Philips Semiconductors

PIP3221-DC

Dual channel high-side TOPFET™

Product data

Rev. 01 — 20 February 2004

3 of 16

9397 750 12361

© Koninklijke Philips Electronics N.V. 2004. All rights reserved.

4.

Block diagram

Fig 3.

Elements of the dual high-side TOPFET switch.

SHORT CIRCUIT

PROTECTION

TEMPERATURE

SENSOR

CURRENT LIMIT

CHARGE PUMP

VOLTAGE

REGULATOR

CHANNEL2

STATUS DIAGNOSIS

UNDERVOLTAGE

PROTECTION

OVERVOLTAGE

PROTECTION

OPEN CIRCUIT

SENSOR

CONTROL

LOGIC2

SHORT CIRCUIT

PROTECTION

TEMPERATURE

SENSOR

CURRENT LIMIT

CHARGE PUMP

VOLTAGE

REGULATOR

CHANNEL1

UNDERVOLTAGE

PROTECTION

OVERVOLTAGE

PROTECTION

OPEN CIRCUIT

SENSOR

CONTROL

LOGIC1

S

L2

L1

I2

G

I1

4/mb

1

5

7

6

3

2

B

POWER

MOSFET1

POWER

MOSFET2

03ap07

RG

RLG1

RLG2