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参数资料
| 型号： | TPS54331QDRQ1 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 2 A SWITCHING REGULATOR, 684 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | GREEN, PLASTIC, DSO-8 |
| 文件页数： | 3/25页 |
| 文件大小： | 735K |
| 代理商： | TPS54331QDRQ1 |
0.01 F
4.7F
Vin7V
28V
–
0.01 F
0.1 F
332k
68.1k
47pF
0
47 F
Vout3.3V
IoutMax3 A
6.8 H
10.2k
3.24k
29.4k
1000pF
47 F
www.ti.com
SLVSAB5 – NOVEMBER 2010
APPLICATION INFORMATION
Figure 13. Typical Application Schematic
STEP BY STEP DESIGN PROCEDURE
The following design procedure can be used to select component values for the TPS54331. Alternately, the
SwitcherProSoftware may be used to generate a complete design. The SwitcherPro Software uses an
iterative design procedure and accesses a comprehensive database of components when generating a design.
This section presents a simplified discussion of the design process.
To begin the design process a few parameters must be decided upon. The designer needs to know the following:
Input voltage range
Output voltage
Input ripple voltage
Output ripple voltage
Output current rating
Operating frequency
For this design example, use the following as the input parameters
Table 3. Design Parameters
DESIGN PARAMETER
EXAMPLE VALUE
Input voltage range
7 V to 28V
Output voltage
3.3 V
Input ripple voltage
300 mV
Output ripple voltage
30 mV
Output current rating
3 A
Operating Frequency
570 kHz
SWITCHING FREQUENCY
The switching frequency for the TPS54331 is fixed at 570 kHz.
Copyright 2010, Texas Instruments Incorporated
11
Product Folder Link(s): TPS54331-Q1
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