Torex XC9281B33E0R-G User manual

5.5V/0.6A Step-down DC/DC Converter with HiSAT-COT Control
XC9281B33E0R-G Evaluation Board User Manual
CAUTION
ENGINEERING EVALUATION PURPOSES ONLY
This evaluation board is made for the purpose of the product evaluation.
It is strictly prohibited to use this evaluation board for any other purpose.
Torex Semiconductor does not guarantee that all samples will perform in
exactly the same way and we recommend that you always consult our
product data sheets for the minimum and maximum specifications.
It is also important that you evaluate all our products carefully before mass
production and in case of any doubt, please contact your Torex
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HiSAT-COT Control, 0.6A Synchronous Step-Down DC/DC Converters
Evaluation Board Picture
Evaluation Board SPEC
XC9281/XC9282 Series Features
・Input Voltage Range
・・・・・・・・・・・・・・・・・・
2.5V ~ 5.5V
・Output Voltage Range
・・・・・・・・・・・・・・・・・・
0.7V ~ 3.6V (step 0.05V)
・Max Output Current
・・・・・・・・・・・・・・・・・・
600mA max.
・Switching frequency
・・・・・・・・・・・・・・・・・・
4MHz or 6MHz
・Max Duty Cycle
・・・・・・・・・・・・・・・・・・
100%
・Small Solution Size
・・・・・・・・・・・・・・・・・・
3.52 mm2
・Fast Load Transient Response
・0.6 x 0.3mm Ceramic Cap. Available
・Low EMI Noise
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XC9281B33E0-EVB-01
Ta=25℃
CONDITON. MIN. TYP. MAX. UNIT
Vin Input Voltage Range - 2.5 - 5.5 V
Vout Setting Output Voltage - - 3.3 - V
Iout Output Current - 0 - 600 mA
fosc Switching frequency - - 6.0 - MHz
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HiSAT-COT Control, 0.6A Synchronous Step-Down DC/DC Converters
Quick Start Procedure
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XC9281B33E0-EVB-01
A
Vout
Rout
Multimeter
VMultimeter
Iout
Vin
V
A
Multimeter
Multimeter
DC Power
Supply
Iin
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HiSAT-COT Control, 0.6A Synchronous Step-Down DC/DC Converters
Schematic
BOM
Required Circuit Component
Additional Demo Board Circuit Components
CL
4.7uF
Ceramic cap., 6.3V/4.7uF
0603
GRM035R60J475ME15D
10uF
Ceramic cap., 50V/10uF
3225
CGA6P3X7S1H106K
Manufacture
-
5.5V/0.6A Step-down DC/DC
WLP-5-06
XC9282B33E0R-G
TOREX
Murata
Item
Value
Description
Size [mm]
Part Number
Murata
L
0.47uH
Inductor, 0.47uH
1005
MCEE1005TR47MHN
Taiyo Yuden
CIN
4.7uF
Ceramic cap., 6.3V/4.7uF
XC9281B33E0R-G Evaluation Board
IC
0603
GRM035R60J475ME15D
TDK
Item
Value
Description
Size [mm]
Part Number
Manufacture
CBLK
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XC9281B33E0-EVB-01
VIN
GND
CIN
VIN LX
GND
VOUT CL
LVOUT
GND
IC
CE
CE
CBLK
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HiSAT-COT Control, 0.6A Synchronous Step-Down DC/DC Converters
PCB Layout
Layer 1
Layer 2
Layer 3
Layer 4
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XC9281B33E0R-G Evaluation Board
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HiSAT-COT Control, 0.6A Synchronous Step-Down DC/DC Converters
Test Result
(1) Output Voltage vs Output Current @Ta=25℃
(2) Efficiency vs Output Current Ta=25℃
(3) Ripple Voltage vs Output Current Ta=25℃
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0
20
40
60
80
100
0.1 1 10 100 1000
Efficiency : EFFI (%)
Output Current : IOUT (mA)
Vin=4.2V
Vin=5V
3.1
3.2
3.3
3.4
3.5
0.1 1 10 100 1000
Output Voltage : VOUT (V)
Output Current : IOUT (mA)
Vin=4.2V
Vin=5V
0
50
100
150
200
0.1 1 10 100 1000
Ripple Voltage : Vr (mV)
Output Current : IOUT (mA)
Vin=4.2V
Vin=5V
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HiSAT-COT Control, 0.6A Synchronous Step-Down DC/DC Converters
Test Result
(4) Output Voltage Waveform @ Ta=25℃
(4-1) Vin = 5.0V, Iout = 1mA (4-2) Vin = 5.0V, Iout = 300mA
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XC9281B33E0-EVB-01
100ns/div
Lx (2V/div)
Vout (10mV/div)
100ns/div
Lx (2V/div)
Vout (10mV/div)
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HiSAT-COT Control, 0.6A Synchronous Step-Down DC/DC Converters
Test Result
(5) Start-up Waveform @ Ta=25℃
(5-1) Vin = 5V, Iout = 10mA (5-2) Vin = 5V, Iout = 300mA
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80us/div
Vout (1V/div)
CE(5V/div)
Input Current(100mA/div)
80us/div
Vout (1V/div)
CE(5V/div)
Input Current(100mA/div)
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HiSAT-COT Control, 0.6A Synchronous Step-Down DC/DC Converters
Test Result
(6) Load Transient Waveform @ Ta=25℃
(6-1) Vin = 5V, Iout = 1mA ⇔300mA
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XC9281B33E0R-G Evaluation Board
40us/div
Vout (50mV/div)
Output Current (100mA/div)
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HiSAT-COT Control, 0.6A Synchronous Step-Down DC/DC Converters
Test Result
(7) Radiation EMI : CISPR-32/VCCI 10m Peak
Condition
IC : XC9282B18ER-G
Vin : 3.7V
Vout
: 1.8V
Iout : 100mA
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30 100050 100 500
0
70
10
20
30
40
50
60
周波数
レベル
[MHz]
[dB(μV/m)]
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HiSAT-COT Control, 0.6A Synchronous Step-Down DC/DC Converters
【Appendix】How to calculate DC/DC Converter or DC/DC Controller.
It can be calculated by the following "WEB DC/DC Simulation".
日本語 :
English :
简体中文 :
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https://www.torex.co.jp/technical-support/dcdc-simulation/
https://www.torexsemi.com/technical-support/dcdc-simulation/
https://www.torex.com.cn/technical-support/dcdc-simulation/
XC9281B33E0-EVB-01
XC9281B33E0R-G Evaluation Board
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HiSAT-COT Control, 0.6A Synchronous Step-Down DC/DC Converters
【Appendix】How to reduce the spike noise caused by measurement (Probing method with oscilloscope)
* Condition : XC9236, Vin=3.6V/Vout=1.8V/100mA
English :
https://www.torexsemi.com/technical-support/tips/reduction-spike-noise/
日本語 : https://www.torex.co.jp/technical-support/tips/reduction-spike-noise/
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1us/div
1us/div
Vout (10mV/div)
Vout (10mV/div)
Vout
GND
GND
Vout
Probing method : Before improvement
Probing method : After
Output
Capacitor
Spike Noise : 35mV Spike Noise: 10mV
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