NCV8871BSTGEVB

NCV8871BSTGEVB NCV8871 Automotive Grade Boost Controller Audio Amplifier Evaluation Board User's Manual www.onsemi.com EVAL BOARD USER’S MANUAL Description Key Features The NCV8871BST evaluation board provides an opportunity to evaluate the NCV887100 in an audio amplifier power supply type application. The board supplies an 18 V output with 9 A of output current from as low as a 6 V input. The enable pin can also be used to synchronize the supply to an external clock. • • • • • • • 18 V Output Voltage 9 A Output Current Fixed Frequency Operation at 170 kHz Regulates Fully Loaded From as Low as 6 V Input Survives 40 V Load Dump External Clock Synchronization up to 340 kHz Automotive Grade Figure 1. NCV8871BSTGEVB Evaluation Board © Semiconductor Components Industries, LLC, 2016 May, 2019 − Rev. 2 1 Publication Order Number: EVBUM2066/D NCV8871BSTGEVB Table 1. EVALUATION BOARD TERMINAL DESCRIPTIONS Terminal Function VIN Positive dc input voltage. GND Common dc return. VOUT Dc output voltage. EN/SYNC Dc enable voltage and external clock synchronization. A dc logic low disables the device. Table 2. ABSOLUTE MAXIMUM RATINGS (Voltages are with respect to GND) Rating Value Unit Dc Supply Voltage (VIN) -0.3 to 40 V Dc Supply Voltage (EN/SYNC) -0.3 to 6 V Ambient Temperature -40 to 85 °C 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 CHARACTERISTICS (TA = 25°C, 4.5 ≤ VIN ≤ 18 V, IOUT ≤ 2 A, unless otherwise specified) Characteristic Conditions Typical Value Unit 18.00 V OUTPUT VOLTAGE Output Voltage Voltage Accuracy −40 ≤ TA ≤ 85 4 % 7.4 ms 170 kHz SYNC Frequency 170 to 340 kHz Duty Cycle Range 2 to 88 % 50 A VIN increasing 3.8 V VIN = 13.2 V, IOUT = 5 A 85 % 170 °C Soft-start Time SWITCHING REGULATOR Switching Frequency Current Limit Cycle-by-cycle current limit General Input Undervoltage Lockout (UVLO) Efficiency Thermal Shutdown www.onsemi.com 2 NCV8871BSTGEVB TYPICAL WAVEFORMS Figure 2. Normal Operation Figure 3. Gate Drive Falling Edge Figure 4. Gate Drive Rising Edge Figure 5. Synchronization Figure 6. Soft Start with Load www.onsemi.com 3 GND VIN VIN C15 100nF + C2 680uF VIN + GND C3 680uF www.onsemi.com 4 GND C14 330pF VIN GND VFB GND 7 6 R4 1K VFB 8 VC VIN_IC VFB VC VIN 14K R3 8871 EN/SYNC ISNS GND VDRV SER2915H-682KL U1 VDRV 5 VDRV GDRV C4 10000pF R2 10K VC 1uF C1 L1 6.8uH C12 1uF 1 2 3 4 VSW + C5 680uF + C6 680uF EN/SYNC EN/SYNC ISNS R11 0 GDRVR10 0 + C7 680uF GDRV + C8 680uF + C10 680uF VOUT R1 8 mohm ISNS C13 1uF C11 1uF VOUT D1 MBRB2545CTT4G Q2 NTD5802N + C9 680uF Q1 NTD5802N 1 D2 MBR140SFT1G MNT2 CON1 1 C16 100nF MNT3 CON1 1 Place cap close to VIN pin VIN_IC MNT4 CON1 1 MNT1 CON1 VOUT GND VOUT D3 MBR140SFT1G VIN_IC NCV8871BSTGEVB SCHEMATIC Figure 7. NCV8871BSTGEVB Evaluation Board Schematic NCV8871BSTGEVB PCB Layout Figure 8. Top Layout Figure 9. Bottom Layout www.onsemi.com 5 NCV8871BSTGEVB Table 4. BILL OF MATERIALS Reference Designator(s) QTY SubstituManufacturer’s RoHS tion Part Number Allowed Compliant Description Value Tolerance Footprint Manufacturer C1 1 CAP CER 1UF 16V X7R 0603 1 uF 10% 603 Murata Electronics North America GRM188R71C1 05KA12D Yes Yes C2, C3 2 CAP ELECT 1000UF 50V FK SMD 1000 uF 20% FKV_CAP Panasonic ­ ECG EEE­FK1H102AM No Yes C4 1 CAP CER 33000PF 50V X7R 0603 33000 pF 10% 603 Murata Electronics North America GRM188R71H3 33KA61D No Yes C5 thru C10, C18 thru C20 9 CAP 180UF 50V ELECT FM RADIAL 180 uF 20% CAP_8P0 Murata Electronics North America EEU­FM1H181L No Yes C11, C12, C13 3 CAP CER 1UF 50V X7R 1206 1 uF 10% 1206 Murata Electronics North America GCM31MR71H 105KA55L Yes Yes C14 1 CAP CER 2700PF 100V 10% X7R 0603 2700 pF 10% 603 Murata Electronics North America GRM188R72A2 72KA01D No Yes C15, C16 2 CAP CER .1UF 50V 10% X7R 0805 100 nF 10% 805 Murata Electronics North America GRM21BR71H1 04KA01L Yes Yes C17 1 Do Not Populate Yes Yes D1 1 45V, 30A D2PAK Schottky Rectifier 45 V / 30 A N/A D2PAK_3 ON Semiconductor MBRB2545CTT4G No Yes D2, D3 2 DIODE SCHOTTKY 40V 1A SOD123FL 40 V / 1A N/A SOD_123 ON Semiconductor MBR140SFT1G No Yes J1 1 CONN HEADER 4POS R/A 1.5MM TIN N/A N/A 4PINCONN Coilcraft Inc 292206­4 No Yes L1 1 High Temp SMT Power Inductor 6.8uH 6.8 uH 30A SER2900 Coilcraft Inc SER2915H­682KL No Yes Q1, Q2 2 MOSFET N­CH 40V 101A DPAK 40 V / 101 A N/A DPAK3_DMD ON Semiconductor NTD5802NT4G No Yes R1 1 RES 0.008 OHM 3W 1% 3015 SMD 0.008 1% 3015 Susumu KRL7638­C­R0 08­F­T1 No Yes R2 1 RES 6.34K OHM 1/10W 1% 0603 SMD 6.34 K 1% 603 Vishay/Dale CRCW06036K3 4FKEA Yes Yes R3 1 RES 14.0K OHM 1/10W 1% 0603 SMD 14.0 K 1% 603 Vishay/Dale CRCW060314K 0FKEA Yes Yes R4 1 RES 1.00K OHM 1/10W 1% 0603 SMD 1.00 K 1% 603 Vishay/Dale CRCW06031K0 0FKEA Yes Yes R10, R11 2 RES 0.0 OHM 1/8W 0805 SMD 0 5% 805 Vishay/Dale CRCW0805000 0Z0EA Yes Yes TP1 thru 6, 7, 9, 14 thru 17, 20 13 PIN INBOARD .042" HOLE 1000/PKG N/A N/A TP Vector Electronics K24C/M Yes Yes TP10, 11, 12, 13 4 CONN JACK BANANA UNINS PANEL MOU N/A N/A BANANA Emerson Network Power Conn Solutions 108­0740­001 No Yes U1 1 Automotive Non­Sync Boost Controller N/A N/A SOIC8_N_ADJ ON Semiconductor NCV8871_00 No Yes U2 1 Automotive Non­Sync Boost Controller N/A N/A 10PINDFNP5 ON Semiconductor NCV8872_00 No Yes MNT1, 2, 3, 4 4 Hex Spacer 4­40 1/2" Zinc Plated Steel N/A N/A MOUN­ THOLE125 McMaster­Carr 93620A432 Yes Yes 4 Hex Nut 4­40 1/4" Zinc Plated Steel N/A N/A MOUN­ THOLE125 McMaster­Carr 90480A005 Yes Yes 603 www.onsemi.com 6 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. 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