VPOL5A-5-SMT

Manufacturer: CUI Inc
Number of Outputs: 1
Voltage - Input (Max): 5.5V
Voltage - Output 2: -
Voltage - Output 3: -
Features: -
Mounting Type: Surface Mount
Operating Temperature: -40°C ~ 85°C
Packaging: Digi-Reel®Alternate Packaging
Voltage - Input (Min): 3V
Type: Non-Isolated (POL)
Voltage - Isolation: -
Efficiency: 94%
Series: V-Infinity VPOL5A
Voltage - Output 1: 0.8 ~ 3.6 V
Current - Output (Max): 5A
Power (Watts) - Manufacture Series: 18W
Package / Case: 5-DIP SMD Module
Size / Dimension: 0.80" L x 0.45" W x 0.24" H (20.3mm x 11.4mm x 6.1mm)


Features:

· high efficiency topology, typically 94% at3.3 Vdc
· industry standard footprint
· wide ambient temperature range, -40C to +85C
· cost efficient open frame design
· programmable output voltage via external resistor from 0.75 to 3.63 Vdc
· no minimum load requirement (stable at all loads)
· remote on/off
· remote sense compensation
· fixed switching frequency
· continuous short-circuit protection and over current protection
· over-temperature protection (OTP)
· monotonic startup with pre-bias at the output.
· UL/IEC/EN60950-1 (E222736) certified.




Application

· Layout Design Challenges.
· Convection Requirements for Cooling
· Thermal Considerations
· Power De-Rating Curves
· Efficiency vs Load Curves
· Input Capacitance at the Power Module
· Test Set-Up
· VPOL5A-5-SMT Series Output Voltage Adustment.
· Output Ripple and Noise Measurement
· Output Capacitance
· SMT Reflow Profile




Specifications

input voltage (V): 3.0-5.5

output power (W): 16.5 (max)

main output voltage: 0.75-3.3 (tri mmable)

output current (mA): 5A

size (LxWxH): 0.80x0.45x0.24 (SMT)

PARAMETER	NOTES and CONDITIONS	Device	Min.	Typical	Max.	Units
Input Voltage Continuous	ALL		0		5.8	Vdc
Operating Temperature See Thermal Considerations Section	ALL		-40		+85
Storage Temperature		ALL	-55		+125

Description

Electrical Description

A block diagram of the VPOL5A-5-SMT Series converter is shown in Figure 1. Extremely high efficiency power conversion is achieved through the use of synchronous rectification and drive techniques.

Essentially, the powerful VPOL5A-5-SMT series topology is based on a non-isolated synchronous buck converter. The control loop is optimized for unconditional stability, fast transient response and a very tight line and load regulation. In a typical pre-bias application the VPOL5A-5- SMT series converters do not draw any reverse current at start-up. The output voltage can be adjusted from 0.75 to 3.63vdc, using the TRIM pin with a external resistor. The converter can be shut down via a remote on/off input that is referenced to ground. This input is compatible with popular logic devices; a 'positive' logic input is supplied as standard. Positive logic implies that the converter is enabled if the remote on/off input is high (or floating), and disabled if it is low.

The converter VPOL5A-5-SMT is also protected against over-temperature conditions. If the converter is overloaded or the ambient temperature gets too high, the converter will shut down to protect the unit.

Thermal Packaging and Physical Design.

The VPOL5A-5-SMT series uses a multi-layer FR4 PCB construction. All surface mount power components are placed on one side of the PCB, and all low-power control components are placed on the other side. Thus, the Heat dissipation of the power components is optimized, ensuring that control components are not thermally stressed. The converter is an open-frame product and has no case or case pin. The open-frame design has several advantages over encapsulated closed devices. Among these advantages are: Efficient Thermal Management: the heat is removed from the heat generating components without heating more sensitive, small signal control components.

Environmental: Lead free open-frame converters are more easily re-cycled.

Cost Efficient: No encapsulation. Cost efficient open-frame construction.

Reliable: Efficient cooling provided by open frame construction offers high reliability and easy diagnostics.

Parameters:

Technical/Catalog Information	VPOL5A-5-SMT
Vendor	CUI Inc (VA)
Category	Power Supplies
Voltage - Input	3 ~ 5.5VDC
Output	3.63VDC
Power (Watts)	18W
Number of Outputs	1
1st Output	3.63 VDC @ 5A
2nd Output	-
3rd Output	-
4th Output	-
Type	Non-Isolated
Mounting Type	Surface Mount
Packaging	Cut Tape (CT)
Package / Case	5-SMD
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	VPOL5A 5 SMT VPOL5A5SMT 102 1288 1 ND 10212881ND 102-1288-1