EVBUM2210-D - 231 KB

NCP6361EVB
NCP6361 WLCSP9
Evaluation Board
User'sManual
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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
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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
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NCP6361EVB
BOARD DESCRIPTION
Figure 2. Board Description
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NCP6361EVB
BOARD SCHEMATIC
Figure 3. Board Schematic
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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
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NCP6361EVB
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