7 Line Regulation a LE 2 o gt q O ES 2 E 3 o o tc o a Line Regulation of VOUT NCV890203GEVB NCV890203 Line Regulation 3 3 V A 9 IOUT 100 mA IOUT 1 0 A E IOUT 500 mA c IOUT 2 0A 10 00 15 00 20 00 25 00 30 00 Input Voltage V Figure 9 Line Regulation for a 3 3 V Output NCV890203 Line Regulation 5 0 V SS 19 IOUT 100 mA IOUT 500mA IOUT 1 0A gt IOUT 2 0A 10 00 15 00 20 00 25 00 30 00 Input Voltage V Figure 10 Line Regulation for a 5 0 V Output http onsemi com 8 NCV890203GEVB Load Regulation NCV890203 Load Regulation 3 3 V VIN 6 0V VIN 132. GRM188R71H472KA01D 3128 2 00 15 00 00 08 0 108 0740 001 Yes http onsemi com 12 NCV890203GEVB Table 4 BILL OF MATERIALS continued Substi Reference Manufacturer s tution Designator s A Description Tolerance Part Number Allowed GND3 GND6 TERM N A TURRET Mill Max 2501 2 00 44 00 00 07 0 SOLDER Manufacturing TURRET 219 Corp 109 L EN RSTB PIN INBOARD Vector Electronics K24C M 042 HOLE 1000 PKG NCV890203 2 0 A 2 MHz NCV890203 10PINDFNP5 ON Semiconductor NCV890203MWTXG Automotive Buck Switching Regulator L2 is a placeholder footprint for an optional input inductor filter component Boards are shipped with a shorting jumper installed to complete the input path NOTE All devices are ROHS Compliant ON Semiconductor and are registered trademarks of Semiconductor Components Industries LLC SCILLC SCILLC owns the rights to a number of patents trademarks copyrights trade secrets and other intellectual property A listing of SCILLC s product patent coverage may be accessed at www onsemi com site pdf Patent Marking pdf SCILLC reserves the right to make changes without further notice to any products herein SCILLC makes no warranty representation or guarantee regarding the suitability of its products for any particular purpose nor does SCILLC assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability including withou
3. Withstands Load Dump to 40 V 2 MHz Free running Switching Frequency Reset with Adjustable Delay Logic level Enable Input Can be Directly Tied to Battery e 2 0 A min Cycle by Cycle Peak Current Limit Short Circuit Protection enhanced by Frequency Foldback 1 75 Output Voltage Tolerance Output Voltage Adjustable Down to 0 8 V 1 4 Millisecond Internal Soft Start Thermal Shutdown TSD Low Shutdown Current NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements AEC Q100 Qualified and PPAP Capable e Wettable Flanks DEN Pin Edge Plating e These Devices are Pb Free and are ROHS Compliant Typical Applications e Audio Infotainment Safety Vision Systems Instrumentation Publication Order Number EVBUM2234 D NCV890203GEVB Enable Figure 2 NCV890203 Block Diagram TYPICAL APPLICATION Figure 3 NCV890203 Typical Application http onsemi com 2 NCV890203GEVB Table 1 EVALUATION BOARD TERMINALS Positive dc Input Voltage VOUT Positive dc Output Voltage RSTB Reset with Adjustable Delay Table 2 ABSOLUTE MAXIMUM RATINGS Voltages are with respect to GND tng H a Stresses exceeding those listed in the Maximum Ratings table may damage the device If any of these limits are exceeded device functionality should not be assumed damage may occur and reliability may be affected Table 3 ELECTRICAL CHARACTERSITICS REGULATION Output Voltage VO
4. uF 75 V 0 2 A 40 V 4 0 A 4 7 uH 6 98 kQ CAP CER 330 pF 50 V COG 0603 CAP CER 0 47 uF 25 V 10 X7R 0603 CAP CER 4 7 uF 50 V 10 X7R 1210 CAP CER 10 uF 10 V 10 X7R 1206 CAP CER 1 0 uF 50 V X5R 0805 DIODE SWITCH 200 mA 75 V SOD323 DIODE SCHOTTKY 4 0 A 40 V SMB INDUCTOR POWER 4 7 uH 4 5 A 20 SMD RES 0 0 Q 1 4 W JUMP 1206 SMD RES 6 98 kQ 1 10 W 1 0603 SMD RES 100 Q 1 10 W 1 0603 SMD RES 31 6 Q 1 10 W 1 0603 SMD RES 10 0 kQ 110 W 1 0603 SM CAP CER 4700 PF 50 V 10 X7R 0603 e CIRCUIT PIN PRNTD 020 D 425 L 4 CONN JACK N A BANANA UNINS PANEL MOU Tolerance E 6 lt gt N A TPA S ES N A BANANA Murata Electronics North America 03 5 Murata Electronics North America Murata Electronics North America 1210 1206 Taiyo Yuden Murata Electronics North America SOD_323 SMB_DIODE ON Semiconductor ON Semiconductor 4 5A XAL4030 472 Coilcraft 03 3 3 North America Murata Electronics 6 1206 Mill Max Manufacturing Corp Emerson Network Power Connectivity Soultions Substi tution Allowed Manufacturer s Part Number C0603C104K8RACTU GCM1885C1H331JA16D GCM188R71E474KA64D GRM32ER71H475KA88L LMK316AB7106KLHT UMK212BJ105KG T BAS16HT1G o NRVB440MFST1G XAL4030 472ME o z z z zx EEN i RC1206JR 070RL CRCWO6036K98FKEA CRCW0603100RFKEA CRCW060331R6FKEA CRCW060310KOFKEA
5. 2 V VIN 28 0 V E 2 o gt o ES lt 2 3 o o tc o c o ml 1 5 Output Current A Figure 11 Load Regulation with a 3 3 V Output NCV890203 Load Regulation 5 0 V VIN 6 0V VIN 213 2V VIN 28 0 V Load Regulation of VOUT 15 Output Current A Figure 12 Load Regulation with a 5 0 V Output http onsemi com 9 NCV890203GEVB SCHEMATIC QNO EI ONO ONO 9031 Nado ZNINE LNOA O 9031 N3dO NINE A0L HZX 9061 anoL e1noo LINO AOS 909 090 3906 diNODO gen i ano x dWoou T 090 duly anoo O Ona 916 iaz dWOS 9 SN eds LJano SJINO9EHSIN OLISINOPPIAHN ua HZX AOS uLX A0S S080 OLcl Figure 13 Schematic 02068A0N MS NIA HZX AOL 090 Ano Adao onsemi com http 10 NCV890203GEVB PCB LAYOUT NCV890203 Demo Board Rev 1 04 15 14 TOP Layer Figure 14 Top View NCV890203 Demo Board Rev 1 04 15 14 BOTTOM Layer mirrored Figure 15 Bottom View http onsemi com 1 NCV890203GEVB BILL OF MATERIALS Table 4 BILL OF MATERIALS Reference Designator s CBST CDRV CCOMP CDLY CFLT1 CFLT2 CVIN1 BST COMP DLY FB RDEP RMOD sw GND1 GND2 VIN VOUT Qty Description CAP 10 uF 10 V 0 1 uF CERAMIC X7R 0603 330 pF 0 47 uF 4 7 uF 10 uF 1 0
6. NCV890203GEVB NCV890203 Evaluation Board User s Manual Description The NCV890203 is a fixed frequency monolithic Buck switching regulator intended for Automotive battery connected applications that must operate with up to a 36 V input supply The regulator is suitable for systems with low noise and small form factor requirements often encountered in automotive driver information systems The NCV890203 is capable of converting the typical 4 5 V to 18 V automotive input voltage range to outputs as low as 3 3 V at a constant switching frequency above the sensitive AM band eliminating the need for costly filters and EMI countermeasures A Reset pin signals when the output is in regulation and a pin is provided to adjust the delay before the RSTB signal goes high The NCV890203 also provides several protection features expected in Automotive power supply systems such as current limit short circuit protection and thermal shutdown In addition the high switching frequency produces low output voltage ripple even when using small inductor values and an all ceramic output filter capacitor forming a space efficient switching regulator solution Figure 1 NCV890203 Evaluation Board Semiconductor Components Industries LLC 2014 April 2014 Rev 0 ON Semiconductor hitp onsemi com EVAL BOARD USER S MANUAL Key Features Internal N channel Power Switch Low Vin Operation Down to 4 5 V High Vin Operation to 36 V
7. RING INFORMATION LITERATURE FULFILLMENT N American Technical Support 800 282 9855 Toll Free ON Semiconductor Website www onsemi com Literature Distribution Center for ON Semiconductor USA Canada P O Box 5163 Denver Colorado 80217 USA Europe Middle East and Africa Technical Support Order Literature http www onsemi com orderlit Phone 303 675 2175 or 800 344 3860 Toll Free USA Canada Phone 421 33 790 2910 chases Fax 303 675 2176 or 800 344 3867 Toll Free USA Canada Japan Customer Focus Center For additional information please contact your local Email orderlit onsemi com Phone 81 3 5817 1050 Sales Representative EVBUM2234 D
8. UT Line Regulation VOUT Load Regulation VOUT SWITCHING Switching Frequency Soft start Time CURRENT LIMIT Peak Current Limit VOUT EN 5V 3 25 A PROTECTIONS E Es Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions unless otherwise noted Product performance may not be indicated by the Electrical Characteristics if operated under different conditions http onsemi com 3 NCV890203GEVB AOS 909 090 AUUE E diNODO 090 wel NOS ANODE 090 duly 9 LE LgJz anoo O no g ano H cad edd 090 aNd QOL lady AOL HZX AOL HZX SJINOSEHBIN 9021 9021 9031 9021 OLISJINOrPEAHN N3dO Nado a4noL 4n0L Mada ZNIWY LNIINH ZLNOO LLNOO no O 3lNz4v 0 0v TVX 161997 MS HZX AOL 090 jnro Adao HZX AOS gt uZX A08 ano CNS Figure 4 NCV890203GEVB Evaluation Board Schematic onsemi com http NCV890203GEVB OPERATIONAL GUIDELINES 1 Connect a de input voltage within the 6 0 V to 36 V range between VIN and GND 2 Connect a dc enable voltage within the 2 0 V to 36 V range between EN and GND This will power up the switcher The VOUT signal should be 3 3 V 3 Add a load to VOUT up to 2 0 A Figure 5 NCV890203 Board Connections ADDITIONAL GUIDELINES Output Voltage Selection The voltage output for the switcher is adjustable and can be set with a resistor divider The FB refer
9. ence for the switcher is 0 8 V VOUT RUPPER FB 0 8 V RLOWER Use the following equation R R Vour Ves UPPER LOWER V FB Some common setups are listed below Output V VREF V kQ 1 kQ 1 1 8 0 8 2 5 0 8 3 3 0 8 5 0 0 8 Reset with Adjustable Delay The RSTB pin is pulled low as long as the voltage on the FB pin is lower than 92 typical of the reference voltage which corresponds to the output voltage being lower than 92 of its regulation level It is high impedance when the voltage goes above 94 typical of the regulation level after a delay adjusted by the capacitor on the DELAY pin The capacitor is held at ground until the output enters regulation Cpgr Ay is then quickly charged to the internal rail voltage Vresu then discharged by the Idelay current until its voltage reaches the lower threshold Vpe TH Only at this moment the RSTB pin voltage goes high indicating the end of the Reset condition http onsemi com NCV890203GEVB A small filtering delay of duration tpg ensures that the The RSTB pin is also pulled low in case of UVLO Vin RSTB signal doesn t toggle from high to low in case of high below the UVLO threshold TSD temperature shutdown frequency noise when the output is in regulation or Disable Ven below the enable threshold events A pull up resistor is needed on the RSTB pin as it features an open collector output capable of sinking 1 mA minimum at 400 mV
10. t limitation special consequential or incidental damages Typical parameters which may be provided in SCILLC data sheets and or specifications can and do vary in different applications and actual performance may vary over time All operating parameters including Typicals must be validated for each customer application by customer s technical experts SCILLC does not convey any license under its patent rights nor the rights of others SCILLC products are not designed intended or authorized for use as components in systems intended for surgical implant into the body or other applications intended to support or sustain life or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application Buyer shall indemnify and hold SCILLC and its officers employees subsidiaries affiliates and distributors harmless against all claims costs damages and expenses and reasonable attorney fees arising out of directly or indirectly any claim of personal injury or death associated with such unintended or unauthorized use even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part SCILLC is an Equal Opportunity Affirmative Action Employer This literature is subject to all applicable copyright laws and is not for resale in any manner PUBLICATION ORDE
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