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Maxim > Design Support > Technical Documents > Application Notes > Battery Management > APP 113
Maxim > Design Support > Technical Documents > Application Notes > Power-Supply Circuits > APP 113
Keywords: DC-DC converter, switch-mode, current source, MAX1771, battery charger, Ni-Cd, NiMH,
Nickel Cadmium, Nickel Metal Hydride, dc dc controller, battery charging
APPLICATION NOTE 113
Boost DC-DC Voltage Regulator Converts To
Current Source for Battery Charging
Jul 09, 1998
Abstract: A boost DC-DC controller built with the MAX1771 DC-DC controller makes a simple switch-
mode current source that is useful for battery charging. The voltage control loop is disabled so that the
current control loop provides regulation.
The switching regulator of Figure 1 includes independent loops of current and voltage feedback for
maintaining regulation. By disabling the voltage loop, you can use the current loop to implement a
general-purpose current source.
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