- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄379480 > UCC3830DWP-4 (Texas Instruments, Inc.) 5-Bit Microprocessor Power Supply Controller PDF資料下載
參數(shù)資料
| 型號(hào)： | UCC3830DWP-4 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 5-Bit Microprocessor Power Supply Controller |
| 中文描述： | 5位微處理器電源控制器 |
| 文件頁數(shù)： | 6/10頁 |
| 文件大?。?/td> | 419K |
| 代理商： | UCC3830DWP-4 |
6
UCC3830-4/-5/-6
The
foldback, as shown in Figure 3. When the output of the
power supply is short circuited, the output voltage falls.
When the output voltage reaches 1/2 of its nominal volt-
age (COMMAND/2) then the output current is reduced.
This feature reduces the amount of current in the
MOSFET, diode and capacitors, and insures high reliabil-
ity.
UCC3830-x
incorporates
short
circuit
current
Enabling/Disabling the UCC3830-x Gate Drive
The CAO/ENBL pin can be used to disable the UCC3830
gate drive by forcing this pin below 0.8V, as shown in
Figure 4. Bringing the voltage below the valley of the
PWM oscillator ramp will insure a 0% duty cycle, effec-
tively disabling the gate drive. A low noise open collector
signal should be used as an Enable/Disable command.
Setting the Output Voltage Using the DAC
The 5-bit Digital-to-Analog Converter (DAC) is pro-
grammed according to Table 1. The COMMAND voltage
is always active as long as the UCC3830 VIN pin is
above the undervoltage lockout voltage. The output gate
drive, GATE, is disabled at certain DAC codes, as shown
in Table 1. Disabling the gate drive disables the power
supply.
Operating the 5-Bit Controller with Intel’s 4-Bit
Pentium Pro
The UCC3830-x 5-Bit Controller is completely backward
compatible. When the fifth bit, D4 is left open (4-Bit Pro-
cessor in circuit), the UCC3830-x acts as a 4-Bit control-
ler with the COMMAND voltage fully compatible with
Intel’s 4-Bit Pentium
Pro family.
APPLICATION INFORMATION (cont.)
Digital Command
D3
D2
1
1
1
1
1
1
1
1
1
0
1
0
1
0
1
0
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
Table 1. Programming the command voltage for the UCC3830-x.
Command
Voltage
1.300
1.350
1.400
1.450
1.500
1.550
1.600
1.650
1.700
1.750
1.800
1.850
1.900
1.950
2.000
2.050
GATEHI/GATELO
Status
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1
Enabled
Enabled
Enabled
Enabled
Enabled
Enabled
Digital Command
D3
D2
1
1
1
1
1
1
1
1
1
0
1
0
1
0
1
0
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
Command
Voltage
2.000
2.100
2.200
2.300
2.400
2.500
2.600
2.700
2.800
2.900
3.000
3.100
3.200
3.300
3.400
3.500
GATEHI/GATELO
Status
Note 1
Enabled
Enabled
Enabled
Enabled
Enabled
Enabled
Enabled
Enabled
Enabled
Enabled
Enabled
Enabled
Enabled
Enabled
Enabled
D4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
D1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
D0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
D4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
D1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
D0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Figure 4. Disabling the UCC3830-x.
Figure 5. Input capacitors current waveform.
UDG-96189
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UCC3830DWP-5 | 5-Bit Microprocessor Power Supply Controller |
| UCC3830DWP-6 | 5-Bit Microprocessor Power Supply Controller |
| UCC3830PWM-4 | 5-Bit Microprocessor Power Supply Controller |
| UCC3830PWM-5 | 5-Bit Microprocessor Power Supply Controller |
| UCC3830PWM-6 | 5-Bit Microprocessor Power Supply Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC3830DWP-5 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:5-Bit Microprocessor Power Supply Controller |
| UCC3830DWP-6 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:5-Bit Microprocessor Power Supply Controller |
| UCC3830DWTR-4 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Mode SMPS Controller |
| UCC3830DWTR-5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| UCC3830DWTR-6 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Mode SMPS Controller |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。