INFINEON BTS 5246-2L User Manual

Target Data Sheet, V1.2, Aug 2006

BTS 5246-2L

Smart High-Side Power Switch

PROFET

Two Channels, 19 mΩ

Automotive Power

Never stop thinking.

Smart High-Side Power Switch

BTS 5246-2L

Table of Contents Page

Product Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

1Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

1.1 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

1.2 Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

2 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

2.1 Pin Assignment BTS 5246-2L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

2.2 Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

3 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3.1 Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4 Block Description and Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . .10

4.1 Power Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

4.1.1 Output On-State Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.1.2 Input Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.1.3 Inductive Output Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.1.4 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.2 Protection Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

4.2.1 Over Load Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.2.2 Reverse Polarity Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.2.3 Over Voltage Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.2.4 Loss of Ground Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.2.5 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.3 Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

4.3.1 ON-State Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.3.2 OFF-State Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.3.3 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5 Package Outlines BTS 5246-2L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

6 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Target Data Sheet 2 V1.2, 2006-08-14

Smart High-Side Power Switch
PROFET

Product Summary

The BTS 5246-2L is a dual channel high-side power
switch in PG-DSO-12-9 package providing
embedded protective functions.

The power transistor is built by a N-channel vertical
power MOSFET with charge pump. The device is
monolithically integrated in Smart SIPMOS
technology.

Operating voltage

V

bb(on)

BTS 5246-2L

PG-DSO-12-9

4.5..28V

Over voltage protection

On-State resistance

Nominal load current (one channel active)

Adjustable current limitation

Current limitation repetitive

Standby current for whole device with load

V

bb(AZ)

R

DS(ON)

I

L(nom)

I

L(LIM)

I

L(SCr)

I

bb(OFF)

Basic Features

• Very low standby current

• 3.3 V and 5 V compatible logic pins

• Improved electromagnetic compatibility (EMC)

• Stable behavior at under voltage

• Logic ground independent from load ground

• Secure load turn-off while logic ground disconnected

• Very low leakage current from OUT to GND

• Green product (RoHS compliant)

41 V

19 mΩ

6A

7 A / 40 A

7 A / 40 A

7.5 µA

Type Ordering Code Package

BTS 5246-2L On request PG-DSO-12-9

Target Data Sheet 3 V1.2, 2006-08-14

Smart High-Side Power Switch

Protective Functions

• Reverse battery protection with external resistor

• Short circuit protection

• Overload protection

• Multi-step current limitation

• Adjustable current limitation

• Thermal shutdown with restart

• Over voltage protection with external resistor

V

• Loss of ground and loss of

• Electrostatic discharge protection (ESD)

protection

bb

Diagnostic Functions

• IntelliSense functionality for each channel

• Proportional load current sense signal by current source

• Open load detection in ON-state by load current sense

• Open load detection in OFF-state by voltage source

• Feedback on over temperature and current limitation in ON-state

• Suppressed thermal toggling of fault signal

BTS 5246-2L

Applications

• µC compatible high-side power switch with diagnostic feedback for 12 V grounded
loads

• All types of resistive, inductive and capacitive loads

• Most suitable for loads with high inrush currents, so as lamps

• Replaces electromechanical relays, fuses and discrete circuits

Target Data Sheet 4 V1.2, 2006-08-14

Smart High-Side Power Switch

BTS 5246-2L

Overview

1Overview

The BTS 5246-2L is a dual channel high-side power switch (Two Channels, 19 mΩ) in

PG-DSO-12-9 power package providing embedded protective functions. Integrated
resistors at each input pin (IN1, IN2, CLA) reduce external components.

The load current limitation can be adjusted in two steps by the current limit adjust pin
(CLA).

The IntelliSense pins IS1 and IS2 provide a sophisticated diagnostic feedback signal
including current sense function, open load in off state and short circuit protection.

The power transistor is built by a N-channel vertical power MOSFET with charge pump.
The inputs are ground referenced CMOS compatible. The device is monolithically
integrated in Smart SIPMOS technology.

1.1 Block Diagram

channel 1

VBB

IN1

IS1

CLA

IN2

IS2

internal

power
supply

ESD

protecti on

channel 2

load cur r ent

sense

gate control

&

logic

control and protecti on cir cuit

char ge pum p

open load

detec tion

tem per atur e

sensor

equival ent to

channel 1

GND

cl amp for

inductive load

multi step

load current

limitation

OUT1

OUT2

Figure 1 Block Diagram

Target Data Sheet 5 V1.2, 2006-08-14

Smart High-Side Power Switch

BTS 5246-2L

1.2 Terms

Following figure shows all terms used in this target data sheet.

V

bb

V

IN1

V

IN2

V

IS1

Figure 2 Terms

I

IN1

IN1

I

IN2

IN2

I

IS1

IS1

I

IS2

BTS 5246-2L

IS2

V

IS2

I

CL A

CLA

V

CL A

VBB

GND

I

bb

I

GND

OUT1

OUT2

Overview

I

L1

I

L2

V

V

V

V

OUT1

DS2

OUT2

DS1

Ter m s2 ch . em f

Target Data Sheet 6 V1.2, 2006-08-14

Smart High-Side Power Switch

BTS 5246-2L

2 Pin Configuration

2.1 Pin Assignment BTS 5246-2L

(top view)

GND

IN1

IS1

IS2

IN2

VBB

1

2

3

4

5

6

12

11

10

9

8

7

heat slug (VBB)

Pin Configuration

VBB

OUT1

OUT1

OUT2

OUT2

CLA

Figure 3 Pin Configuration PG-DSO-12-9

2.2 Pin Definitions and Functions

Pin Symbol I/O

OD

2 IN1 I Input signal for channel 1

5 IN2 I Input signal for channel 2

3 IS1 O Diagnosis output signal channel 1

4 IS2 O Diagnosis output signal channel 2

7 CLA I Current limit adjust input for channel 1&2

10,11 OUT1

8, 9 OUT2

1)

1)

O Protected high-side power output channel 1

O Protected high-side power output channel 2

1 GND - Ground connection

6,12,

VBB - Positive power supply for logic supply as well as

heat slug

Function

output power supply

1)

All output pins of each channel have to be shorted.

Target Data Sheet 7 V1.2, 2006-08-14

Smart High-Side Power Switch

BTS 5246-2L

Electrical Characteristics

3 Electrical Characteristics

3.1 Maximum Ratings

Stresses above the ones listed here may cause permanent damage to the device.
Exposure to maximum rating conditions for extended periods may affect device reliability.

T

= 25 °C (unless otherwise specified)

j

Pos. Parameter Symbol Limit Values Unit Test

Conditions

t ≤ 100 h

R = 0.2 Ω

1)

Power Supply

3.1.1 Supply voltage

3.1.2 Current through ground pin

3.1.3 Supply voltage for full short

circuit protection (single pulse)
(

T

= -40°C .. 150°C)

j

V

bb

I

GND

V

bb(SC)

min. max.

1828V

-150 mA t ≤ 2min

020VL = 8 µH

3.1.4 Voltage at power transistor V

3.1.5 Supply Voltage for Load Dump

V

protection

Power Stages

3.1.6 Load current

3.1.7 Maximum energy dissipation

I

E

single pulse

3.1.8 Power dissipation (DC)

P

Logic Pins

3.1.9 Voltage at input pin

V

DS

bb(LD)

L

AS

tot

IN

-5

-16

52 V

40
53

I

L(LIM)

130 mJ

1.4 W

19 V

V

A

R

= 2 Ω

I

R

= 2.25 Ω

L

R

= 6.8 Ω

L

3)

4)

T

= 150°C

j(0)

I

= 6 A

L(0)

=12V

V

bb

5)

T

= 85 °C

a

T

≤ 150 °C

j

t ≤ 2min

2)

3.1.10 Current through input pin

Target Data Sheet 8 V1.2, 2006-08-14

I

IN

-2.0

-8.0

2.0 mA

t ≤ 2min

Smart High-Side Power Switch

BTS 5246-2L

T

= 25 °C (unless otherwise specified)

j

Electrical Characteristics

Pos. Parameter Symbol Limit Values Unit Test

Conditions

t ≤ 2min

t ≤ 2min

3.1.11 Voltage at current limit adjust

pin

3.1.12 Current through current limit

adjust pin

3.1.13 Current through sense pin

V

I

CLA

I

IS

CLA

min. max.

-5

19 V

-16

-2.0

2.0 mA

-8.0

-5 10 mA

Temperatures

3.1.14 Junction temperature

3.1.15 Dynamic temperature increase

T

∆T

j

j

-40 150 °C

60 °C

while switching

3.1.16 Storage temperature

T

stg

-55 150 °C

ESD Susceptibility

3.1.17 ESD susceptibility HBM

IN, CLA

OUT

1)

R and L describe the complete circuit impedance including line, contact and generator impedances

2)

Load Dump is specified in ISO 7637, RI is the internal resistance of the Load Dump pulse generator

3)

Current limitation is a protection feature. Operation in current limitation is considered as “outside” normal
operating range. Protection features are not designed for continuous repetitive operation.

4)

Pulse shape represents inductive switch off: I

5)

Device mounted on PCB (50 mm x 50 mm x 1.5 mm epoxy, FR4) with 6 cm2 copper heatsinking area (one
layer, 70 µm thick) for V

connection. PCB is vertical without blown air.

bb

V

ESD

IS

(t) = IL(0) * (1 - t / t

L

-1

-2

-4

); 0 < t < t

peak

kV according to
1
2

EIA/JESD
22-A 114B

4

Please see Figure 8

peak.

Target Data Sheet 9 V1.2, 2006-08-14