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參數(shù)資料
| 型號(hào)： | TPS65552ARGTT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3 A BATTERY CHARGE CONTROLLER, PQCC16 |
| 封裝： | PLASTIC, QFN-16 |
| 文件頁數(shù)： | 20/21頁 |
| 文件大小： | 982K |
| 代理商： | TPS65552ARGTT |
www.ti.com
PRODUCT
PREVIEW
t
= N_TURN x L
OFF
I
PEAK
V
OUT
÷
è
(2)
Reference Voltage
Termination Voltage Setting
TPS65552A
SLVS567 – JULY 2005
The TPS65552A does not have its own reference voltage circuit inside, and the TPS65552A uses the VCC input
voltage as a reference to detect I(PEAK), V(ZERO), and V(FULL). Therefore, voltage input at VCC is approximately
5 V.
VCC differs from 5 V by system limitations. Table 1 shows the dependence of each function of TPS65552A to
VCC.
Table 1. VCC Dependence of TPS65552A
PARAMETER
EQUATION
VCC
4.5
5
5.5
I(PEAK1)
0.52 x VCC - 0.92
1.42
1.68
1.94
I(PEAK2)
0.24 x VCC - 0.33
0.75
0.87
0.99
V(FULL)
TPS65552A
5.8 x VCC
26.1
29.0
31.9
over VDS
0.24 x VCC
1.08
1.2
1.32
To obtain a different termination voltage, transformers of different turn ratio are required. Table 2 shows the
matrix of termination voltage and the turn ratio of the transformer. The table only shows a ONE to integer ratio
while there are no limitations for a turn ratio of the transformer in a real application circuit, example 1:10.5 (=
10:105).
Table 2. Termination Voltage Setting Table
TPS65552A
29 [V]
1:10
290
1:11
319
1:12
348
8
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