VPOL5A-5-SMT-TR

Additional Resources: Product Page | 3D Model date 11/02/2021 page 1 of 11 SERIES: VPOL5A-5-SMT │ DESCRIPTION: POINT OF LOAD CONVERTER FEATURES • • • • • • • • • • • • • high efficiency topology, typically 94% at 3.3 Vdc industry standard footprint operating temperature range (-40~85°C) 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/ EN 60950-1 (E222736) certified MODEL input voltage typ (Vdc) VPOL5A-5-SMT Notes: 5 range (Vdc) 3~5.5 output voltage output current output power ripple and noise1 efficiency (Vdc) max (A) max (W) max (mVp-p) typ (%) 5 3.75 6.0 7.5 9.0 10.0 12.5 16.5 50 79 85 87 89 90 92 94 0.75 1.2 1.5 1.8 2.0 2.5 3.3 1. Ripple and noise are measured at 20 MHz BW by “parallel cable” method with 1 µF ceramic and 10 µF electrolytic capacitors on the output. PART NUMBER KEY VPOL5A -5- XX - XX Base Number Input Voltage Output Voltage cui.com Packaging Style SMT Additional Resources: Product Page | 3D Model CUI Inc │ SERIES: VPOL5A-5-SMT │ DESCRIPTION: POINT OF LOAD CONVERTER date 11/02/2021 │ page 2 of 11 INPUT parameter conditions/description min typ max units operating input voltage Vout < Vin - 0.5 Vdc 3.0 5 5.5 Vdc input under-voltage lockout turn-on voltage treshold turn-off voltage treshold lockout hysteresis voltage input current 0~0.5 Vdc no load input current 0.75 output 1.2 output 1.5 output 1.8 output 2.0 output 2.5 output 3.3 output off converter input current shutdown input idle current 2.0 1.9 0.1 5 25 30 30 35 35 35 35 inrush current input reflected-ripple current Vdc Vdc Vdc P-P thru 1µH inductor, 5Hz to 20MHz A mA mA mA mA mA mA mA 10 mA 0.1 A2s 150 mA OUTPUT parameter conditions/description capacitive load low ESR min output voltage set point at nominal input trim adjustment range selected by an external resistor line regulation input voltage range load regulation 10~100% load 0.75 leakage current µF 3.63 Vdc % % ±0.5 0 % 5 50% load step change 200 300 positive logic logic low (module off) logic high (module on) negative logic ogic low (module off) logic high (module on) A mV kHz or open circuit 0 0 0.4 0.4 Vdc Vdc or open circuit 0 2.8 0.4 0.4 Vdc Vdc 1 mA 2 ms 4.5 ms logic high, V on/off = 14V start-up time rise time temperature coefficient units ±0.4 switching frequency remote on/off max 3,000 ±1.5 operating current range transient response deviation typ -40~85°C ±0.03 %/°C PROTECTIONS parameter conditions/description short circuit protection auto recovery, hiccup min over temperature protection typ max 120 units °C SAFETY AND COMPLIANCE parameter conditions/description safety approvals 60950-1: UL/IEC/EN MTBF as per MIL-HDBK-217F @ 25°C RoHS yes min 1,500,000 cui.com typ max units hours Additional Resources: Product Page | 3D Model CUI Inc │ SERIES: VPOL5A-5-SMT │ DESCRIPTION: POINT OF LOAD CONVERTER date 11/02/2021 │ page 3 of 11 ENVIRONMENTAL parameter conditions/description min max units operating temperature see derating curve -40 85 °C -55 125 °C storage temperature DERATING CURVES Figure 1 cui.com typ Additional Resources: Product Page | 3D Model CUI Inc │ SERIES: VPOL5A-5-SMT │ DESCRIPTION: POINT OF LOAD CONVERTER date 11/02/2021 │ page 4 of 11 MECHANICAL parameter conditions/description dimensions 20.3 x 11.43 x 6.09 (0.8 x 0.45 x 0.24 inch) min weight units: inches [mm] tolerance: x.xx ±0.02 [±0.5], x.xxx ±0.010 [0.25] PIN CONNECTIONS Function 1 +Vo 2 Trim 3 Common 4 Vin 5 REM cui.com max units mm 2.3 MECHANICAL DRAWING Pin typ g Additional Resources: Product Page CUI Inc │ SERIES: VPOL5A-5-SMT │ DESCRIPTION: POINT OF LOAD CONVERTER EFFICIENCY CURVES cui.com | 3D Model date 11/02/2021 │ page 5 of 11 Additional Resources: Product Page CUI Inc │ SERIES: VPOL5A-5-SMT │ DESCRIPTION: POINT OF LOAD CONVERTER | 3D Model date 11/02/2021 │ page 6 of 11 THEORY OF OPERATION A block diagram of the VPOL5A-5-SMT Series converter is shown in Figure 2. 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 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. Figure 2 cui.com Additional Resources: Product Page | 3D Model CUI Inc │ SERIES: VPOL5A-5-SMT │ DESCRIPTION: POINT OF LOAD CONVERTER date 11/02/2021 │ page 7 of 11 TYPICAL APPLICATION CIRCUITS The SMT converters must be connected to a low AC source impedance. To avoid problems with loop stability source inductance should be low. Also, the input capacitors should be placed close to the converter input pins to de-couple distribution inductance. However, the external input capacitors are chosen for suitable ripple handling capability. Low ESR polymers are a good choice. They have high capacitance, high ripple rating and low ESR (typical