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參數(shù)資料
| 型號： | UCD9240PHR |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | UCD9240 Digital Point of Load System Controller |
| 中文描述： | UCD9240系列數(shù)字點系統(tǒng)控制器的負荷 |
| 文件頁數(shù)： | 14/21頁 |
| 文件大?。?/td> | 572K |
| 代理商： | UCD9240PHR |
UCD9240
Digital Point of Load System Controller
SLUS766
– APRIL 2007
14
www.ti.com
Table 2 PMBus Address bins
Address
Voltage
12
11
10
9
8
7
6
5
4
3
2
1
0
Resistor
2.299
1.815
1.463
1.177
0.953
0.749
0.604
0.486
0.383
0.308
0.249
0.196
0.157
209
165
133
107
86.6
68.1
54.9
44.2
34.8
28.0
22.6
17.8
14.3
A low impedance (short) on the address pin the produces a voltage below the minimum voltage will cause the
PMBus address to default to address 0x0B. A high impedance (open) on the address pin that produces a voltage
above the maximum voltage will also cause the PMBus address to default to address 0x0B.
Figure 3 PMBus Voltage Adjustment Methods
Output Voltage Adjustment
The Output Voltage is programmed by issuing VOUT_COMMAND, VOUT_TRIM or VOUT_MARGIN, …
commands on the PMBus..
Soft-Start, Soft-Stop and Normal Operation
During the soft-start or soft-stop the internal gain is changed to have +-8mV resolution This allows the ADC to
have a wider dynamic range during the start/stop ramp. During normal operation the gain is adjusted to +-1mv
resolution for tighter regulation.
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