Output current of each channel and pull up for open load detection (VNQ7E100AJ)

[shravanthi]

Hi,

I'm working with this VNQ7E100AJTR IC , I have a connected the solenoid of rating 2.2A rating at one output channel. the particular output pin got damaged and irrespective of the input the particular output pin is always High (12V). what is the maximum output current of the IC at each output channel? what the recommended output current maximum to be connected at the Output(OUTPUT0)?

 1.I wanted to know whether this IC will work if PWM input is given at the INPUT0-3 in VNQ7E100AJTR IC and will the Output of this IC will be PWM or not ?

2. what is the max output current of this IC for each output Pin (4 channel).Is the output current of each channel 2A or less?

3.For OFF-state open-load with external circuitry,

4.For RPU , the value of IL(off2)min @ 4V is 3uA ?

Kindly do the needful as soon as possible

Regards.

[Peter BENSCH]

1. But of course you can also switch PWM with each of the four channels – however, you must take into account the switching times, which you can find in the data sheet, table 7: Switching.
   If I roughly assume your 12V, and also the maximum voltage slope of 0.7V/µs for the worst case, you get a switching time per slope of about 12V/(0.7V/µs) = 17µs. The narrowest pulse can therefore last a minimum of ~34µs. Now we need to calculate the PWM frequency, which depends on the PWM resolution. Let's assume you want to work with 8-bit resolution = 256 PWM levels, then you get 256*34µS = 8704µs, which corresponds to ~115Hz – maximum frequency. At higher resolutions, the frequency decreases accordingly. However, I'm afraid that this doesn't quite match your expectations of PWM?
2. The maximum output current is monitored and limited internally, but you can assume the 2A/channel mentioned in the data sheet.
3. Your point 3 is not a question, but a heading from the data sheet, section 4.4.2, which also includes your point 4.
4. The equation in section 4.4.2 does not mention IL(off), but IL(off2) min. Unfortunately, I also don't know what the automotive guys were thinking with ‘@ 4V’, as table 10 under ‘OFF-state diagnostic’ specifies IL(off2) min as 100µA at VOUT=VOL.

Regards
/Peter