Precision Integrated Analog Front End, Controller,
and PWM for Battery Test and Formation Systems AD8452 Data Sheet
FEATURES GENERAL DESCRIPTION CC and CV battery test and formation modes with
transparent and automatic switchover, for systems of
20 Ah or less
Precise measurement of voltage and current
Independent feedback control blocks
Highly accurate, factory trimmed instrumentation and
differential amplifiers
In-amp for current sense gain: 66 V/V
Difference amplifier for voltage sense gain: 0.4 V/V
Stable over temperature: offset voltage drift 50V
4.7µF VIN R
C 16187-042 To charge, the applied voltage must be greater than the voltage of
the battery under charge and the current must not exceed the
manufacturers specification, usually expressed as a fraction of the
full C rating. When discharging, the opposite conditions apply;
the discharge voltage must be less than the unloaded battery
voltage, and the current flows out of the battery, reversing the
polarity of the shunt voltage. Figure 40. DH and DL Output Waveforms for Charge Mode Figure 42. Recommended Filter Configuration for
Input Voltages Greater Than 50 V AD8452 Data Sheet
5V For optimum protection from switching and other ambient
noise, all of these supply pins must be bypassed to ground with …