NCP6361EVB NCP6361 WLCSP9 Evaluation Board User'sManual http://onsemi.com EVAL BOARD USER’S MANUAL Introduction This document gives a detailed description of the NCP6361 Evaluation Board (WLCSP9) with the Bill Of Material (BOM), board schematic and layout. The appropriate laboratory test setups are also provided. The NCP6361 Evaluation Board has been designed to help for a quick evaluation of the NCP6361 buck converter. This document has to be used together with the NCP6361 datasheet. The datasheet contains full technical details regarding the NCP6361 specifications and operation. The board (FR4 material) is implemented in 4 metal layers. The top and bottom layers have thicknesses of 35 mm (1 oz). The PCB thickness is 1.6 mm with dimensions of 77 mm by 55 mm (see Figure 1). Figure 1. Evaluation Board Picture EQUIPMENT Table 1. RECOMMENDED EXAMPLE OF EQUIPMENT Description Regulated Power Supply Example of Equipment (Note 1) Main Features 1.5 A DC Current capability Multimeter Qty. Tektronix PS2520G GW INSTEK PPT3615 1 Keitley 2000 or 2001 2 Sourcemeter 3 A DC Current capability Keitley 2420 2 Oscilloscope 500 MHz Bandwidth, four channel scope, min 1 Mbit memory per channel (Note 2) Tecktronix TDS744, 754 or 784 / TDS5054 series or Lecroy WR5060 TDS5104B, 1 GHz, 5 GS/s 1 Voltage probe 3 probes 500 MHz Bandwidth Tektronix P6139A / P5050 3 Current probe 1 probe Tektronix TCP 202 Waveform generator Arbitrary/Fonction generator Tektronix AFG 3102 Dual channel, 100 MHz 1 VCON 1 SMB Cable 1. Equipment used in the context of this Evaluation Board User’s Manual 2. Greater Scope memory per channel offers better resolution © Semiconductor Components Industries, LLC, 2013 August, 2013 − Rev. 0 1 Publication Order Number: EVBUM2210/D NCP6361EVB QUICK TEST PROCEDURE (see Figure 2) Initial Setup: ♦ The initial setup given here is recommended before starting measurements on the evaluation board. • Jumper Configuration: initial / default setup ♦ LTR1 not connected ♦ LTR2 connected − Can be used for visualizing the current in the inductor (ILX) using an oscilloscope current probe ♦ LTR3 connected − Connect FB pin to Vout ♦ ♦ S1: Enable pin; default with jumper connected to VBAT (Logic Level High), device is activated by default S2: ByPass Enable option, default with jumper connected to GND (Logic Level Low), By Pass not activated S3: Frequency Selection pin, default with jumper connected to GND (Logic level Low), FSEL = 0 ⇔ Frequency = 6 MHz selected Table 2. SWITCHING FREQUENCY SELECTION FSEL Buck Converter Switching Frequency (FSW) Inductor (LX) 0 6 MHz (24 MHz / 4) 0.47 mH 1 3.429 MHz (24 MHz / 7) 1 mH • Connect Vin (VBAT) with VBAT tuned at 3.7 V for • • • • • • • • • VCON can vary from 0.16 V to 1.4 V with a example Connect VCON with VCON tuned at 0.8 V for example ⇒ Vout = 0.8V x 2.5 = 2V Connect load (8 W or 10 W respectively 250 mA or 200 mA considering Vout = 2 V) or connect a current source tuned with 100 mA (as initial load value) Connect voltage probe or multi−meter on Vout test point Other test points can be eventually checked: VCON (TP9), FB, VBAT, EN, FSEL and BPEN SW test point is available as well Apply VBAT = 3.7 V first then VCON = 0.8 V and finally IOUT (100 mA) if current source connected Check Vout = 2 V VBAT can vary from 2.5 V to 5.5 V according to datasheet • corresponding respective Vout of 0.4 V typical and 3.5 V typical Output current can vary from 0 to 800 mA in PWM mode and up to 1.2 A in By Pass mode Operating Modes: • 4 operating modes are available: they can be checked by sweeping VCON according to datasheet specification and below rough guide lines: ♦ Sleep Mode with VCON below about 0.125 V ♦ PFM Mode with VCON above 0.125 V ♦ PWM Mode when Iout above about 200 mA ♦ By Pass Mode when Vout close to Vin such as Vin – Vout below about 200 mV or by forcing bypass mode with pin BPEN http://onsemi.com 2 NCP6361EVB BOARD DESCRIPTION Figure 2. Board Description http://onsemi.com 3 NCP6361EVB BOARD SCHEMATIC Figure 3. Board Schematic http://onsemi.com 4 NCP6361EVB Table 3. BILL OF MATERIAL − NCP6361 EVALUATION BOARD Designator Qty Description Value Tol Footprint C1 1 CAP CER 100UF 6.3V 20% X5R 1210 100 mF 20% 1210 Manufacturer Manufacturer Part Number Lead Free Yes C2 1 0805 DNP − 0805 C4, C8 2 CAP CER 10UF 16V 10% X5R 0603 10 mF 10% 0603 DNP Yes C5 1 CAP CER 1UF 16V X7R 10% 0603 1 mF 10% 0603 Yes C6 1 CAP CER 4.7UF 16V X7R 0603 4.7 mF 5% 0603 Yes C7 1 0402 DNP R1 1 STRAP DNP − R2 1 0603 SMD 50, DNP − 0603 R3 1 DNP Open − 0805 L1 1 2016, inductor 0.47 mH (1 mH) 0.47 mH (1 mH) TP1, TP5 2 VBAT, VOUT, Clip Test Point, Hole Diameter 1.6 mm (0.063 mil) − TP2, TP3, TP4 3 EN, BPEN, FSEL, Clip Test Point, Hole Diameter 1.6 mm (0.063 mil) − TP6 1 SW, Contact Test Point − TP7 1 FB, Clip Test Point, Hole Diameter 1.6 mm (0.063 mil) TP8 1 TP9 0402 Yes DNP Engineering, DNP Yes Yes DNP − TFM201610A−R47M−T00 Yes 2016 TDK TOKO DFE201612R−H−R47N TP_1.6MMHOL E_KEYSTONE _5010 Keystone 5010 Yes TP_1.6MMHOL E_KEYSTONE _5010 Keystone 5010 Yes − NA NA NA Yes − − TP_1.6MMHOL E_KEYSTONE _5010 Keystone 5010 Yes Load Transient Gen, Clip Test Point, Hole Diameter 1.6 mm (0.063 mil) − − TP_1.6MMHOL E_KEYSTONE _5010 Keystone 5010 Yes 1 VCON, Clip Test Point, Hole Diameter 1.6mm (0.063 mil) − − TP_1.6MMHOL E_KEYSTONE _5010 Keystone 5010 Yes J1,J2 2 VBAT, VOUT, 2−Pins Male Connector, 5.08 mm Step − − CON2 Phoenix Contact MSTBA2.52G5.08 Yes J3, J4 2 Ground Strap, Brass, Diameter 1.0 mm, Pitch 10.16 mm, Height 9.9 mm − − GND_STRP HARWIN D3082−46 Yes J5, J6, J7, J8 4 VBAT, VOUT banana connectors, DC 60 V 16 A. (Ø 4 mm nickel−plated brass socket) − BANANA JACK Hirschmann BO 10 Yes J9, J10, J11 3 SMB connectors Populate J9 only SMB/V IMS 111510001 Yes LTR1, LTR2, LTR3 3 Breakable Single Row Header (2 Pins) − − CON2−2.54 TYCO Amp 5−826629−0 Yes S1, S2, S3 3 EN, BPEN, FSEL, Breakable Single Row Header (3 Pins) − − CON3−2.54 TYCO Amp 5−826629−0 Yes U1 1 NCP6361 − − WLCSP9 ON Semiconductor NCP6361 Yes Q1 1 NTD3055L104 DNP DPACK−1234 ON Semiconductor Engineering, DNP Yes H1, H2, H3, H4 4 Standoff nut & Standoff screw − STANDOFF HOLE Keystone Electronics 1903C & 4814K−ND Yes − − NOTE DNP = Do Not Populate http://onsemi.com 5 NCP6361EVB 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. 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