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AD8451

Data Sheet

EVALUATION BOARD

INTRODUCTION

The AD8451-EVALZ evaluation board is a convenient

standalone platform for evaluating the major elements of the

AD8451, either as a standalone component or connected to a

battery test/formation system.

In the latter configuration, the AD8451-EVALZ operates just as

it would within a system including the PWM and dc-to-dc

power converter. Simply connect the current and voltage sense

voltages from the system directly to the board terminus. This

feature is used when setting or evaluating loop compensation

using a field of passive compensation components. Figure 51 is

a photograph of the AD8451-EVALZ.

FEATURES AND TESTS

SMA connectors provide access for input voltages to the

sensitive instrumentation (IA) and difference (DA) amplifiers.

ISVP and ISVN connectors are the IA inputs, and BVP and

BVN are the DA inputs. These inputs accept the dc voltages

from battery current and voltage measurement sources, or from

a precision dc voltage source. SMA connectors ISET and VSET

are available for precision dc control voltages for CC or CV

battery charging voltages. SMA ISREFLO is available for

applying a nonzero reference voltage to the IA. SMA VCTRL

connects to the input of a dc-to-dc power converter as seen in

Figure 52. Convenient test loops are provided connecting scope

probes or instruments for the remainder of the input/output.

The MODE switch selects between the charge and discharge

option. Figure 52 is a schematic of the AD8451-EVALZ. Table 6

lists and describes the various switches and functions.

Figure 51. Photograph of the AD8451-EVALZ

Rev. 0 | Page 26 of 32

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