L6227D STMicroelectronics, L6227D Datasheet
L6227D
Specifications of L6227D
Available stocks
Related parts for L6227D
L6227D 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 RC A BRIDGE ...
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 ...