ST L6206 DMOS DUAL FULL BRIDGE DRIVER Data Sheet User Manual

Summary

The L6206 is a high-performance DMOS dual full bridge driver designed for robust motor control applications, including stepping and general DC motor operation. This component integrates advanced protection features such as programmable overcurrent detection, thermal shutdown, and fast freewheeling diodes. The manual provides essential technical documentation covering absolute maximum ratings, recommended operating conditions, detailed pin connections, and comprehensive thermal data. It is the perfect resource for engineers developing reliable power switching circuits requiring high efficiency and integrated safety protections.

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ST L6206 DMOS DUAL FULL BRIDGE DRIVER Data Sheet User Manual - Page 1

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DMOS DUAL FULL BRIDGE DRIVER

OPERATING SUPPLY VOLTAGE FROM 8 TO 52V 5.6A OUTPUT PEAK CURRENT (2.8A DC) RDS(ON) 0.3Ω TYP. VALUE @ Tj = 25 °C OPERATING FREQUENCY UP TO 100KHz PROGRAMMABLE HIGH SIDE OVERCURRENT

DETECTION AND PROTECTION Power DIP24 Power SO36

DIAGNOSTIC OUTPUT PARALLELED OPERATION

ORDERING NUMBERS:

CROSS CONDUCTION PROTECTION L6206N (Power DIP24)

THERMAL SHUTDOWN L6206PD (Power SO36) L6206D (SO24)

UNDER VOLTAGE LOCKOUT INTEGRATED FAST FREE WHEELING DIODES

BCD technology, which combines isolated DMOS

TYPICAL APPLICATIONS

Power Transistors with CMOS and bipolar circuits on

BIPOLAR STEPPER MOTOR

the same chip. Available in Power DIP24 (20+2+2),

DUAL OR QUAD DC MOTOR

Power SO36 and SO24 (20+2+2) packages, the L6206 features thermal shutdown and a non-dissipa-

DESCRIPTION tive overcurrent detection on the high side Power

The L6206 is a DMOS Dual Full Bridge designed for MOSFETs plus a diagnostic output that can be easily motor control applications, realized in Multi Power- used to implement the overcurrent protection.

BLOCK DIAGRAM

VBOOT VBOOT

CHARGE

PROGCLA

OCDA OCDA CURRENT

DETECTION

OUT1A OUT2A

THERMAL 10V 10V

PROTECTION

ENA GATE

LOGIC

SENSEA

VOLTAGE REGULATOR 5V

BRIDGE A

OVER OCDB CURRENT DETECTION

PROGCLB

OUT1B OUT2B

LOGIC SENSEB

IN1B IN2B BRIDGE B

D99IN1088A

September 2003 1/23

Page Summary Contents For ST L6206 DMOS DUAL FULL BRIDGE DRIVER Data Sheet User Manual

Page 1 DMOS DUAL FULL BRIDGE DRIVER OPERATING SUPPLY VOLTAGE FROM 8 TO 52V 5.6A OUTPUT PEAK CURRENT (2.8A DC) RDS(ON) 0.3Ω TYP. VALUE @ Tj = 25 °C OPERATING FREQUENCY UP TO 100KHz PROGRAMMABLE HIGH SIDE OVER...

Page 2 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Test conditions Value Unit VS Supply Voltage VSA = VSB = VS VOD Differential Voltage between VSA = VSB = VS = 60V; VSA, OUT1A, OUT2A, SENSEA and VSENSEA = VSE...

Page 3 THERMAL DATA Symbol Description Power DIP24 SO24 Power SO36 Unit Rth-j-pins Maximum Thermal Resistance Junction-Pins °C/W Rth-j-case Maximum Thermal Resistance Junction-Case °C/W Rth-j-amb1 °C/W Maxim...

Page 4 PIN DESCRIPTION PACKAGE Power SO36 Name Type Function SO24/ Power DIP24 PIN # PIN # IN1A Logic input Bridge A Logic Input 1. IN2A Logic input Bridge A Logic Input 2. SENSEA Power Supply Bridge A Sourc...

Page 5 PIN DESCRIPTION (continued) PACKAGE Power SO36 Name Type Function SO24/ Power DIP24 PIN # PIN # VCP Output Charge Pump Oscillator Output. ENA Logic Input Bridge A Enable. LOW logic level switches OFF ...

Page 6 ELECTRICAL CHARACTERISTICS (continued) (Tamb = 25 °C, Vs = 48V, unless otherwise specified) Symbol Parameter Test Conditions Min Typ Max Unit IIH High Level Logic Input Current 7V Logic Input Voltage ...

Page 7 Figure 1. Switching Characteristic Definition Vth(ON) Vth(OFF) 10% D01IN1316 t FALL t RISE t D(OFF)EN t D(ON)EN Figure 2. Overcurrent Detection Timing Definition OCD Threshold D01IN1222 t OCD(OFF)t OC...

Page 8 CIRCUIT DESCRIPTION these pins. Two configurations are shown in Fig. 5 and Fig. 6. If driven by an open drain (collector) struc- POWER STAGES and CHARGE PUMP ture, a pull-up resistor REN and a capacit...

Page 9 NON-DISSIPATIVE OVERCURRENT DETECTION AND PROTECTION In addition to the PWM current control, an overcurrent detection circuit (OCD) is integrated. This circuit can be used to provides protection again...

Page 10 Figure 7. Overcurrent Protection Simplified Schematic OUT1A OUT2A VSA POWER SENSE HIGH SIDE DMOSs OF 1 cell THE BRIDGE A POWER SENSE POWER DMOS 1 cell POWER DMOS µC or LOGIC TO GATE n cells n cells LO...

Page 11 Figure 9. Output Current Protection Threshold versus RCL Value [µ s] 4.5 IS I SOVER [A] R CL [ Ω Figure 10. t DISABLE versus CEN and REN (VDD = 5V).

Page 12 Figure 11. t DELAY versus CEN (VDD = 5V). td el ay s] Cen [n F] THERMAL PROTECTION In addition to the Ovecurrent Detection, the L6206 integrates a Thermal Protection for preventing the device destruct...

Page 13 APPLICATION INFORMATION A typical application using L6206 is shown in Fig. 12. Typical component values for the application are shown in Table 2. A high quality ceramic capacitor in the range of 100 t...

Page 14 PARALLELED OPERATION The outputs of the L6206 can be paralleled to increase the output current capability or reduce the power dissi- pation in the device at a given current level. It must be noted, ho...

Page 15 To operate the device in parallel and maintain a lower over current threshold, Half Bridge 1 and the Half Bridge 2 of the Bridge A can be connected in parallel and the same done for the Bridge B as sh...

Page 16 It is also possible to parallel the four Half Bridges to obtain a simple Half Bridge as shown in Fig. 15. In this configuration the, the over current threshold is equal to twice the minimum threshold ...

Page 17 OUTPUT CURRENT CAPABILITY AND IC POWER DISSIPATION In Fig. 16 and Fig. 17 are shown the approximate relation between the output current and the IC power dissipa- tion using PWM current control driving...

Page 18 Figure 18. Mounting the Power SO package. Slug soldered Slug soldered Slug soldered to PCB with to PCB with to PCB with dissipating area plus ground layer dissipating area dissipating area contacted t...

Page 19 Figure 22. Typical Quiescent Current vs. Figure 25. Typical High-Side RDS(ON) vs. Supply Voltage Supply Voltage Iq [m A] RDS(ON) [Ω] fsw = 1k Hz Tj = 25°C 0.380 0.376 Tj = 85°C Tj = 25°C Tj = 125°C VS...

Page 20 mm inch MIN. TYP. MAX. MIN. TYP. MAX. OUTLINE AND 3.60 0.141 MECHANICAL DATA 10°(max.) °(max.) Power SO36 (1): "D" and "E1" do not include mold flash or protrusions - Mold flash or...

Page 21 mm inch DIM. OUTLINE AND MIN. TYP. MAX. MIN. TYP. MAX. MECHANICAL DATA Powerdip 24 ̊min, 15 ̊max. SDIP24L

Page 22 mm inch DIM. OUTLINE AND MIN. TYP. MAX. MIN. TYP. MAX. MECHANICAL DATA Weight: 0.60gr 0˚ (min.), 8˚ (max.) ddd 0.10 0.004 (1) “D” dimension does not include mold flash, protusions or gate SO24 burrs. ...

Page 23 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents...

Manual Details

Brand	Dual
Pages	23
File Size	413.78 KB
Published	May 20, 2026

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Frequently Asked Questions

What is the acceptable operating supply voltage range?

The L6206 operates using a supply voltage ranging from 8V to 52V.

How does the device handle overcurrent events?

Overcurrent detection occurs via an open drain OCD pin, which pulls low when excess current or thermal protection is triggered.

What motors are designed for this driver?

The L6206 is specifically designed for DC motor control applications and realizing dual/quad bridges.

What is the maximum specified switching frequency?

The device supports an operating frequency up to 100KHz, with a recommended RMS output current of 2.8A.