L6226PDTR;L6226DTR;L6226D;L6226PD;L6226N;中文规格书,Datasheet资料

October 2009Doc ID 9452 Rev 41/31

L6226

DMOS dual full bridge driver

Features

■Operating supply voltage from 8 to 52 V ■ 2.8 A output peak current (1.4 A DC)■R DS(on) 0.73 Ω typ. value @ T J = 25 °C ■Operating frequency up to 100 kHz

■Programmable high side overcurrent detection and protection ■Diagnostic output ■Paralleled operation ■Cross conduction protection ■Thermal shutdown ■Undervoltage lockout

■

Integrated fast free wheeling diodes

Applications

■Bipolar stepper motor ■

Dual or quad DC motor

Description

The L6226 is a DMOS dual full bridge designed for motor control applications, realized in

MultiPower-BCD technology, which combines isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. Available in PowerDIP24 (20+2+2), PowerSO36 and SO24 (20+2+2) packages, the L6226 features thermal shutdown and a non-dissipative overcurrent

detection on the high side power MOSFETs plus a diagnostic output that can be easily used to implement the overcurrent protection.

https://www.360docs.net/doc/6a1518423.html,

Contents L6226

Contents

1Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.2Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.3Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4Circuit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.1Power stages and charge pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.2Logic inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.3Non-dissipative overcurrent detection and protection . . . . . . . . . . . . . . . 13

4.4Thermal protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6Paralleled operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6.1Output current capability and IC power dissipation . . . . . . . . . . . . . . . . . 21 7Thermal management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 8Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 9Ordering codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 10Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

2/31Doc ID 9452 Rev 4

L6226Maximum ratings

Doc ID 9452 Rev 43/31

1 Maximum ratings

1.1

Absolute maximum ratings

1.2 Recommended operating conditions

Table 1.

Absolute maximum ratings

Symbol Parameter Test conditions Value Unit

V S Supply voltage

V SA = V SB = V S 60 V

V OD Differen tial voltage between

VS A , OUT1A , OUT2A , SENSE A and VS B , OUT1B , OUT2B , SENSE B

V SA = V SB = V S = 60V;

V SENSEA = V SENSEB = GND 60 V

OCD A ,

OCD B

OCD pins voltage range

-0.3 to +10 V PROGCL A ,

PROGCL B PROGCL pins voltage range

-0.3 to +7

V V BOOT Bootstrap peak voltage V SA = V SB = V S

V S + 10

V V IN ,V EN Input and enable voltage range

-0.3 to +7 V V SENSEA , V SENSEB Voltage range at pins SENSE A and SENSE B

-1 to +4

I S(peak)Pulsed supply current (for each V S pin), internally limited by the overcurrent protection V SA = V SB = V S ; t PULSE < 1ms 3.55 A

I S RMS supply current (for each V S pin)

V SA = V SB = V S 1.4 A

T stg , T OP

Storage and operating

temperature range

-40 to 150

°C

Table 2.

Recommended operating conditions

Symbol Parameter Test conditions Min.

Max.

Unit

V S Supply voltage

V SA = V SB = V S 8 52 V

V OD

Differential voltage between

VS A , OUT1A , OUT2A , SENSE A and VS B , OUT1B , OUT2B , SENSE B

VS A = VS B = V S ; VSENSE A = VSENSE B 52 V

V SENSEA , V SENSEB Vo ltage range at pins SENSE A

and SENSE B

(pulsed t W < t rr ) (DC) -6-1 6 1 V V I OUT

RMS output current

1.4

T J Operating junction temperature -25 +125 °C f sw

Switching frequency

100

kHz

Maximum ratings L6226

4/31Doc ID 9452 Rev 4

1.3 Thermal data

Table 3.

Thermal data

Symbol

Description

PowerDIP24SO24PowerSO36

Unit R th-j-pins Maximum thermal resistance junction-pins 19 15 -°C/W R th-j-case Maximum thermal resistance junction-case -- 2 °C/W R th-j-amb1 Maximum thermal resistance junction-am bient 1 44 52 -°C/W R th-j-amb1 Maximum thermal resistance junction-amb ient 2 --36 °C/W R th-j-amb1 Maximum thermal resistance junction-am bient 3 --16 °C/W R th-j-amb2 Maximum thermal resistance junction-ambient 4

°C/W

L6226Pin connections

Doc ID 9452 Rev 45/31

2 Pin connections

1. The slug is internally connected to pins 1,18,19 and 36 (GND pins).

Table 4.Pin description

Pin n.

Name

Type

Function

SO24/ PowerDIP24

PowerSO36

110IN1A Logic input Bridge A logic input 1.211IN2A Logic input Bridge A logic input 2.3

SENSEA

Power

supply

Bridge A source pin. This pin must be connected to power ground directly or through a sensing power resistor.

413OCDA

Open drain

output

Bridge A overcurrent detection and thermal protection pin.An internal open drain

transistor pulls to GND when overcurrent

on bridge A is detected or in case of thermal protection. 515OUT1A

Power output Bridge A output 1.

6, 7, 18, 191, 18, 19, 36GND

GND Signal ground terminals. In Power DIP and SO packages, these pins are also used for heat dissipation toward the PCB. 822OUT1B

Power output

Bridge B output 1.

Pin connections

L6226

6/31Doc ID 9452 Rev 4

924OCDB

Open drain

output

Bridge B overcurrent detection and thermal protection pin.An internal open drain

transistor pulls to GND when overcurrent

on bridge B is detected or in case of thermal protection.1025SENSEB Power supply

Bridge B source pin. This pin must be connected to power ground directly or through a sensing power resistor.

1126IN1B Logic input Bridge B input 112

IN2B

Logic input Bridge B input 2

1328PROGCLB R pin

Bridge B overcurrent level programming. A resistor connected between this pin and Ground sets the programmable current limiting value for the bridge B. By connecting this pin to Ground the

maximum current is set.This pin cannot be left non-connected.

1429ENB

Logic input Bridge B enable. LOW logic level switches

OFF all Power MOSFETs of bridge B. If not

used, it has to be connected to +5V .1530VBOOT

Supply voltage Bootstrap voltage needed for driving the upper Power MOSFETs of both bridge A and bridge B.1632OUT2B

Power output Bridge B output 2.

1733VSB

Power supply Bridge B power supply voltage. it must be connected to the supply voltage together with pin VSA.

204VSA

Power supply Bridge A power supply voltage. it must be connected to the supply voltage together with pin VSB.215OUT2A Power output Bridge A output 2.

VCP

Output

Charge pump oscillator output.

Table 4.

Pin description (continued)

Pin n.

Name

Type

Function

SO24/ PowerDIP24

PowerSO36

L6226

Pin connections

Doc ID 9452 Rev 47/31

8ENA

Logic input Bridge A enable. LOW logic level switches

OFF all Power MOSFETs of bridge A. If not

used, it has to be connected to +5V .

24 9 PROGCLA R Pin

Bridge A overcurrent level programming. A resistor connected between this pin and Ground sets the programmable current limiting value for the bridge A. By

connecting this pin to ground the maximum current is set.This pin cannot be left non-connected.

Table 4.

Pin description (continued)

Pin n.

Name

Type

Function

SO24/ PowerDIP24

PowerSO36

8/31Doc ID 9452 Rev 4

3 Electrical characteristics

T A = 25 °C, V S = 48 V , unless otherwise specified

Table 5.

Electrical characteristics

Symbol Parameter Test conditions Min Typ Max Unit

V Sth(ON) T urn-on threshold 5.8 6.3 6.8 V V Sth(OFF) T urn-off threshold

5.5

I S Quiescent supply current All bridges OFF;

T J = -25 °C to 125 °C (1)

5 10 m T j(OFF)

Thermal shutdown temperature

165

°C

Output DMOS transistors R DS(ON)

High-side + low-side switch ON resistance T J = 25 °C 1.47 1.69 Ω

T J =125 °C (1)

2.35 2.70

I DSS

Leakage current

EN = Low; OUT = V S 2 mA EN = Low; OUT = GND

-0.3

Source drain diodes

V SD Forward

ON voltage I SD = 2.8A, EN = LOW 1.15 1.3

V t rr Reverse recovery time I f = 1.4A

300 ns t fr

Forward recovery time

200

Logic input V IL Low level logic input voltage -0.3 0.8 V V IH High level logic input voltage 2 7

V I IL Low level logic input current GND logic input voltage -10

μA I IH High level logic input current 7V logic input voltage

10 μA V th(ON)

T urn-on input threshold

1.8

2.0 V V th(OFF) T urn-off input threshold

0.8

1.3

V th(HYS) Input threshold hysteresis 0.25 0.5 V Switching characteristics

t D(on)EN Enable to out turn ON delay time (2)I LOAD =1.4 A, resistive load 500

800

t D(on)IN Input to out turn ON delay time I LOAD =1.4 A, resistive load (dead time included) 1.9 μs

t RISE

Output rise time (2)

I LOAD =1.4A, resistive load

40 250

ns t D(off)EN Enable to out turn OFF delay time (2) I LOAD =1.4A, resistive load 500 800 1000 ns t D(off)IN

Input to out turn OFF delay time

I LOAD =1.4A, resistive load 500 800 1000

ns t FALL Output fall time

(2) I LOAD =1.4A, resistive load

40 250

Doc ID 9452 Rev 49/31

Symbol Parameter Test conditions Min Typ Max Unit

t dt Dead time protection 0.5

1 μs

f CP

Charge pump frequency

-25°C

0.6 1 MHz

Over current detection Is over

Input supply over current detection

threshold

-25°C

A ROPDR Open drain ON resistance I = 4mA

40 60

Ω t OCD(ON) OCD turn-on delay time (3)I = 4mA; C EN < 100pF 200 ns t OCD(OFF) OCD turn-off delay time (3)

I = 4mA; C EN < 100pF

100

1.Tested at 25 °C in a restricted range and guaranteed by characterization

2.See Figure 3

3.See Figure 4

Table 5.

Electrical characteristics (continued)

10/31Doc ID 9452 Rev 4

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L6226PDTR L6226DTR L6226D L6226PD L6226N