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參數資料
| 型號： | TPS5602IDBTR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 3 A DUAL SWITCHING CONTROLLER, 202.4 kHz SWITCHING FREQ-MAX, PDSO30 |
| 封裝： | GREEN, PLASTIC, TSSOP-30 |
| 文件頁數： | 7/27頁 |
| 文件大小： | 949K |
| 代理商： | TPS5602IDBTR |
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TPS5602
DUAL, FAST, HIGH EFFICIENCY CONTROLLER FOR DSP POWER
SLVS217 – JUNE 1999
15
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
layout considerations (continued)
D When configuring the high-side driver as a floating driver, the connection from LL to the power FETs should
be as short and as wide as possible.
D When configuring the high-side driver as a floating driver, the bootstrap capacitor (connected from LH to
LL) should be placed close to the TPS5602.
D When configuring the high-side driver as a ground-referenced driver, LL should be connected to DRVGND.
D The bulk storage capacitors across VIN should be placed close to the power FETs. High-frequency bypass
capacitors should be placed in parallel with the bulk capacitors and connected close to the drain of the
high-side FET and to the source of the low-side FET.
D High-frequency bypass capacitors should be placed across the bulk storage capacitors on VO.
D LH and LL should be connected very close to the drain and source, respectively, of the high-side FET. LH
and LL should be routed very close to each other to minimize differential-mode noise coupling to these
traces. Ceramic decoupling capacitors should be placed close to where HISENSE connects to VIN, to
reduce high-frequency noise coupling on HISENSE.
D The output voltage sensing trace should be isolated from the switching node and/or inductor pulses by the
use of a ground trace or plane.
test results
The tests are conducted at TA = 25°C, the input voltage is 5 V (if not specifically noted).
Figure 14
3.3-V OUTPUT EFFICIENCY
76
78
80
82
84
86
88
90
92
94
96
98
0.1 0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
IO – Output Current – A
Efficiency
–
%
Figure 15
1.8-V OUTPUT EFFICIENCY
60
65
70
75
80
85
90
95
0.1 0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
IO – Output Current – A
Efficiency
–
%
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