Hv-nixie-dc-dc-switching-power-supply

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STD Hv-nixie-dc-dc-switching-power-supply

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Update time： 2021-04-11 22:41:27

Creation time： 2016-01-05 02:27:46

Description

Nixie tubes need about ~180Vdc to light up and thus on most devices a DC-DC converter is needed. We designed here a simple DC-DC switching regulator capable of powering most of Nixie tubes. **Description** The module is based on the MAX1771 Step-Up DC-DC Controller. This controller works up to 300kHz switching frequency and that allows the usage of miniature surface mount components. It accepts an input voltage from 2 to 16.5V and the output is factory configured to 12V. In this module the output voltage is configured higher at ~180Vdc using external resistors and a potentiometer. The MAX1771 is driving an external N-channel MOSFET and with the help of the inductor and a fast diode, high voltage is produced. MOSFET has to be low RDSon, Diode has to be fast Mttr, typically

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hv-nixie-dc-dc-switching-power-supply
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HV NIXIE DC-DC SWITCHING POWER SUPPLY
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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	MAX1771	U1	SOIC-8	1
2	100n	C1,C3	C1	2
3	100u	C2	C1	1
4	SIP2	P3,P2	HDR1X2	2
5	10k	R1	TRIM_POT_PTH	1
6	10k	R2	C0805	1
7	1M5	R3	C0805	1
8	4.7u,250V	C4	CP_8X13MM	1
9	100n,250V	C5	CP_8X13MM	1
10	IRF644	Q1	TO-220AB	1
11	ES2F	D1	DO35-7	1
12	4.7u/250V	C6	CP_8X13MM	1
13	1k	R4	R3	1
14	100uH/18A	L1	INDUCTOR-1206	1