IC DRIVER FULL BRIDGE DUAL 24DIP

L6227N

Manufacturer Part NumberL6227N
DescriptionIC DRIVER FULL BRIDGE DUAL 24DIP
ManufacturerSTMicroelectronics
TypeH Bridge
L6227N datasheet
 


Specifications of L6227N

Input TypeNon-InvertingNumber Of Outputs4
On-state Resistance730 mOhmCurrent - Output / Channel1.4A
Current - Peak Output2.8AVoltage - Supply8 V ~ 52 V
Operating Temperature-25°C ~ 125°CMounting TypeThrough Hole
Package / CasePowerSSO-24Operating Supply Voltage8 V to 52 V
Supply Current1.4 AMounting StyleThrough Hole
For Use With497-6817 - EVAL BOARD FOR L6227QLead Free Status / RoHS StatusLead free / RoHS Compliant
Other names497-3648  
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OPERATING SUPPLY VOLTAGE FROM 8 TO 52V
2.8A OUTPUT PEAK CURRENT (1.4A DC)
R
0.73
TYP. VALUE @ T
DS(ON)
OPERATING FREQUENCY UP TO 100KHz
NON DISSIPATIVE OVERCURRENT
PROTECTION
DUAL INDEPENDENT CONSTANT t
CURRENT CONTROLLERS
SLOW DECAY SYNCHRONOUS
RECTIFICATION
CROSS CONDUCTION PROTECTION
THERMAL SHUTDOWN
UNDER VOLTAGE LOCKOUT
INTEGRATED FAST FREE WHEELING DIODES
TYPICAL APPLICATIONS
BIPOLAR STEPPER MOTOR
DUAL DC MOTOR
DESCRIPTION
The L6227 is a DMOS Dual Full Bridge designed for
motor control applications, realized in MultiPower-
BLOCK DIAGRAM
VBOOT
V
BOOT
CHARGE
VCP
PUMP
THERMAL
PROTECTION
EN
A
IN1
A
IN2
A
VOLTAGE
REGULATOR
10V
5V
EN
B
IN1
B
IN2
B
September 2003
DMOS DUAL FULL BRIDGE DRIVER
WITH PWM CURRENT CONTROLLER
= 25 °C
j
PowerDIP24
PWM
(20+2+2)
OFF
BCD technology, which combines isolated DMOS
Power Transistors with CMOS and bipolar circuits on
the same chip. The device also includes two inde-
pendent constant off time PWM Current Controllers
that performs the chopping regulation. Available in
PowerDIP24 (20+2+2), PowerSO36 and SO24
(20+2+2) packages, the L6227 features a non-dissi-
pative overcurrent protection on the high side Power
MOSFETs and thermal shutdown.
V
BOOT
OVER
OCD
A
CURRENT
DETECTION
10V
GATE
LOGIC
ONE SHOT
MONOSTABLE
OVER
CURRENT
OCD
DETECTION
B
GATE
LOGIC
L6227
PowerSO36
ORDERING NUMBERS:
L6227N (PowerDIP24)
L6227PD (PowerSO36)
L6227D (SO24)
VS
A
V
BOOT
OUT1
A
OUT2
A
10V
SENSE
A
PWM
+
MASKING
TIME
VREF
-
SENSE
A
COMPARATOR
RC
A
BRIDGE A
V S
B
OUT1
B
OUT2
B
SENSE
B
VREF
B
RC
B
BRIDGE B
D99IN1085A
SO24
(20+2+2)
1/22

L6227N Summary of contents

  • Page 1

    ... MOSFETs and thermal shutdown. V BOOT OVER OCD A CURRENT DETECTION 10V GATE LOGIC ONE SHOT MONOSTABLE OVER CURRENT OCD DETECTION B GATE LOGIC L6227 PowerSO36 ORDERING NUMBERS: L6227N (PowerDIP24) L6227PD (PowerSO36) L6227D (SO24 BOOT OUT1 A OUT2 A 10V SENSE A PWM + MASKING TIME VREF - SENSE A COMPARATOR ...

  • Page 2

    L6227 ABSOLUTE MAXIMUM RATINGS Symbol Parameter V Supply Voltage S V Differential Voltage between OUT1 , OUT2 , SENSE OUT1 , OUT2 Bootstrap Peak Voltage BOOT V ,V Input ...

  • Page 3

    THERMAL DATA Symbol R Maximum Thermal Resistance Junction-Pins th-j-pins R Maximum Thermal Resistance Junction-Case th-j-case R th-j-amb1 Maximum Thermal Resistance Junction-Ambient R th-j-amb1 Maximum Thermal Resistance Junction-Ambient R th-j-amb1 Maximum Thermal Resistance Junction-Ambient R th-j-amb2 Maximum Thermal Resistance Junction-Ambient (1) ...

  • Page 4

    L6227 PIN DESCRIPTION PACKAGE SO24/ PowerSO36 Name PowerDIP24 PIN # PIN # 1 10 IN1 2 11 IN2 3 12 SENSE OUT1 18, GND 18 OUT1 9 ...

  • Page 5

    PIN DESCRIPTION (continued VREF (6) Also connected at the output drain of the Over current and Thermal protection MOSFET. Therefore, it has to be driven putting in series a resistor with a value in the ...

  • Page 6

    L6227 ELECTRICAL CHARACTERISTICS (continued ° 48V, unless otherwise specified) amb s Symbol Parameter t D(on)IN Input to out turn ON delay time t (8) RISE Output rise time t D(off)EN Enable to out turn OFF ...

  • Page 7

    Figure 1. Switching Characteristic Definition EN V th(ON) V th(OFF) I OUT 90% 10% D01IN1316 Figure 2. Overcurrent Detection Timing Definition I OUT I SOVER ON BRIDGE OFF V EN 90% 10% t FALL t t D(OFF)EN D(ON) ...

  • Page 8

    L6227 CIRCUIT DESCRIPTION POWER STAGES and CHARGE PUMP The L6227 integrates two independent Power MOS Full Bridges. Each Power MOS has an Rdson = 0.73ohm (typical value @ 25°C), with intrinsic fast freewheeling diode. Cross conduction protection is achieved using ...

  • Page 9

    TRUTH TABLE INPUTS EN IN1 IN2 Don't care High Z = High Impedance Output GND (Vs) = GND during Ton, Vs during Toff ...

  • Page 10

    L6227 Figure 8. Output Current Regulation Waveforms I OUT V REF R SENSE V SENSE V REF 2.5V ON SYNCHRONOUS RECTIFICATION OFF D02IN1351 Figure 9 shows the magnitude of the Off Time t culated from the ...

  • Page 11

    PWM stage. Furthermore, the on time t RCRISE can not be smaller than the minimum on time t t > 2.5 s (typ. value ...

  • Page 12

    L6227 Figure 10. Area where t can vary maintaining the PWM regulation. ON 100 10 1 0.1 SLOW DECAY MODE Figure 11 shows the operation of the bridge in the Slow Decay mode. At the start of the off time, ...

  • Page 13

    NON-DISSIPATIVE OVERCURRENT PROTECTION The L6227 integrates an Overcurrent Detection Circuit (OCD). This circuit provides protection against a short circuit to ground or between two phases of the bridge. With this internal over current detection, the external cur- rent sense resistor ...

  • Page 14

    L6227 Figure 13. Overcurrent Protection Waveforms I OUT I SOVER th(ON) V th(OFF) ON OCD OFF ON BRIDGE OFF t OCD(ON) 14/22 V EN(LOW DELAY EN(FALL) OCD(OFF) t D(OFF)EN DISABLE ...

  • Page 15

    Figure 14. t versus C DISABLE Figure 15. t versus C DELAY 0.1 1 THERMAL PROTECTION In ...

  • Page 16

    L6227 APPLICATION INFORMATION A typical application using L6227 is shown in Fig. 16. Typical component values for the application are shown in Table 3. A high quality ceramic capacitor in the range of 100 to 200 nF should be placed ...

  • Page 17

    OUTPUT CURRENT CAPABILITY AND IC POWER DISSIPATION In Fig. 17 and Fig. 18 are shown the approximate relation between the output current and the IC power dissipa- tion using PWM current control driving two loads, for two different driving types: ...

  • Page 18

    L6227 Figure 19. Mounting the PowerSO package. Slug soldered to PCB with dissipating area Figure 20. PowerSO36 Junction-Ambient thermal resistance versus on-board copper area. º Figure ...

  • Page 19

    DIM. MIN. TYP. MAX. A 3.60 a1 0.10 0.30 0.004 a2 3. 0.10 b 0.22 0.38 0.008 c 0.23 0.32 0.009 D (1) 15.80 16.00 0.622 D1 9.40 9.80 0.370 E 13.90 14.50 0.547 e 0.65 e3 ...

  • Page 20

    L6227 mm DIM. MIN. TYP. MAX. A 4.320 A1 0.380 A2 3.300 B 0.410 0.460 0.510 B1 1.400 1.520 1.650 c 0.200 0.250 0.300 D 31.62 31.75 31.88 E 7.620 8.260 e 2.54 E1 6.350 6.600 6.860 e1 7.620 L ...

  • Page 21

    DIM. MIN. TYP. MAX. MIN. A 2.35 2.65 0.093 A1 0.10 0.30 0.004 B 0.33 0.51 0.013 C 0.23 0.32 0.009 (1) 15.20 15.60 0.598 D E 7.40 7.60 0.291 e 1.27 H 10.0 10.65 0.394 h 0.25 0;75 ...

  • Page 22

    ... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics ...