Power modules - QDHF

Power modules – QDHF

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The QDHF power module family is described by the configuration-specific ratings in the following tables. DC/DC isolated conversion. Maximum output power: 30W. Input undervoltage protection. Refer to the selection table, pin assignments and application guidance for the selected configuration.

Input voltage (V)

Output voltage (V)

Output current (A)

Ratings apply to the selected configuration. See the datasheet for test conditions and model designation notes.

For multiple-output models, slash-separated ratings follow the output order in the source selection table.

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Description
Technical Data
Datasheet
OUTLINE
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Power modules - QDHF

DC/DC isolated conversion
Hermetically sealed steel case
Maximum output power: 30W
Input undervoltage protection
Output overcurrent, short-circuit protection
Single output available, dual output, triple output
Operating temperature (Tc): -55°C to 125°C
Storage temperature: -55°C to 125°C

Product Selection

Model	Input voltage (V)	Output voltage (V)	Output current (A)	Efficiency (%) Typical	Capacitive load (µF) max.	Ripple (mV) Typical
QDHF15-18S05FG	9 to 36	5.0	3.00	82	680	30
QDHF15-28S05SG	15 to 50	5.0	3.00	80	1000	25
QDHF15-28S12SG	15 to 50	12.0	1.25	84	470	35
QDHF20-18S05SG	9 to 36	5.0	4.00	80	470	35
QDHF20-28S05SG	15 to 50	5.0	4.00	80	470	35
QDHF20-28S06SG	15 to 50	6.0	3.33	84	470	35
QDHF20-28S12SG	15 to 50	12.0	1.67	84	470	35
QDHF20-28S15SG	15 to 50	15.0	1.33	84	330	35
QDHF20-28S28SG	15 to 50	28.0	0.72	88	220	70
QDHF20-28S40SG	15 to 50	40.0	0.50	87	100	110
QDHF25-28S05FG	15 to 50	5.0	5.00	80	330	35
QDHF30-28S40SG	16 to 40	40.0	0.75	88	100	80
QDHF20-28D05SG	15 to 50	±5.0	2	84	470	40
QDHF20-28D12SG	15 to 50	±12.0	0.83	83	220	40
QDHF20-28D15SG	15 to 50	±15.0	0.66	84	330	35
QDHF25-28D12FG	15 to 50	±12.0	1.05	86	330	50
QDHF25-28D15FG	15 to 50	±15.0	0.83	88	330	50
QDHF15-18T0512SG	9 to 36	5.0	1.50	83	470	45
QDHF15-18T0512SG	9 to 36	±12.0	0.32	83	220	80
QDHF15-18T0515SG	9 to 36	5.0	1.50	77	470	45
QDHF15-18T0515SG	9 to 36	±15.0	0.25	77	220	70
QDHF15-28T0515SG	15 to 50	5.0	1.50	78	470	45
QDHF15-28T0515SG	15 to 50	±15.0	0.25	78	220	70
QDHF15-28T0512SG	15 to 50	5.0	1.50	78	470	45
QDHF15-28T0512SG	15 to 50	±12.0	0.32	78	220	70
QDHF20-28T0515SG	16 to 40	5.0	2.00	78	470	45
QDHF20-28T0515SG	16 to 40	±15.0	0.33	78	220	70

Technical figure: File Utility Help, 10.0 V/div, Digital bus, Horizontal, 4.00 ms/div, Trigger, Acquire, Sample, Cursor, Measure, Search, Results, Ready — Technical figure · Datasheet page 8

Technical figure: File Utility Help, 20.0 mV/div, Digital bus, Horizontal, 10.0 ms/div, Trigger, Acquire, Sample, Cursor, Measure, Search, Results, Triggered — Technical figure · Datasheet page 8

Technical figure: Efficiency (%), 15V EFF. — Technical figure · Datasheet page 8

Application Guidelines — Technical figure · Datasheet page 8

Technical figure: Module, Screw, Insulator, PCB — Technical figure · Datasheet page 10

Technical Data — QDHF

Characteristic	Test temperature	Min.	Typ.	Max.	Unit	Conditions
Input voltage range	Room, High, Low	15	28	50	V	15V to 50V input-voltage series, see the product selection table
Input voltage range	Room, High, Low	9	28	36	V	9V to 36V input-voltage series, see the product selection table
Input voltage range	Room, High, Low	16	28	40	V	16V to 40V input-voltage series, see the product selection table
Input surge voltage	Room	—	—	80	V	15V to 50V input-voltage series, Vt=1s, full load
Input surge voltage	Room	—	—	50	V	9V to 36V, 16V to 40V input-voltage series, Vt=1s, full load
Line regulation	Room, High, Low	-1	—	+1	%VO	full input-voltage range, full load, triple-output models ±2%
Load regulation	Room, High, Low	-2	—	+2	%VO	full load range, balanced dual-output loading, triple-output models ±3%
Turn-on delay a	Room	—	5	—	ms	time from power-on until output voltage reaches 10% time
Output voltage rise time a	Room	—	2	—	ms	output voltage from 10% rises to 90% time
Enable turn-on delay a	Room	—	7	—	ms	time from enable assertion until output voltage reaches 10% time
Enable logic level (positive logic)	Room	-0.3	—	0.7	V	no output, see the application guide for control methods
Enable logic level (positive logic)	Room	3.5	—	5.0	V	output enabled when open or high, see the application guide for control methods
Input undervoltage protection	Room	11.0	—	14.8	V	half load, 15V to 50V, 16V to 40V input-voltage series
Input undervoltage protection	Room	6.0	—	8.8	V	half load, 9V to 36V input-voltage series
Output overcurrent protection	Room	110	—	—	%IO	hiccup mode, automatic recovery after overcurrent removal
Output short-circuit protection	Room	—				hiccup mode, automatic recovery after removal of the short circuit, Triple-output models do not provide output short-circuit protection.
Insulation resistance	Room	100	—	—	MΩ	500Vdc, input, output, between each pair of terminals and case
Switching frequency	Room	300	—	500	kHz
Weight	Room	27	30	33	g	without flange A, B case type
Weight	Room	30	33	36	g	with flange A, B case type

Note: 1, for other package types or temperature-screening grades, use the corresponding model designation rules when ordering, contact technical support for details; 2, electrical data and mechanical dimensions in this manual are for product selection reference, the detailed product specification governs the final requirements; 3, see the typical application circuit for the ripple measurement method.