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