Is there a suitable chip/solution for converting 24V to positive and negative 15V?

向阳xl

Is there a suitable chip/solution for converting 24V to positive and negative 15V? [Copy link]

1. Requirements: 24V to +/- 15V chip/solution, load capacity of about 0.5A, maximum input voltage 60V

2. Origin of the problem: The 24V battery is the power supply, and I want to directly convert it into positive and negative 15V to power the op amp, so it does not require a particularly large load capacity.

Taking into account the voltage fluctuations and possible surges of the power supply, it is better for the chip to withstand a voltage greater than 60V.

What I want is a chip that can output positive and negative 15V in one step, but I haven't found a suitable solution.

3. Existing solution: Can we only use two chips to obtain 15V and -15V separately?

TI's tps65131 can output positive and negative 15V, but its input is 2.7V to 5.5V.

qwqwqw2088

24V directly convert to +-15V

Can be used with 7815, 7915

Or you can step down the voltage from 24V to -15V using MAX774

qwqwqw2088

The current is not large and can also be achieved by 34063

whuer

Using FLYBUCK topology can achieve the goal in one step