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TPS2H160-Q1: I am looking for a solution to control solenoid valve.

WONJU LEE
Prodigy 20 points
Part Number: TPS2H160-Q1
Other Parts Discussed in Thread: TPS1HC100-Q1,

Hi TI team

I am looking for a solution to replace the IC(TLE6288)

Can you suggest a solution?

I think I can make up a combination of TPS2H160 + discrete circuits. 

I need a solution proposal of discrete circuits and Driver IC. 

 

<Design requirements>

1. Fast decay and slow decay

2. Peak and hold current 

3. 12 voltage system (VIN  operating voltage 9~16V, Load dump 40V)

4. ambient temperature  -40~105 ︒C

5. Peak current (I pk): 1.8A

6. hold current(I hd) : 1A 

7. hold off time(Tfo) : 300 usec

8. load : Solenoid valve 

9. when solenoid is off, Fast decay is needed. (clamping voltage is not fixed. This value can be suggested.

10. High side control. 

10. below picture is my solenoid current pulse

 green : current 

yellow : output voltage 

 

11. It`s the structure than i think of. 

please review it . Thanks~

  • 0
    TI__Mastermind 34905 points

    Hello Wonju,

    Welcome to E2E!

    Does the high-side switch have to be two channels? The TPS2H160-Q1 would work in this application, however the TPS1HC100-Q1 (one channel) would be a better fit as far as rated load current and has better supply/availability. All of our high-side switches have integrated VDS clamps that would dissipate the inductive energy on a turn-off event.

    This would limit the output voltage to the battery voltage - clamp voltage (clamp voltage is 35V-43V on TPS1HC100-Q1):

    Question: Do you know how much inductance is on the solenoid for the load?

    For reference, I have also attached a good presentation from TI about driving inductive loads with TI high side switches that you might find useful.

    5873.2019_FAE summit_Driving inductive loads using power switches _cameron.pptx

    Timothy Logan
    Applications Manager - Power Switches