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HTB28XXS

(185°C, 28V Input, Single Output)

5. Under Voltage Lock Out Protection:

A minimum voltage is required at the input of the converter to initiate operation. This voltage is set to 14.5V

± 0.5V. To preclude the possibility of noise or other variations at the input falsely initiating and halting

converter operation, a hysteresis of approximately 1.0V is incorporated in this circuit. Thus if the input

voltage droops to 12.5V ± 0.5V, the converter will shut down and remain inoperative until the input voltage

returns to

6. Lay-out and Connection of the HTB Converter:

It is recommended to connect the HTB converter to the input power and to the load with as short wires as

possible for best results. It is recommended that TEFLON coated stranded copper wires of correct AWG

gauge be employed to meet current capacity and insulation requirements at high temperatures. Input

Positive and Return wires can be twisted and likewise output Positive and Return wires can be twisted. If

shielded wires are employed, shields can be connected to input return for input wires. Likewise, shield can

be connected to output return for connections to load. As explained above, the case of the HTB converter

can be grounded/earthed.

For noisy input power, it is recommended that an input EMI filter, comprising common mode and differential

mode inductors be placed ahead of the HTB converter. These external inductors combined with the internal

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