參數(shù)資料
型號(hào)： TPS2490EVM-001
廠商： Texas Instruments, Inc.
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： +48V Hot Swap Power Manager Evaluation Kit(在+48V熱插拔電源管理中應(yīng)用的評(píng)估)
中文描述： 48V熱插拔電源管理評(píng)估套件（在48V的熱插拔電源管理中應(yīng)用的評(píng)估）
文件頁數(shù)： 19/24頁
文件大?。?/td> 170K
代理商： TPS2490EVM-001
Verifying the EVM Operation
3-3
Getting Started
3.2.2
Functional Test
1)
Plug the EVM main board (HPA016) into the EVM backplane board
(HPA018) P1B connector. Due to the symmetric design of the connector,
the board can be inserted in either direction.
2)
Connect the oscilloscope probes as shown in Figure 31.
3)
Set the oscilloscope channel amplifiers to the following scale settings:
a)
CH1: 50 V/div at first line
b)
CH2: 20 V/div at fourth
line
c)
CH3: 2 V/div at fifth line
d)
CH4: 2 A/div at position just above the bottom line (eighth line)
4)
Set the oscilloscope timebase to 1 ms/div.
5)
Set the scope to trigger on the rising edge of Channel 1 at about a 20-V
level and 10% horizontal trigger position.
6)
Set the mode to NORMAL.
7)
Turn on the power supply. Verify that the voltages shown in Table 31 are
obtained on each DMM display.
Table 31.TPS2490EVM or TPS2491EVM DMM Readings—Output OFF
DMM #
Test Points
Voltage Reading
48
±
0.5 VDC
0
±
1.0 VDC
0
±
0.1 VDC
0
±
0.1 VDC
4.0
±
0.1 VDC
0
±
0.1 VDC
DMM1
On HPA018: TP2B +, TP1B – (INPUT Voltage)
DMM2
On HPA016: TP12 +, TP16 (OUT Voltage)
DMM3
On HPA016: TP5 +, TP8 (PROG Voltage)
DMM4
On HPA016: TP13 +, TP14 (PG Voltage)
DMM5
On HPA016: TP4 +, TP2 (VREF Voltage)
DMM6
On HPA016: TP11 +, TP7 (GATE Voltage)
8)
On the EVM backplane board (HPA018), place the SW1 switch in the ON
position. Moving the DMM lead connections as required, verify that the
voltages shown in Table 32 are obtained on each DMM display.
Table 32.TPS2490EVM or TPS2491EVM DMM Readings—Output ON
DMM #
Test Points
Voltage Reading
48
±
0.5 VDC
48
±
1.0 VDC
1.05
±
0.1 VDC
48
±
0.1 VDC
4.0
±
0.1 VDC
62
±
2.0 VDC
DMM1
On HPA018: TP2B +, TP1B – (INPUT Voltage)
DMM2
On HPA016: TP12 +, TP16 (OUT Voltage)
DMM3
On HPA016: TP5 +, TP8 (PROG Voltage)
DMM4
On HPA016: TP13 +, TP14 (PG Voltage)
DMM5
On HPA016: TP4 +, TP2 (VREF Voltage)
DMM6
On HPA016: TP11 +, TP7 (GATE Voltage)
9)
On the oscilloscope, verify a sweep was obtained which is similar to the
one shown in Figure 32. Verify that the total turnon time, t
ST
, as defined
in Figure 32, is 2.5
±
1.0 ms.
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