33W Non-isolated Point of Load DC to DC Converters (POL)

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Output Voltage (V) : 0.8V-3.3V
Input DC Voltage (V) : 4.5V～5.5V
Max. Output Power (W) : 33W

Product Detail

1 Features of HNTA0510S Non-isolated Point of Load DC/DC Converters (POL)

High reliability
Low voltage input：4.5V～5.5V，Typical 5V
High conversion efficiency
Output Power PO：33W
Operating temperature Tc：-55℃～+125℃
Low start-up current
No output overshoot
Inhibit function
Output over current and short circuit protection
Maximum power density：108W/in3
Hermetically sealed metal case

2. Scope of application of HNTA0510S Non-isolated Point of Load DC to DC Converters (POL)

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

3. Description of HNTA0510S Non-isolated Point of Load DC to DC Converters (POL)

The HNTA0510S is a highly reliable, output voltage adjustable non-isolated DC-DC converters with BUCK circuit topology and pulse width modulation principle. The output sampling voltage is directly feedbacked to modulate the pulse width to achieve closed-loop control to meet the stability of the voltage output requirements. By changing the external resistance method to achieve the output voltage 0.8V-3.3V adjustable. The series of products are made by the thick-film hybrid integrated production process, metal sealed the package. The design and manufacturing process of HNTA0510S Series converters are in compliance with MIL-PRF-38534.

4. Technical Specifications of HNTA0510S Non-isolated 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）：5.8V

Output Power：35 W

Storage temperature：-65℃～150℃

Mechanical Shock：1500g

Lead temperature：300℃（10s）

Weight：17.5 g

Table 3 Electrical characteristics

Items	Sym	Conditions （Unless other wise， VI=5V，-55℃≤TC≤125℃）	A Group	Limited		Unit
Items	Sym	Conditions （Unless other wise， VI=5V，-55℃≤TC≤125℃）	A Group	Min	Max	Unit
Output voltage	Vo	VI=5V，IO=10A	1,2,3	0.780	0.820	V
		VI=5V，IO=10A		2.437	2.563
		VI=4.5V～5.5V，IO=10A		3.217	3.383
Output current	Io	VI=4.5V～5.5V	1,2,3	-	10	A
Output ripple voltage （Peak-peak）	VR	Vo=3.3V，IO=10A，BW =6MHz	1,2,3	-	80	mV
Current regulation	SI	Vo=3.3V，IO=0→10A	1,2,3	-	60	mV
Input current	II	Null，Inhibit connect Input G	1,2,3	-	3	mA
Input current	II	Null，Inhibit open	1,2,3	-	80	mA
efficiency	η	Vo=3.3V，Io=10A	1,2,3	91	-	%
Insulation resistance	RI	TA=25℃，impose 500V DC voltage between case and any pin (Expect pin 9)	1	100	-	MΩ
Short circuit power consumption	PD	Output short	1,2,3	-	3	W
Capacitive load ab	CL	TA=25℃，Vo=3.3V，Io=10A	4	-	5000	μF
switching frequencyb	fs	Vo=3.3V，Io=10A	4,5,6	240	350	kHz
Start-up Overshoot（peak）	VTO	Output voltageVI：0→5V，Vo=3.3V，IO=10A	4,5,6	-	40	mV
Start-up Delay	tTR	Output voltageVI：0→5V，Vo=3.3V，IO=10A	4,5,6	-	8	ms
Notes: a Capacitive load may be any value from 0 to the maximum limit with on influence to DC performance. b This parameter shall be guaranteed by design and tested only when there is qualification test and design or process change. c Load step transition time shall be more than 10μs, connect 100μF capacitor between positive input and ground. d Recovery time means the time that step start-up until the output voltage comes back to the ±1% of the typical value.

5. Circuit block diagram of HNTA0510S Non-ioslated Point of Load DC to DC Converters (POL)

Fig 2 HNTA0510S circuit block diagram

6. Typical Characteristic Curve (Testing condition as per TC=25℃， VIN=5V±0.15V,unless otherwise specified) of HNTA0510S Non-isolated Point of Load DC to DC Converters (POL)

Fig 3 HNTA0510S Efficiency

Fig 4 HNTA0510S Load

Fig 5 HNTA0510S Overshoot/Start-up Delay

7. MTBF Curve of HNTA0510S Non-isolated Point of Load DC to DC Converters (POL)

Fig 6 MTBF Temperature Curve（HNTA0510S）

8. Pin Designations of HNTA0510S Non-isolated Point of Load DC to DC Converters (POL)

Figure 7 Bottom View

Table 4 Pin Designation

Pin	Symbol	Designation	Pin	Symbol	Designation
1	VI	Positive input	6	Trim	Output Trimming
2	GND	Common GND	7	GND	Common GND
3	INH	Inhibit	8	Vo	Positive output
4	Track	Track	9	GNDC	Case GND
5	Sense+	Output positive terminal

9. Typical Connection Diagram of HNTA0510S Non-isolated Point of Load DC to DC Converters (POL)

C1=100μF；C2=10μF；C3=0.1μF C1、C2、C3 are chip capacitors
Fig 8 Connection Diagram
In fig 8，By adjusting the external resistor Rtr，can achieve different output voltage，Rtr and VO relationship is shown as follow：

Vo（V）	Rtr(kΩ) Reference
3.3	3.3
2.6	6.55
2.5	7.25
0.8	None

Fig 9 Inhibit Driver Circuit Diagram
The start-up delay (roughly 10ms when C=0.01uF) can be enlonged by adjusting the external capacitor.

10. Package Specifications of HNTA0510S Non-isolated Point of Load DC to DC Converters (POL)

Fig 10 Bottom View and Side View
Table 5 Package Outline

Symbols	Unit/mm
Symbols	Minimum	Nominal	Maximum
A	-	-	7.20
Фb1	0.51	-	0.77
Фb2	0.87	-	1.13
D	-	-	27.57
E	-	-	27.57
e a	3.71	4.01	4.31
e1 a	7.32	7.62	7.92
e2 a	3.51	3.81	4.11
e3 a	18.55	19.05	19.55
L	4.05	-	-

Table 6 Case Materials

Case Model	Header	Header Plating	Cover	Cover Plating	Pin	Pin Plating	Sealing	Notes
PP2727-09B	Cold Rolled Steel	Au	Steel (SPCC-SD)	Ni	Copper –core Compound	Au	Compression

11. Ordering Information of HNTA0510S Non-isolated Point of Load DC to DC Converters (POL)

Fig 11 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 : 4.5V～5.5V DC-DC Converter Point of Load DC to DC Converters 0.8V-3.3V DC-DC Converter

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