PS200 datasheet(12/36 Pages) MICROCHIP

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PS200

DS21891B-page 10

TABLE 2-1:

PS200 LITHIUM CONFIGURABLE PARAMETERS

Step 1 – Configuration

Parameter Name

Bytes

Lower

Limit

Upper

Limit

Typical

Value

Description

MfgName

—

N/A

Microchip

ASCII value.

DevName

—

N/A

PS200

ASCII value.

SeriesCells

255

Number of series connected cells in the battery pack.

Capacity (mAh)

65535

2000

Full-charge capacity of the battery pack.

PWMFreq

LUT value which determines the PWM frequency.

Step 2 – Charging Limits

Parameter Name

Bytes

Lower

Limit

Upper

Limit

Typical

Value

Description

PCVMin (mV)

65535

2500

Minimum cell voltage required to enable charging with precharge

conditions.

PCVMax (mV)

65535

3000

Maximum cell voltage required to enable charging with

precharge conditions.

PCCurrent (mA)

65535

200

Charging current during precharge.

PCTempMin

255

Minimum temperature required to enable charging with

precharge conditions.

PCTempMin value = (temperature °C * 10 + 200)/4;

so typical value of 50 = 0°C.

PCTempMax

255

175

Maximum temperature required to enable charging with

precharge conditions.

PCTempMax value = (temperature °C * 10 + 200)/4;

so typical value of 175 = 50°C.

PCTime (min)

255

Duration of precharge.

CRVTarg (mV)

65535

4200

Target cell voltage in current regulation. This is set to the fully

charged voltage of one cell, typically, as specified by the cell

manufacturer.

CRCurrent (mA)

65536

2000

Charging current during current regulation.

CRTimeMax (min)

255

Current regulation time limit.

VRVrech (mV)

65536

3780

Voltage regulation recharge cell voltage. Charger will

automatically begin charging if cell voltage of pack falls below

SeriesCells * VRVrech.

VRIMin (mA)

65536

150

Voltage regulation fully charged current. This is the value of the

taper current or IMIN which will determine that the battery is fully

charged.

VRTimeMax (min)

255

Voltage regulation time limit.

TempMax

255

200

Maximum temperature required to enable charging during

current regulation and voltage regulation.

TempMax value = (temperature °C * 10 + 200)/4;

so typical value of 200 = 60°C.

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