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33W Miltary Point of Load DC to DC Converters (POL)

  • Item NO.:

    HNTF5S
  • Max. Output Power (W):

    33W
  • Input DC Voltage (V):

    4.5V-5.5V
  • Output Voltage (V):

    1.5V,1.8V,3.3V
  • Product Detail

1 Features of HNTF5S Series Military Point of Load DC/DC Converters (POL)

High reliability
Low input voltage range:4.5V~5.5V,Nominal DC input voltage: 5V
High transfer efficiency 
Output Power PO:33W
Operating temperature range Tc:-55℃~+125℃ 
Low Startup current 
No output overshoot
Inhibit function
Input under voltage locked function and output short circuit protection
Maximum power density:19W/in3
Hermetically sealed metal case

2. Scope of application of HNTF5S Series Military Point of Load DC to DC Converters (POL)

High-reliability electronic system for ground, vehicle-mounted, radar, aviation and aerospace, etc

3.  Description of HNTF5S Series Military Point of Load DC to DC Converters (POL)

This series product is a high reliability and adjustable non-isolated DC to DC Converter. Products adopt buck circuit topology and pulse width modulation principle, the output voltage feeds back the pulse width of modulation controller through directly sampling, achieves the closed loop control, to meet the requirements of a stable voltage output.
Thick film hybrid techniques provide the HNTF5S Series of converters with high reliability and optimum miniaturization. The design and manufacturing process of HNTF5S Series of converters are in compliance with MIL-PRF-38534 and detailed specifications.

4.Technical Specifications of HNTF5S Series Military Point of Load DC to DC Converters (POL)

Table  2  Rated conditions and recommended operating conditions

Absolute Max. Rating

Input voltage:4.5V~5.5V

Input voltage(Transient,1s):6V

Output Power:36.3W

Storage temperature:-65℃~150℃

Mechanical Shock:1500g

Lead resistance welding temperature:300℃(15s)

Weight(without flange/ with flange):31g/34g



Table 3 Electrical characteristics

No.

Items

Conditions

HNTF5S3R3

HNTF5S3R3F

Min

Max

1

Input Voltage/V

Low,High,Ambient Temperature

4.5

5.5

2

Output Voltage/V

IO=full load

Ambient

3.1

3.5

Low/high

2.9

3.7

3

Output current/A

VIN=4.5V~5.5V

10

4

Output Power/W


0

33

5

Output Ripple Voltage/mV

BW=6MHz,IO=full load

35

6

Line Regulation/mV

VIN=4.5V~5.5V,IO=full load

Ambient

30

Low/high

80

7

Line Regulation/mV

0→full load

Ambient

50

Low/high

100

8

Efficiency/%

Io=Full

load

Ambient

88

Low/high

86

9

Isolation/MΩ

TA=25℃,500V between pin and package

100

10

Inhibitcut-off Voltage/V

IO=full load

0

0.2

11

Start-up Overshoot(mV pK)

VIN:0→5V,IO=full load

500

12

Start-up Delay (ms)

VIN:0→5V,IO=full load

100

5.Circuit block diagram of HNTF5S Series Military Point of Load DC to DC Converters (POL)


Fig. 1 HNTF5S3R3 Series circuit block diagram

6.Typical Characteristic Curve(Tc=25℃,VIN=5V±0.15V,VO=3.3V,IO=full load) of HNTF5S Series Military Point of Load DC to DC Converters (POL)



Fig. 2   HNTF5S3R3 Efficiency


Fig. 3   HNTF5S3R3 Step Line Response

Fig. 4   HNTF5S3R3 Step Load Response

7.MTBF Curve of HNTF5S Series Military Point of Load DC to DC Converters (POL)




Fig. 6    MTBF Temperature Curve(HNTF5S3R3)

8. Pin Designation of HNTF5S Series Military Point of Load DC to DC Converters (POL)



Fig 7    Pin Out Bottom View

Table 4 Pin Designation

Pin

Symbol

Designation

Pin

Symbol

Designation

1

INH

Inhibit

5

NC

No connection

2

V0

Output

6

GNDC

Case Ground

3

GND

Common

7

GND

Common

4

NC

No connection

8

VIN

Positive Input



9. Typical Connection Diagram of HNTF5S Series Military Point of Load DC to DC Converters (POL)



Fig. 8    Connection Diagram


Fig. 10   Inhibit Driver Circuit Diagram

10.Package Specifications (Unit: mm) of HNTF5S Series Military Point of Load DC to DC Converters (POL)

① Package without flange



Fig. 11  Bottom View

Fig. 12  Side View


② Package with Flange


Fig 13  Bottom View

Fig. 14  Side View


Table 5  Package Outline

Symbol

Unit/mm

Min

Nominal

Max

A

-

-

8.90

A1

1.20

1.50

1.80

φb

0.87

1.00

1.13

D

-

-

28.94

E

-

-

37.33

e

-

20.32

-

e1

-

5.21

-

e2

-

12.83

-

e3

-

17.91

-

e4


22.99


e5

-

28.07

-

X

-

-

51.30

X1

43.45

43.95

44.45

P

3.00

3.30

3.60

L

5.35

-

-


Table 6  Case Materials

Case Model

Header

Header Plating

Cover

Cover Plating

Pin

Pin Plating

Sealing

Notes

UPP3728-08b

Cold Rolled Steel(10#)

Nickel

Kovar

(4J42)

Nickel

Copper –core Compound

Au

Parallel seam


UPP3728-08e

Cold Rolled Steel(10#)

Nickel

Kovar

(4J42)

Nickel

Copper Compound

Au

Parallel seam



11. Ordering Information of HNTF5S Series Military Point of Load DC to DC Converters (POL)




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 pin bottom 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 cracking in the glass insulator 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.
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