Initial Test Set Up
To test the PI2002-EVAL1 evaluation board it is necessary to
configure the jumpers (J5 and J6) first based on the required
board configuration.
Failure to configure the jumpers prior to the testing may
result in improper circuit behavior.
Baseline Test Procedure
(Refer to Figure 3)
1.0 Recommended Equipment
1.1
Two DC power supplies - 0-10 V; 25 A.
1.2
DC power supply 12 V; 100 mA.
1.3
DC electronic load - 30 A minimum.
1.4
Digital Multimeter
1.5
Oscilloscope.
1.6
Appropriately sized interconnect cables.
1.7
Safety glasses.
1.8
PI2002 Product Data sheet.
Figure 3
– Layout configuration for a typical redundant power application, OCD configured for fast gate turn on.
Picor Corporation • www.picorpower.com
PI2002-EVAL1 User Guide Rev 1.0
Page 4 of 11
Reference Designator
Value
Functional Description
C1, C5
1 µF
VC Bypass Capacitor
C9
22 µF
Output (Load) Capacitor
C3, C4, C7, C8
Not installed
Snubber to reduce voltage ringing when the device turns off
C2, C6
18 nF
OCT off timer Capacitor
D1, D2
LED
To indicate a fault exist when it is on
J5, J6
Jumper
SCD to select for Gate high charge current or Gate low charge current
Q1, Q2, Q3, Q4
N-MOSFET
ORing Main Switch
R1, R12
8.45 K
Ω
UV Voltage Divider Resistor ( R2UV in Figure 4)
R2, R13
13.3 K
Ω
OV Voltage Divider Resistor ( R2OV in Figure 4)
R11, R22
10
Ω
VC Bias resistor
R10, R21
4.99 K
Ω
LED Current Limiter
R3, R14
2.00 K
Ω
UV Voltage Divider Resistor ( R1UV in Figure 4)
R4, R15
2.00 K
Ω
OV Coltage Divider Resistor ( R1OV in Figure 4)
R7, R14
Not Installed
SCD Ground connecting Resistor
U1, U2
PI2002
Picor Active ORing with Load Disconnect Controller
Table 4
– Component functional description
