PS2070

DS21927A-page 2

 2005 Microchip Technology Inc.

1.0

PRODUCT OVERVIEW

The PS2070 evaluation board is a complete charger

evaluation circuit subsystem based on the Microchip

PS200 charge controller. The board is designed to

operate with a rechargeable battery pack consisting of

lithium based, nickel based or lead acid cells. The

board includes the Microchip PS200 battery monitor IC

in a socket, a 100 mOhm sense resistor and power

components to enable charging currents to a maximum

of 2.0A.

2.0

GENERAL SETUP

The Microchip PS2070 evaluation board plugs directly

into a PowerInfo 2 interface board or PowerCal 2

calibration board. These development tools, connected

to a PC running PowerTool™ 200 (PS020) develop-

ment software, form a complete PS200 battery charger

evaluation environment. The information that follows

will guide you through the setup of the various features

available.

Please

refer

to

the

PowerInfo

2 or

PowerCal 2 data sheet for information on setting up

those products.

2.1

Connectors

• JBat – Battery input connector. The battery pack

to be charged is connected here. Looking into the

connector on the board, the pins from left to right

are:

- BAT+: Battery pack positive

- CLK:

SMBus clock

- DTA:

SMBus data

- TMP:

Temperature

- GND:

Battery pack negative

• PHost – Charger host interface. The PowerInfo 2

or PowerCal 2 is connected here. Looking into the

connector on the board, the pins from left to right

are:

- GND:

Battery pack negative

- TMP:

Temperature

- DTA:

SMBus data

- CLK:

SMBus clock

- BAT+: Battery pack positive

• J1 – In-Circuit Serial Programming (ICSP)

interface. The PS200 Flash memory can be

reprogrammed via this interface. This is only

necessary to upgrade to a newer firmware

revision or install firmware for a different

rechargeable chemistry.

• J3 – Charger DC power supply input. Input volt-

current limited or fused to a maximum of 2.5A.

2.2

Jumpers

• JP2 – Jumper to configure board for standard

operation with PS200 pin 2 (LED 2) connected to

the red LED or connected to PHost CLK for

communication with PowerTool 200 PC software.

• JP18 – Jumper to disconnect the overvoltage

protection divider from PS200 pin 18 (VOVP). This

allows pin 18 to be used for ICSP.

• JP19 – Jumper to disconnect the temperature

divider from PS200 pin 19 (TEMP). This allows

pin 19 to be used for ICSP.

• OPV – Jumper to configure overvoltage protection

(OVP) limit.

Jumper Position

1-2

2-3

PS200 pin 2 to Red LED

X

O

PS200 pin 2 to PHost CLK

O

X

Legend: O = open, X = connect

Jumper Position

1-2

Disable VOVP (Enable ICSP™)

O

Enable VOVP input

X

Legend: O = open, X = connect

Jumper Position

1-2

Disable TEMP (Enable ICSP™)

O

Enable TEMP input

X

Legend: O = open, X = connect

Jumper Position

1-8

(1 Cell)

2-7

(2 Cells)

3-6

(3 Cells)

4-5

(4 Cells)

OVP 4404 mV

X

O

O

O

OVP 8808 mV

O

X

O

O

OVP 13200 mV

O

O

X

O

OVP 17640 mV

O

O

O

X

No OVP limit

O

O

O

O

Legend: O = open, X = connect