参数资料
型号: TPS65073TRSLRQ1
厂商: TEXAS INSTRUMENTS INC
元件分类: 电源管理
英文描述: POWER SUPPLY SUPPORT CKT, PQCC48
封装: 6 X 6 MM, 0.4 MM PITCH, PLASTIC, QFN-48
文件页数: 66/90页
文件大小: 1375K
代理商: TPS65073TRSLRQ1
5
-
0
5
10
15
20
25
30
35
40
45
50
0
4000
8000
12000
16000
20000
24000
28000
32000
36000
40000
RNTC(T)
Rp(T)
Temperature-(T)
5
-
0
5
10
15 20
25
30
35
40 45
50
0.8
0.9
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
VTS(T)
Temperature-(T)
www.ti.com
SLVSAP7 – JANUARY 2011
Figure 47. NTC [R(T)] and NTC in Parallel to RT2 [Rges(T)]
Figure 48. Resulting TS Voltage
As Figure 47 shows, the result is an extended charging temperature range at lower temperatures. The upper
temperature limit is shifted to lower values as well resulting in a V(HOT) temperature of slightly less than 45°C.
Therefore RT3 is needed to shift the temperature range to higher temperatures again. Figure 48 shows the result
for:
RT2 = 47k
RT3 = 820R
Using these values will extend the temperature range for charging to –5°C to 50°C.
Copyright 2011, Texas Instruments Incorporated
69
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