Vicor PI2002-EVAL1 Active ORing With Load Disconnect Evaluation Board - Manual (Page 4)

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