MCP1012
1W DEMONSTRATION BOARD
USER’S GUIDE
2020 Microchip Technology Inc.
DS50002932A-page 23
Chapter 5. Setup Three
5.1
SETUP 3
INTRODUCTION
This setup will show the Sleep/Wake-Up functions of the MCP1012 in Start-Up mode
when it is supplied by an external power supply (15V) at V
DD
pin and a load is applied
at the output (the resistor R20 - 51
is connected through SW1.1).
The
Sleep/Wake-Up functions are active in both Start-Up and Normal Run mode.
STEPS
1. Connect/disconnect the jumpers and the switch SW1 according to
Note 1:
SW1.1 is the first switch on the right side of the board.
2. Connect the voltmeter at the TB3 connector with the positive test probe at the
upper terminal.
3. If available, connect two oscilloscope probes at TP6 (GATE output) and TP4
(PULSE input). Connect the ground probes on the primary side, at the TP14 or
TP15 Test Points.
4. Connect the DC power supply 15V at the TB2 connector:
- the positive terminal must be connected at the upper terminal of the TB2 PCB
connector
- the negative terminal must be connected to the bottom terminal of the TB2 PCB
connector
5. Connect the DC power supply 5.0V at the TB4 connector:
- the positive terminal must be connected at the upper terminal of the TB4 PCB
connector
- the negative terminal must be connected to the bottom terminal of the TB4 PCB
connector
6. Connect a DC HV power supply in the range of 120–500 VDC at the TB1
connector:
- the positive terminal must be connected at the uppermost terminal of the TB1
PCB connector
- the negative terminal must be connected to the bottommost terminal of the TB1
PCB connector (the middle terminal of the TB1 PCB connector is not connected)
7. Read the voltmeter and check if the output voltage of the board is in the range of
4.5V to 5.5V.
TABLE 5-1:
THE STATE OF THE JUMPERS AND SWITCH - SETUP 3
J1
J2
J3
J4
J5
J6
J7
JP1
SW1.1
SW1.2
SW1.3
SW1.4
ON
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
OFF
