VPOL5A-5-SMT CUI | Alldatasheet
Document overview
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- PDF pages: 11
Technical content
rev. page date rev. page date DESCRIPTION: point of load converter 1 of 11 PART NUMBER: VPOL5A-5-SMT 1. INTRODUCTION 2. VPOL5A-5-SMTCONVERTER FEATURES 3. GENERAL DESCRIPTION
3.1 Electrical Description
3.2 Thermal Packaging and Physical Design. 4. TECHNICAL SPECIFICATIONS 5. MAIN FEATURES AND FUNCTIONS
5.1 Operating Temperature Range
5.2 Over-Temperature Protection (OTP)
5.3 Output Voltage Adjustment
5.4 Safe Operating Area (SOA)
5.5 Over Current Protection
5.6 Remote On/Off
5.7 UVLO (Under-Voltage Lockout)
- SAFETY 6.1 Input Fusing and Safety Considerations. 7. APPLICATIONS 7.1 Layout Design Challenges.
7.2 Convection Requirements for Cooling
7.3 Thermal Considerations
7.4 Power De-Rating Curves
7.5 Efficiency vs Load Curves
7.6 Input Capacitance at the Power Module
7.7 Test Set-Up
7.8 VPOL5A-5-SMT Series Output Voltage Adustment.
7.9 Output Ripple and Noise Measurement
7.10 Output Capacitance
7.11 SMT Reflow Profile
- MECHANICAL OUTLINE DIAGRAMS
8.1 SIP/SMT05 Mechanical Outline Diagrams
8.2 SMT Tape and Reel Dimensions
features
- high efficiency topology, typically 94% at
3.3 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.
synchronous rectification and drive control techniques.
- VPOL5A-5-SMTConverter Features
3.63 Vdc
Monotonic Startup with pre-bias at the output. Figure 1. Extremely high efficiency power conversion is achieved through the use of synchronous rectification and drive techniques. remote on/off input is high (or floating), and disabled if it is low. the converter will shut down to protect the unit. Figure 1. Electrical Block Diagram 3.2 Thermal Packaging and Physical Design. The VPOL5A-5-SMT series uses a multi-layer FR4 PCB construction. offers high reliability and easy diagnostics.
rev. page date DESCRIPTION: point of load converter 3 of 11 PART NUMBER: VPOL5A-5-SMT 4. Technical Specifications (All specifications are typical at nominal input, full load at 25 unless otherwise noted.) PARAMETER NOTES and CONDITIONS Device Min. Typical Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous A LL 0 5.8 Vdc Operating Temp erature See Thermal Considerations Section A LL -40 +85 Storage Temperature ALL -55 +125 INPUT CHARACTERISTICS Operating Input Voltage Vo,set Vin-0.5 Vdc ALL 3 .0 5 5.5 Vdc Input Under-Voltage Lockout Turn-On Voltage Threshold ALL 2 .0 Vdc Turn-Off Voltage Threshold ALL 1 .9 Vdc Lockout Hysteresis Voltage ALL 0 .1 Vdc Maximum Input Current Vin=0 to 5.5 Vdc , Io=Io,max. ALL 5 A No-Load Input Current Vo=0.75V Vo=1.2V Vo=1.5V Vo=1.8V Vo=2.0V Vo=2.5V Vo=3.3V ALL m A Off Converter Input Current Shutdown input idle current ALL 10 mA Inrush Current (I t) ALL 0.1 A s Input Reflected-Ripple Current P-P thru 1uH inductor, 5Hz to 20MHz ALL 1 50 mA OUTPUT CHARACTERISTIC Output Voltage Set Point Vin=Nominal Vin , Io=Io.max, Tc=25 ALL -1.5% V o,set +1.5% Vdc Output Voltage Trim Adjustment Range Selected by an external resistor ALL 0.75 3.63 Vdc Output Voltage Regulation Load Regulation Io=Io.min to Io.max ALL -0.5 +0.5 % Line Regulation Vin=low line to high line ALL -0.4 +0.4 % Temperature Coefficient Ta=-40 to 85 ALL -0.03 +0.03 %/ Output Voltage Ripple and Noise 5Hz to 20MHz band width Peak-to-Peak Full Load, 1uF ceramic and 10uF tantalum ALL 50 mV RMS Full Load, 1uF ceramic and 10uF tantalum ALL 20 mV External Capacitive Load Lo w ESR ALL 3000 uF Operating Output Current Range ALL 0 5 A Output DC Current-Limit Inception Output Voltage =90% Nominal Output Voltage ALL 6 9.5 15 A Shout Circuit Protection Conti nuous with Hiccup Mode
rev. page date DESCRIPTION: point of load converter 4 of 11 PART NUMBER: VPOL5A-5-SMT PARAMETER NOTES and CONDITIONS Device Min. Typical Max. Units DYNAMIC CHARACTERISTICS Output Voltage Transient Response Error Brand 50% Step Load Change, di/dt=0.1A/us ALL 200 mV Setting Time (within 1% Vout nominal) 50% Step Load Change, di/dt=0.1A/us ALL 200 us EFFICIENCY 100% Load Vo=0.75V Vo=1.2V Vo=1.5V Vo=1.8V Vo=2.0V Vo=2.5V Vo=3.3V ALL ISOLATION CHARACTERISTICS Input to Output Non-isolation ALL 0 Vdc FEATURE CHARACTERISTICS Switching Frequency ALL 300 KHz On/Off Control, Positive Logic Remote On/Off Logic Low (Module Off) Logic High (Module On) or Open Circuit Standard Model Vin 0.4 Vdc Vdc On/Off Control, Negative Logic Remote On/Off Logic Low (Module On) Logic High (Module Off) or Open Circuit Suffix “N” Model 2.8 0.4 Vin Vdc Vdc On/Off Current (for both remote on/off logic) Ion/off at Von/off=0.0V ALL 1 mA Leakage Current (for both remote on/off logic) Logic High, Von/off=14V ALL 1 mA Turn-On Delay and Rise Time Turn-On Delay Time, From On/Off Control Von/off to 10%Vo,set ALL 2 ms Turn-On Delay Time, From Input Vin,min. to 10%Vo,set ALL 2 ms Output Voltage Rise Time 10%Vo,set to 90%Vo,set ALL 4.5 ms Over Temperature Protection ALL 120 GENERAL SPECIFICATIONS MTBF Io=100%of Io.m ax;Ta=25 p er MIL-HDBK- 217F ALL 1 .5 M hours Weight ALL 2 .3 grams Dimensions
- Main Features and Functions
Air velocity (forced or natural convection). Mounting orientation of converter PCB with respect to the Airflow. Motherboard PCB design, especially ground and power planes. These can be effective heat sinks for the converter. such as external overload condition or a system fan failure. Figure 2. Maximum Output Current Safe Operating Area All different voltage models have a full continuous short-circuit protection. SMTremote on/off drive circuit as shown as figure 3, 4.
Figure 3. Positive Remote On/Off Input Drive Circuit Figure 4. Negative Remote On/Off Input Drive Circuit hysteresis (about 100mV) built in to provide noise immunity at start-up. 6.1 Input Fusing and Safety Considerations. formal approval from the following test agencies.
- CB Certificate from an internationally recognized test house in
The VPOL5A-5-SMT series converters do not have an internal fuse. with a maximum rating of 10A. 7.1 Layout Design Challenges. grounds. The recommended SMT footprint as shown as figure 5. Figure 5. Recommended SMT Footprint (Top View)
Figure 3. Typical Power De-rating for 5V IN 3.3Vout
- specific input & output derating curves available, please
rev. page date DESCRIPTION: point of load converter 8 of 11 PART NUMBER: VPOL5A-5-SMT Vo=3.3V (Eff Vs Io) 70% 75% 80% 85% 90% 95% 100% Current Load (A) Efficincy (%) 4.5V 5.0V 5.5V Vo=2.5V (Eff Vs Io) 70% 75% 80% 85% 90% 95% 100% Current Load (A) Efficincy (%) 3.0V 5.0V 5.5V Vo=1.8V (Eff Vs Io) 70% 75% 80% 85% 90% 95% 100% Current Load (A) Efficincy (%) 3.0V 5.0V 5.5V Vo=1.5V (Eff Vs Io) 70% 75% 80% 85% 90% 95% 100% Current Load (A) Efficincy (%) 3.0V 5.0V 5.5V Vo=1.2V (Eff Vs Io) 70% 75% 80% 85% 90% 95% 100% Current Load (A) Efficincy (%) 3.0V 5.0V 5.5V Vo=0.75V (Eff Vs Io) 60% 65% 70% 75% 80% 85% 90% 95% 100% Current Load (A) Efficincy (%) 3.0V 5.0V 5.5V VPOL5A-5-SMT VPOL5A-5-SMT VPOL5A-5-SMT VPOL5A-5-SMT VPOL5A-5-SMT VPOL5A-5-SMT
capacitance, high ripple rating and low ESR (typical <100mohm). of 1uH. Current is measured at the input of the module. Figure 10. Input Reflected-Ripple Test Setup Load regulation and line regulation. Where: VHL is the output voltage of maximum input voltage at full load. VLL is the output voltage of minimum input voltage at full load. Figure 11. VPOL5A-5-SMT Test Setup
7.8 VPOL5A-5-SMT Series Output Voltage Adustment. Figure 12. Trim-up Voltage Setup
0.75 Open
- a coaxial cable with a 50ohm termination was used to prevent
Figure 13. Output Voltage Ripple and Noise Measurement Set-Up low ESR output capacitors should be located close to the point of load. considerations for low resistance and low inductance tracks. close to the point of load and outside the remote compensation point. An example of the SMT reflow profile is given in Figure 14.
rev. page date DESCRIPTION: point of load converter 11 of 11 PART NUMBER: VPOL5A-5-SMT 8. Mechanical Outline Diagrams
8.1 VPOL5A-5-SMT Mechanical Outline Diagrams
Dimensions are in millimeters and inches otherwise noted Dimensions are in Inches (millimeters) BOTTOM VIEW OF BOARD 0.80 0.340 0.450 0.05 0.180 0.35 0.062 0.090 0.1600.1600.190 0.062 0.24 Surface Mount Contact 5 Places GND TRIM VOUT ON/OFFVIN (20.3) (2.29) (1.57) (8.9) (8.64) (11.43) (1.5) (1.3) 0.06 (1.57) (6.09) Figure 15 VPOL5A-5-SMT Mechanical Outline Diagram The Tape Reel dimensions for the SMT module is shown in Figure 16. E Po t D P F Ko Ao Bo W Figure 16 – S MT Tape a nd Reel Dimensions