KA35S281 Просмотр технического описания (PDF) - Kasin Electronics Corporation

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KA35S281

Lead-Acid Battery Charger

Kasin Electronics Corporation 

Functional diagram:

KA35S280/281

Lead-Acid Battery Charger

TEMP

SW

KA35S28X Block Diagram

+

VLTF -

-

VHTF +

I Max -

+

Reset

-

+

ADC

90

1

-

+

En

5mV +-

But. Press

Phase

Controller

2

Unit

Source Select: 0- Current

3

Comp.

A

10

A>B

B

1- Voltage

4

4

5

Counter

7

Up

CNT

Down

Clk

1

0

MUX

1

50mV

0

VFLT

4

VMin

VMax

Comp.

A

A>B

Osc. 6Hz

MUX

4

Ref. Gen.

VBLK

B A=B

4

5

MS0

MS1

Cyc/Flt

LED0

LED1

LED2

LED3

VDD

I Min

0

I Cond

1

I Max

2

I Th

3

Temp.

compensation

MUX

0

50mV

1

MUX

3

1

2

MUX

0

1 VMin

2 VMax

3

Temp.

compensation

VFLT

VBLK

VSS

Faster Charge

I SNS

VBAT

Figure 2 – KA35S28X Block Diagram

Functional description:

The KA35S28X functional operation is described in terms of:

 Pin configuration

o Mode selection pins

o Faster Charge pin

o Cyclic/Float use pin

 Fixed and Configurable Thresholds

 Charge algorithms

o 3-Step voltage charge

o Current charge

o Pulsed-current charge

 Temperature monitoring

o Temperature compensation

o Disabling Temperature Sensing

 Charge monitoring

 Fault detection

o Battery insertion and removal

o Shorted, opened, or damaged cells detections

2011 Nov 18

© 2011 Kasin Technology Inc.

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