National Instruments ISO5851, User Manual

Page: 8 / 16

Printed-Circuit Board
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4 Printed-Circuit Board
The ISO5851 is an isolated gate driver with several important features. The printed-circuit board
(PCB)/EVM, as shown in
Figure 8 ISO5851 EVM , has been designed to support the ISO5851 device and
to allow the user to evaluate its basic operation and features. The left side of the PCB contains the
interface to the input, control, and status functions of the integrated circuit (IC). The right side of the PCB
has been designed to interface to an IGBT. No electrical connections exist between the right and left sides
of the PCB.
Figure 8. ISO5851 EVM
Refer to the ISO5851EVM schematic shown in Figure 3 and the bill of materials given in Table 2 , to
become familiar with the PCB components and layout.
The following table pertains to the labels on the EVM board ( Figure 8 ):
Given Read As
VCC1 V
CC1
VCC2 V
CC2
VEE2 V
EE2
VCE V
CE
VIN+ IN+
VIN– IN–
/FAULT FLT
4.1 ISO5851 Operation
4.1.1 Left-Side Operation: DC Power, Control, and Status
4.1.1.1 DC Input Power
The left side of the ISO5851 (and therefore the PCB) can be operated using either a +3-V (±10%) to +5.5-
V (±10%) dc power supply. As the current requirement is extremely low, the user can choose to operate
the ISO5851 EVM by battery. The dc power supply must be connected to the TB3 terminal having V
CC1
(+5.5-V DC) and GND1 (+5.5-V DC return).
8 ISO5851 Evaluation Module SLLU218 – June 2015
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