Datasheet

SLUU155 – March 2003
13
Full-Featured –48-V Hot Swap Power Manager
3.2 Verifying the EVM Operation
The following procedure steps may be used to verify functional operation of the EVM after receipt.
3.2.1 Equipment Setup
On the EVM board, place the ENABLE switch S1 in the OFF position.
Set the DIP switches 1 through 4 of switch SW1 to the ON position.
Turn on power supply number 1 and adjust the output for about 48 V. Verify the supply current limit is set to allow
at least 3 amps. Turn on power supply number 2 and adjust its output to 5 V. Turn off the power supplies.
Connect the EVM and test equipment as shown in Figure 5.
OSCILLOSCOPE
CH 1
CH 2
CH 3
CH 4
Full–Featured –48–V
Hot Swap Power Manager
Evaluation Module
J2 (–48V_IN)
J1 (–48V_RTN)
TP5
TP7
TP6
TP23
TP8/TP15 (GND)
PS No. 1
(+48 VDC)
–+
PS No. 2
(+5 VDC)
–+
(VS) J5
TP1
TP14
(GND) TP8/TP15
Connect leads as
desired
VOLTS COM
DIGITAL
VOLTMETER
(VOUT–) J4
Figure 5. Full-Featured –48-V Hot Swap EVM Setup
On the oscilloscope, set the channel amplifiers to the following scales:
• CH1: 5 V/div
• CH2: 2 V/div
• CH3: 5 V/div
• CH4: 20 V/div
Set the scope to trigger on the rising edge of Channel 1, at about a 2.5-V level. Set the scope timebase to 10 ms,
and the trigger mode to NORMAL.