UM0547 Datasheet, PDF (5/13 Pages) STMicroelectronics – evaluation board for ABS valve drivers system

UM0547
2
Evaluation board description
Evaluation board description
The PTB801DC is a valve drivers board for ABS system based on STMicroelectronics
devices. The board implements a flexible and open design demonstrating the capability of
the STMicroelectronics for ABS applications. The PTB801DC mounts two L9349 devices,
the control coming from UN24 mother board.
The board has opened connectivity to external valves.
2.1
2.1.1
Features
General features of this board are:
● Full evaluation and development system based on the system basis chip L9349
● Full system evaluation: integration, basic and safety functions
L9349 quad intelligent power low-side switch
The L9349 is a monolithic integrated quad low side driver realized in an advanced
BCDmultipower mixed technology. The device is intended to drive valves in automotive
environment.
Figure 1. L9349 pin connection (top view)
Heat sink connected
to pins 1, 10, 11, 20
PGND 1
OUT1 2
D1 3
IN4 4
VS 5
NC 6
IN3 7
D2 8
OUT2 9
PGND 10
20 PGND
19 OUT4
18 D4
17 IN1
16 EN
15 GND
14 IN2
13 D3
12 OUT3
11 PGND
00AT0026
The L9349 is a quad low-side driver with following functions:
● Quad power low side driver with 2 x 5 A and 2 x 3 A output current capability
● Low R_DSON typically 200 mand 300 m@ T_j = 25 °C
● Internal output clamping structures with VFB = 50V for fast inductive load current
recirculation
● Limited output voltage slew rate for low EMI
● Protected µP compatible enable and input
● Wide operating supply voltage range 4.5 V to 32 V
Doc ID 14682 Rev 2
5/13