L9390 Twelve channel valve driver

The L9390 is a twelve output low side valve driver designed for use in an ABS/ESP vehicle system. All outputs are PWM configurable, while six out of twelve are current regulated. Each of the twelve outputs is open drain configured and has a built-in 35V clamp. Eight of the twelve have integrated active freewheeling diodes for active rectification of the PWM controlled load.

In order to minimize electromagnetic emissions during load actuation, the possibility to control output slopes is provided.

Two separate communication interfaces are present: the SPI port is primarily designated to provide diagnostics and secondary control. The serial High End Timer Interface (HET) provides the primary output control functions from on/off switching to current level control commands.

Diagnostic includes over current protection, under current detection, open load detection, loss of ground detection, loss of freewheeling diode, and over temperature detection, output integrity check, SVDT, leakage current test, PWM integrity and functionality check, valve resistance sense check, loss of freewheeling diode detection and more.

Power supply monitoring is also included.

技术特性

Four low side switched output drivers with 0.1Ω Rds,ON at 25°C
- Possibly configurable as PWM controlled adding external freewheeling diodes
Two low side PWM controlled output drivers with 0.1Ω Rds,ON at 25°C and integrated active freewheeling diodes
Six low side current controlled output drivers with 0.16Ω Rds,ON at 25°C and integrated active freewheeling diodes
- Current accuracy:
  - 10% (Iload < 800mA)
  - 6% (Iload > 800mA)
All outputs with integrated 35V zener clamp
Five pin SPI port (four standard pins plus additional SPI enable input pin)
Six serial high speed input for output control
High level diagnostic, including Silent Valve Driver Test
Direct disable of outputs with an external pin
Programmable jitter frequency of PWM and current controlled outputs
TQFP100 exposed pad package

功能框图

L9390 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
L9390	Preview		1000	TQFP 100 14x14x1.0	Tray		L9390

DATA BRIEF

描述	版本	大小
L9390 : Twelve channel valve driver	1	139KB