AP2200 datasheet(7/16 Pages) AKM

Part #	AP2200

Description	Step-up DC/DC converter IC supporting 1 or 2 solar cells

PDF	16 Pages

Scroll/Zoom	100%

Manufacturer	AKM [Asahi Kasei Microsystems]

Direct Link	http://www.akm.com

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7 / 16 page

[ AP2200]

MS1462-E-00

Output voltage setting

The output voltage (VTGT) is selectable based on the SEL pin. (Table 5)

Table 5 Output voltage setting

SEL pin level

Output voltage (VTGT)

setting

4 V

5 V

MPPT control

The voltage step-up operation is paused per the cycle tSH and the open circuit voltage (VOC) of the

solar cell(s) is sampled. This PWM function first calculates the voltage (VPM) from VOC where the

maximum output can be obtained based on the solar cell properties and then controls the step-up

converter to obtain the voltage.

Output voltage control

The step-up converter always monitors VOUT. As soon as VOUT reaches the setting voltage (VTGT),

the converter stops the voltage step-up. When the voltage step-up operation is stopped, VOUT

decreases due to load consumption. When VOUT drops by VTGTHYS or more form VTGT, the step-up

operation is restarted.

AP2200 Datasheet(PDF) 7 Page - Asahi Kasei Microsystems