User`s guide

System Operation

4.1.4.3 PROGRAMMING CONNECTIONS

The SMPS AC/DC Reference Design comes pre-programmed with the control software

and does not require a programmer to be connected to the system. However, ICSP™

headers are provided on the primary and secondary side for software development and

testing.

Figure 4-6 shows the location of the primary side programming header (J2 on the

control board).

FIGURE 4-6: PRIMARY SIDE PROGRAMMING HEADER

Figure 4-7 shows the location of the secondary side programming header (J1 on the

control board).

FIGURE 4-7: SECONDARY SIDE PROGRAMMING HEADER

The secondary side ICSP header is isolated from the AC Mains, so there are no special

precautions necessary when programming the device.

Primary Side

ICSP™ Header

CAUTION

The primary side ICSP header (J2) is not isolated from the AC Mains. An isolated USB

hub must be used to connect the programmer to the computer's USB port. If the power

supply of the SMPS AC/DC Reference Design is not isolated before programming the

device, ensure that the computer is isolated or removed from the grid.

Secondary Side

ICSP™ Header