Texas Instruments 0.6 1.6 MHz Boost Converters With 22V Internal FET Switch Evaluation Module LM2731XEVAL/NOPB LM2731XEVAL/NOPB 데이터 시트
제품 코드
LM2731XEVAL/NOPB
0
50 100 150 200 250 300 350 400 450 500
50
60
70
80
90
100
IOUT[mA]
EF
F
IC
IEN
C
Y
[%
]
200 mV/Div
200 mA/Div
TIME (200
µ
s/DIV)
I
O
V
OUT
ripple
5V/Div
200 mA/Div
TIME (5 ms/DIV)
I
O
V
OUT
2V/Div
V
IN
100 mV/Div
5V/Div
TIME (200 ns/DIV)
V
OUT
ripple
V
SW
Basic Application Circuit - LM2731X
7
Basic Application Circuit - LM2731X
Table 4. LM2731XBill of Materials (V
IN
= 5V, V
OUT
= 12V, I
OUT
= 500mA
Designation
Description
Size
Manufacturer Part #
Vendor
C1
Cap 2.2µF 16V
1206
EMK316BJ225ML
Taiyo Yuden
C2
Cap 4.7µF 16V
1812
EMK432BJ475ML
Taiyo Yuden
C3
Cap 220pF 50V
0805
VJ0805A221JXACW1BC
Vishay
R1
RES, 51k Ohm, 5%, 0.1W
0805
CRCW080551K0JNEA
Vishay
R2
RES, 118k Ohm, 1%, 0.1W
0805
CRCW0805118KFKEA
Vishay
R3
RES, 13.3k Ohm, 1%, 0.1W
0805
CRCW080513K3FKEA
Vishay
L1
Shielded Inductor 10µH 4A
CDH53-4R7MC
Sumida
D1
Diode 20V 0.5A
SOT23
MBR0520
International
Rectifier
U1
IC LM2731XMF
Texas Instruments
Figure 15. Start Up
Figure 16. Switching Waveform and
V
IN
=5V, V
OUT
=12V, I
OUT
=500mA
Output Voltage Ripple
V
IN
=5V, V
OUT
=12V, I
OUT
=500mA
Figure 17. Load Transient
Figure 18. Efficiency
V
IN
=5V, V
OUT
=12V, I
OUT
= 200mA to 400mA
V
IN
=5V, V
OUT
=12V
6
AN-1280 LM2731/LM2733 Evaluation Board
SNVA066B – April 2003 – Revised April 2013
Copyright © 2003–2013, Texas Instruments Incorporated