6W Transient Suppression DC DC Converters

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Output Voltage (V) : 5V,12V,15V
Input DC Voltage (V) : 15V-50V
Max. Output Power (W) : 6W

Product Detail

1 Features of HSSA28D Series Transient Suppression DC/ DC Converters

High reliability
Wide Range input voltage：15V～50V，Nominal DC input voltage:28V
Maximum input transient voltage：80V，1s
Output Power PO：6W
Operating temperature range Tc：-55℃～+125℃
Low Startup current
No output overshoot
Inhibit function
Inhibit function and indefinite short circuit protection
maximum power density：19W/in3
Hermetically sealed metal cases

2. Scope of application of HSSA28D Series Transient Suppression DC DC Converters

High-reliability electronic system for aviation and aerospace, etc.

3. Description of HSSA28D Series Transient Suppression DC DC Converters

The HSSA28D series transient suppression DC DC converter is high reliable and featured with transient protection (80v,1s) for DC DC converter. Single ended flyback, pulse width modulated and transformer magnetic feedback topology design are used in the HSSA28D series transient suppression DC DC converter. The operating principle of the HSSA28D series transient suppression DC DC converter is that the sampling signal of output voltage, coupled by the opto-coupler, works together with the sampling signal of input loop current to regulate the pulse width of the controller. The double loop control creates constant voltage output thick film hybrid techniques provides the HSSA28D series transient suppression DC DC converter with high reliability and optimum miniaturization. The design and manufacturing process of the HSSA28D series transient suppression DC DC converter are in compliance with MIL-PRF-38534.

4.Electrical performance of HSSA28D Series Transient Suppression DC DC Converters

Tabel 2 Rated conditions and recommended operating conditions.

Absolute Max. Rated value

Input voltage：15V～50V

Input voltage（Transient,1s）：80V

Output Power：6.5W

Storage temperature：-65℃～150℃

Mechanical Shock：1500g

Weight（Non-flanged/Flanged）：19g/24g

The intensity of antistatic：2000V

Table 3 Electric characteristics

No.	Parameter	Conditions		HSSA28D5 HSSA28D5F		HSSA28D12 HSSA28D12F		HSSA28D15 HSSA28D15F
				Q/HW32168-2013		Q/HW32169-2013		Q/HW32170-2013
				Min	Max	Min	Max	Min	Max
1	Input Voltage/V	Low、High、Ambient Temperature		15	50	15	50	15	50
2	Output Voltage/V	Positive	Ambient Full load	4.95	5.05	11.88	12.12	14.85	15.15
		Negative	Ambient Full load	4.95	5.05	11.88	12.12	14.85	15.15
		Positive	Low/high Full load	4.925	5.075	11.82	12.18	14.775	15.225
		Negative	Low/high Full load	4.925	5.075	11.82	12.18	14.775	15.225
3	Output current/A	VIN=15V～50V		―	0.5	―	0.25	―	0.2
4	Output Power/W			0	5	0	6	0	6
5	Output Ripple Voltage/mV	BW≤6MHz，Io=Full load		―	50	―	50	―	50
6	Line Regulation/mV	Positive	VIN=16V～40V，Io=Full	―	50	―	50	―	50
6	Line Regulation/mV	Negative	VIN=16V～40V，Io=Full	―	50	―	50	―	50
7	Lode Regulation/mV	Positive	Io=No load tofull	―	50	―	50	―	50
7	Lode Regulation/mV	Negative	Io=No load tofull	―	50	―	50	―	50
8	Input current/mA	Inhibited		―	6	―	6	―	6
8	Input current/mA	Io=no load		―	60	―	60	―	60
9	Input Ripple current/mA	BW≤20MHz，Io=Full load		―	50	―	50	―	50
10	Efficiency/%	Io=Full load		66	―	72	―	73	―
11	Isolation/MΩ	Input to output or any pin to case(except pin 7、8)at 500V，Tc=25℃		100	―	100	―	100	―
12	Inhibit Function			0	0.7	0	0.7	0	0.7
13	Under voltage open voltage/V	Io=Full Load		12.0	14.8	12.0	14.8	12	14.8
14	Under voltage cut-off voltage/V	Io=Full Load		11.0	14.5	11.0	14.5	11	14.5
15	Short Circuit Protection
16	Capacitive load/μF	Tc=25℃		―	500	―	500	―	500
17	switching frequency/kHz	Io=Full Load		350	500	350	500	350	500
18	Cross Regulation/mV	One road 30% load, The other Load 30%→70%		―	450	―	450	―	450
19	Step Load Response Transient(mV pK)	50%load→full load or Full load→50% load		―	300	―	300	―	300
20	Step Load Response Recovery(μs)	50%load→full load or Full load→50% load		―	400	―	450	―	500
21	Step Line Response Transient(mV pK)	VIN：16V→40V， VIN：40V→16V，Io=Full load		―	900	―	900	―	900
22	Step Line Response Recovery(μs)	VIN：16V→40V VIN：40V→16V Io=Full load		―	700	―	500	―	500
23	Start-up Overshoot(mV pK)	VIN：0→28V， Io=Full load		―	25	―	50	―	50
24	Start-up Delay (ms)	VIN：0→28V， Io=Full load		―	20	―	20	―	20

5. Circuit block diagram of HSSA28D Series Transient Suppression DC DC Converters

Figure 1 the HSSA28D series transient suppression DC DC converter block diagram

6.Typical Performance Curves(Testing condition as per Tc=25℃，VIN=28V±5%,unless otherwise specified) of HSSA28D Series Transient Suppression DC DC Converters

Figure 2 HSSA28D15 Efficiency

Figure 3 HSSA28D15 step line response

Figure 4 HSSA28D15 Step Load Response

Figure 5 HSSA28D15 Start-up Overshoot/Start-up Delay

7.MTBF Curves of HSSA28D Series Transient Suppression DC DC Converters

Figure 6 MTBF Temperature Curves（HSSA28D15）

8. Pin Designation of HSSA28D Series Transient Suppression DC DC Converters

Figure 7 Pin Out Bottom View

Table 4 Pin Designation

Pin	Symbol	Designation
1	VO+	Positive Output
2	GNDO	Output Common
3	VO-	Negative Output
4	NC	NULL
5	INH	Inhibit
6	VIN	Positive Input
7	GNDI	Input Common
8	GNDC	Case Ground

9. Typical Connection Diagram of HSSA28D Series Transient Suppression DC DC Converters

Figure 8 Product Connection Diagram

Figure 9 EMI Filter Connection Diagram

Figure 10 Inhibit Diver Diagram

10．Package Specifications (Unit: mm) of HSSA28D Series Transient Suppression DC DC Converters

① Package without flanged


Figure 11 Bottom View	Figure 12 Side View

② Package with Flanged


Figure 13 Bottom View	Figure 14 Side View

Table 5 Package Outline

Dimension Symbols	Unit/mm
Dimension Symbols	Minimum	Nominal	Maximum
A	-	6.86	7.16
Φb	0.51	0.64	0.77
D	-	27.23	27.57
E	-	27.23	27.57
e	-	5.08	-
e1	-	20.32	-
e2	-	10.16	-
L	4.95	5.21	-
ΦP	2.50	2.80	3.10
X1	-	39.0	39.50
X2	32.90	33.20	33.50

Table 6 Case Materials

Case Model

Header

Header Plating

Cover

Cover Plating

Pin Plating

Sealing Style

Notes

UPP2727-08a

（Non-Flanged）

Cold Rolled Steel（10#）

Nickel

Kovar

(4J42)

Nickel

Copper –coreCompound

Ni/Au

Compression Seal

Nickel Plating is for case ground pin

UPP2727-08u

（Flanged）

Cold Rolled Steel（10#）

Nickel

Kovar

(4J42)

Nickel

Copper –coreCompound

Ni/Au

Compression Seal

Nickel Plating is for case ground pin

11. Ordering Information of HSSA28D Series Transient Suppression DC DC Converters

Figure 15 Part Numbering Key

Application Notes:

Both positive and negative terminals for power supply shall be correctly connected when power is applied so as to avoid permanent damage to the device.
Testing position shall be the root of the pin of the device when the electrical characteristic is measured.
The baseplate of the device shall be closely attached to the circuit board during device mounting so as to avoid the damage on pins. The shockproof actions shall be adopted when necessary.
Pins shall not be bended to avoid the glass insulator cracking and case leaking.
Pins at inhibit terminal shall be hung in the air during no operation.
When ordering this device，the detail electrical specification shall be based on relevant standards. While data offered in this document shall be for reference only.

Tags : Thick FilmTransient Suppression DC DC Converters 15V-50V Input voltage Transient Protection DC DC Converters 5V-15VOutput voltage Transient Suppression DC DC Converters

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Product Detail

1 Features of HSSA28D Series Transient Suppression DC/ DC Converters

2. Scope of application of HSSA28D Series Transient Suppression DC DC Converters

3. Description of HSSA28D Series Transient Suppression DC DC Converters

4.Electrical performance of HSSA28D Series Transient Suppression DC DC Converters

5. Circuit block diagram of HSSA28D Series Transient Suppression DC DC Converters

6.Typical Performance Curves(Testing condition as per Tc=25℃，VIN=28V±5%,unless otherwise specified) of HSSA28D Series Transient Suppression DC DC Converters

Figure 3 HSSA28D15 step line response

7.MTBF Curves of HSSA28D Series Transient Suppression DC DC Converters

8. Pin Designation of HSSA28D Series Transient Suppression DC DC Converters

9. Typical Connection Diagram of HSSA28D Series Transient Suppression DC DC Converters

10．Package Specifications (Unit: mm) of HSSA28D Series Transient Suppression DC DC Converters

11. Ordering Information of HSSA28D Series Transient Suppression DC DC Converters

Application Notes:

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