L6206PD datasheet(19/29 Pages) STMICROELECTRONICS

19 / 29 page

DocID07617 Rev 4

19/29

L6206

Application information

To operate the device in parallel and maintain a lower overcurrent 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 shown in Figure 16. In this configuration, the peak current for each half-bridge is

still limited by the bond wires for the supply and sense pins so the dissipation in the device

will be reduced, but the peak current rating is not increased.

When connected in this configuration the overcurrent detection circuit, senses the sum of

the current in upper devices connected in parallel. With the enables connected in parallel,

an overcurrent will turn of both bridges. Since the circuit senses the total current in the upper

devices, the overcurrent threshold is equal to the threshold set the resistor RCLA or RCLB in

Figure 16. RCLA sets the threshold when outputs OUT1A and OUT2A are high and resistor

RCLB sets the threshold when outputs OUT1B and OUT2B are high.

It is recommended to use RCLA = RCLB.

In this configuration, the resulting bridge has the following characteristics:



Equivalent device: full bridge



RDS(ON) 0.15  typ. value at TJ = 25 °C



2.8 A max. RMS load current



5.6 A max. OCD threshold

Figure 16. Parallel connection with lower overcurrent threshold

(with reference to 24-pin packages)

L6206PD Fiches technique(PDF) 19 Page - STMicroelectronics