Features

Four gate drives of the external N channel power supply

MOSFET with high -side configuration:

- door driven by PWM output signal

[123 [123 ] - adjustable grid pole charging current

- Limited grid to source voltage

-The negative clamp holding of the inductive load

- Advanced runoff control

-Installash adjustment power

plug

The control output of the external relay driver

Battery voltage compatible dual -line interface

Power voltage monitoring, shutdown, shutdown.

Battery voltage monitoring, shutdown

Connect temperature monitoring

Close

Direction monitoring through electric heating plugs

over -current stop (can Turning threshold)

External switch monitoring

Charging pump voltage monitoring

Turn off

During uninstallation period, actively clamp it

Instructions

L9524C is a control IC with a maximum of 6 diesel engine plugs. Electric congestion is a switch -controlled N -channel power MOSFET or a single relay input high -end configuration by up to four external PWM control. The power supply voltage, battery voltage, connecting temperature, switch, is monitored by the voltage of the light current plug and charging pump. Two -line interfaces are used to manage the system with diesel engines.

Electric characteristics

5V ≤VVS; VBAT ≤ 18V, -40 ° C ≤TJ≤125 ° C, unless there are other regulations. When the voltage is flowing into the pins, the current assumes that the current is positive.

1. Unexpectedly, design guarantee

2. Time constant of digital creation, through the scanning path Test verification

Work mode

L9524C can work in 6 modes. By the appropriate pins and voltage as shown in the following table:

Mode 1 and 2 for relay use (called ""relay mode""), mode 3 to 6 Used for transistor (referred to as ""transistor mode""). In the relay mode, the protocol of the diagnostic interface (DO pin) can be selected from the Go/No GO protocol and serial protocol (the agreement is described in the ""diagnostic output"" section). In the transistor mode, the protocol of the diagnostic interface is a serial protocol. It can distinguish the use of the shunting device to monitor the current through the electric plug (called ""diversion influenza"") or useThe RDS (ON) of the Power MOSFET itself (called ""Crystal Tube Sensing""). In the divertal influenza, the resistance of the shunt is to assume that in the transistor sensing mode, the temperature is the constant assumption of the RDS (on) of the constant assumption of power MOSFET with temperature and therefore, so the current monitoring is appropriately adjusted. In the transistor mode, there are two methods that can control the output timing. In mode 3 and 5, PWM controls the timing of the input signal of the PWM signal to the external power MOSFET (""No Power Adjustment"") of the PWM signal. In the mode 4 and 6, the PWM control input signal determines the power of the PWM signal applied to the external power MOSFET through the power of the power of the power of the power of the power of the power. Essence

Supply

L9524C's main power quotes are VS pins. The voltage (VVS) applied to it is monitoring

If you are lower than the VVS UV under the TVS Fil (""under voltage"") At least TVS FIL (""Overvoltage"") is greater than VVS OV, then turn off all electrical plugs failing ""),

If the electric heating is greater than VVS LD, at least open TVS LD ("" ""During the active clamping period""), [) 123]

If it is less than VVS OL, ignore the opening load failure.

Note: If the corresponding opening conditions disappear, the electric congestion will be turned on again, unless the electrical plug is turned on because of the uninstallation. Then they kept switching and turned on until VVS was less than VVS OV (for at least TVS FIL). In mode 2 to 6, L9524C is powered by BAT pin. This auxiliary power supply ensures that the external power supply MOSFET is available on the VS pin without the voltage of the main power supply. The BAT pin is also used to detect the battery voltage VBAT in order to perform the power adjustment mode 4 and 6 (see the ""Power Adjustment"" section) and the detection of ""battery under pressure failure (the fuse between the battery and the module is defective). VBAT is at least lower than the TBAT FIL from 2 to 6 under the VBAT UV mode. The additional power supply voltage higher than the main power supply voltage is charged from the charge pump to the external storage capacitor connected to the CP pin. This capacitor is mainly an external N -channel power MOSFET. Gallery power supply monitoring pump voltage VCP, if it is lower than VCP UV, turn off the electric plug for at least TCP Fil (""charge pump voltage""). After that, the electric heating plug is maintained. They clearly open through the CI (control input) pins again.

Control input

Control input (CI) pins are pulled on RCI to power voltage VVS in order to VCI u003d VCI is turned off, and the electric heating is closed by default. L9524C is converted from VCI from VCI to VCI to open (decrease edge), and vice versa (rising edge). Voltage ignores VCI level changes shorter than TCI-FIL. In the transistor mode (mode 3 to 6), the L9524C expects a PWM signal at the CI pin. Each decrease is measured at the start time TCI (until the next rising edge time, that is, the length of the length of the time) and its cycle TCI (time to the next decrease edge). The end of the pulse group is that if there is no decrease in a time over TCI to, and the electric heating is closed. Therefore, it is impossible to use an electrical congestion to permanently turn on the exception of electric heating: If the low voltage level of the first lower edge is greater than the VCI that is greater than the electric congestion, as long as this low pulse continues, it will be connected.

Although in Mode 2 (relay mode, serial diagnostic interface protocol), relay should be permanently switched L9524C also hopes that there is a PWM signal on the CI pin, Because the serial diagnostic interface protocol is synchronized by the decrease of the CI signal (see ""Diagnosis Output"" in Section). If the shutdown time (in the output of the relay, the rising and decrease of the PWM signal) is less than the pulse that is shorter than the TIO-SUP (see the ""relay output"" section). For the same reason, if the PWM signal is smaller than the TIO SUP. In all other circumstances, the relay is based on the PWM signal at the CI pin.

In Mode 1 (relay mode, through the/without diagnostic interface protocol), no need to pass/not pass the agreement. Therefore, if VCI u003d VCI is turned on and the relay is turned off, the relay is connected if VCI u003d VCI is turned off

Diagnostic output

L9524C (DO pin) diagnostic output level consists of a current limit low -voltage side composition The switch and a pull -up resistor RDO to the VS pin. The voltage level of the logic low signal VDOL is given VVS by voltage drop and the voltage level of the logic high signal from the low voltage side switch and the voltage of the logic high signal. L9524C can detect the following faults (see ""Power Supply"