PI354X-00 Evaluation Board User Guide 36 V to 60 V IN, 2.5, 3.3, 5.0, and 12 V OUT Cool-Power Buck Regulator & LED Driver

Transcription

1 USER GUIDE UG: PIX- Evaluation Board User Guide V to V IN,.,.,., and V OUT Cool-Power Buck Regulator & LED Driver Contents Page Evaluation Board Supply & Load Connections PI--EVAL PI--EVAL PI--EVAL PI--EVAL Schematics 7 Mechanicals 8 Picor PCB Edge Connector Description 9 PCB Gerber Files Introduction The PIX- evaluation board demonstrates the features and benefits of Picor s ZVS high-voltage Buck Regulator family. There are four preconfigured evaluation boards available: PI--EVAL (. V), PI--EVAL (. V), PI--EVAL (. V) and PI--EVAL (. V). Please refer to the PIX- data sheet for individual regulator s specifications and design instructions. The evaluation board provides several options for applying input power ( and GND) and output load ( and GND). The user can solder tab style banana jacks or wire, use threaded connectors with retaining nuts, or solder turret pins for clip-on connections. The evaluation board family can demonstrate all the PIX- s features accessible to the user. The general purpose amplifier () is preset with a gain of two, but can be easily re-configured for differential measurements by adding extra resistors (RD-RD). The lighting option (LGH) can be explored by ordering any of the evaluation boards. When using the lighting option, connections are made between the (anode) and the LGH (cathode) terminals (see Figure ). Three parallel shunt footprints () are available to program a desired LED constant current. Each evaluation board is preset with a constant current of. A implementing three. Ω resistors in parallel (RS-RS). R, R7, and C are used to set the LGH compensation (please refer to the data sheet for design calculations, theory of operation, as well as maximum compliant voltage requirements). REA and REA are used to adjust the output voltage regulation. There are additional schematic features that allow a low frequency dimming circuit (included on the PI--EVAL- only) to be utilized. This consists of a MOSFET and driver circuit to allow the user to pulse the LED on and off using an external dimming PWM signal. This signal should be limited to less than khz. Since dimming circuity is only available on the PI--EVAL, be sure to order that part number if LED dimming is to be explored. Figure. Representative sample (board layout and size will vary) UG: vicorpower.com Applications Engineering: Page

2 The I/O pins are brought out to the right edge of the evaluation board to allow for easy monitoring or for adding additional circuitry. The status of the Power Good pin is indicated by a dual colored LED; red indicates that the regulator is disabled ( = V) or faulting and green indicates that the regulator is enabled ( >. or floating) and operating correctly. The and pins are accessible to allow for paralleling modules or for synchronization to an external clock. A footprint (C) for an external capacitor () is available to tailor the start-up profile of the converter. The error amplifier s output () is brought to a pin and in conjunction with the pin, can be used for paralleling two converters. The board was designed with an edge connector to facilitate in-house testing, but can be also used for evaluation purposes. The printed circuit board is four layers FR- 7Tg material with oz copper layers, IG pad finish and a board thickness of.. Evaluation Board Supply & Load Connections Figure. The recommended connections for input supply and output loading. All the I/O pins are brought out to the edge to allow for easy measurement and/or connection to the user s external circuitry. Figure. Lighting (LGH) external connections UG: vicorpower.com Applications Engineering: Page

3 Table. PI--EVAL Vendor Name Vendor Part Number C Capacitor, X7R Ceramic,.uF, V, Rohm MCH8CNKK 9 C-C8, CEMI Capacitor, Ceramic,.uF, V, %, X7R, Murata GRMER7AKA CMP Capacitor, X7R, 7pF, V, Murata GRM88R7H7KAD C9-C, C, C Capacitor, Ceramic, uf, V,%, X7S, TDK CX7SHMAB C Capacitor, NPO, 7pF, V, Murata GRM88CA7JAD D Diode, LED, Red/Green, mm x mm Rohm SML-PMUWT8 LIN Inductor, nh, A, FP EATON FPR-R-R LA Inductor,.9uH, 8A, HCV EATON HCV-R9-R REA Resistor, K, %,.W, Panasonic ERJ-GEYJV R, REA Resistor,.K, %,.W, Panasonic ERJ-EKFV RD-RD, RPWG, R Resistor,.K, %,.W, Rohm MCREZPFX R9, RD-RD, RZ Resistor, ohms, %,.W, Rohm MCREZPJ R Resistor, K, %,.W, Rohm MCREZPFX R7 Resistor,.99K, %,.W, Rohm MCREZPFX99 RIN Resistor,., %,.W, Rohm MCR8ERTFLR RGP Resistor, 9.9, %,.W, Rohm MCRERTF9R9 RS-RS Resistor,., %, W Panasonic ERJ-TRQFRU U Dual Schmitt Trigger Inverter, NC7WZ, SC7- Fairchild NC7WZEPX J Connector, Johnson Jack Tektronix JGP, JLGH Connector, Header Pins. pitch J, Header. Samtec TSW-8-7-F-S SiP High Voltage ZVS Buck SiP, V IN x x mm LGA SiP Picor PI--LGIZ Table. PI--EVAL (non-populated components) R, RD, R8, R, REA Resistor, %,.W, 7 C, C - C Capacitor, Ceramic, V,%, X7S, CEA, CEA, C, C Capacitor, X7R, V, CIN Electrolytic Capacitor, V ABLE, FT, SM Test point, Keystone JIN Johnson Jack, Tektronix -, +, +, -,,,,,,, VDEFF,, Thru-hole Test points, Vector KC UG: vicorpower.com Applications Engineering: Page

4 , continued Table. PI--EVAL 9 C-C8, CEMI Capacitor, Ceramic,.uF, V,%, X7R, Vendor Name Murata Vendor Part Number GRMER7AKA C9-C, C, C Capacitor, X7R, 7uF, V, %, Murata GRMER7A7KEL C Capacitor, NPO, 7pF, V, Murata GRM88CA7JAD C Capacitor, X7R Ceramic,.uF, V, Rohm MCH8CNKK CMP Capacitor, X7R, 7pF, V, Murata GRM88R7H7KAD D Diode, LED, Red/Green, mm x mm Rohm SML-PMUWT8 JGP, JLGH Connector, Header Pins." pitch J, Header." Samtec TSW-8-7-F-S J Connector, Johnson Jack Tektronix LA Inductor,.uH, A, HCV EATON HCV-R-R LIN Inductor, nh, A, FP EATON FPR-R-R R Resistor,.K, %,.W, Panasonic ERJ-EKFV R Resistor, K, %,.W, Rohm MCREZPFX R7 Resistor,.99K, %,.W, Rohm MCREZPFX99 RD-RD, RPWG, R Resistor,.K, %,.W, Rohm MCREZPFX R9, RD-RD, RZ Resistor, ohms, %,.W, Rohm MCREZPJ REA Resistor,.K, %,.W, Yageo RCFR-7KL REA Resistor,.K, %,.W, Yageo RCFR-7KL RGP Resistor, 9.9, %,.W, Rohm MCRERTF9R9 RIN Resistor,., %,.W, Rohm MCR8ERTFLR RS-RS Resistor,., %, W Panasonic ERJ-TRQFRU SIP High Voltage ZVS Buck SiP, V IN x x mm LGA SiP Picor PI--LGIZ U Dual Schmitt Trigger Inverter, NC7WZ, SC7- Fairchild NC7WZEPX Table. PI--EVAL (non-populated components) R, RD, R8, R, REA Resistor, %,.W, 7 C, C - C Capacitor, Ceramic, V, %, X7S, CEA, CEA, C, C Capacitor, X7R, V, CIN Electrolytic Capacitor, V ABLE, FT, SM Test point, Keystone JIN Johnson Jack, Tektronix -, +, +, -,,,,,,, VDEFF,, Thru-hole Test points, Vector KC UG: vicorpower.com Applications Engineering: Page

5 , continued Table. PI--EVAL 9 C-C8, CEMI Capacitor, Ceramic,.uF, V,%, X7R, Vendor Name Murata Vendor Part Number GRMER7AKA C9-C, C, C Capacitor, X7S, uf,.v, %, Murata GRMEC7J7MEL C Capacitor, NPO, pf, V, Murata GRM88CHJAD C Capacitor, NPO, 7pF, V, Murata GRM88CA7JAD C, C Capacitor, X7R Ceramic,.uF, V, Rohm MCH8CNKK CMP Capacitor, X7R, 7pF, V, Murata GRM88R7H7KAD LA Inductor,.uH, A, HCV EATON HCV-R-R LIN Inductor, nh, A, FP EATON FPR-R-R R Resistor,.K, %,.W, Panasonic ERJ-EKFV R Resistor, K, %,.W, Rohm MCREZPFX R7, R9 Resistor,.99K, %,.W, Rohm MCREZPFX99 R8 Resistor,.K, %,.W, Panasonic ERJ-EKFV R Resistor,., %,.W, Panasonic ERJ-EKFRV R, RD-RD, RPWG, R Resistor,.K, %,.W, Rohm MCREZPFX RD-RD, RZ Resistor, ohms, %,.W, Rohm MCREZPJ REA Resistor,.K, %,.W, Panasonic ERJ-EKFV REA Resistor,.K, %,.W, Yageo RCFR-7KL RGP Resistor, 9.9, %,.W, Rohm MCRERTF9R9 RIN Resistor,., %,.W, Rohm MCR8ERTFLR RS-RS Resistor,., %, W Panasonic ERJ-TRQFRU SIP High Voltage ZVS Buck SiP, V IN x x mm LGA SiP Picor PI--LGIZ JGP, JLGH, JPWM Connector, Header Pins." pitch J, Header." Samtec TSW-8-7-F-S J Connector, Johnson Jack Tektronix D Diode, LED, Red/Green, mm x mm Rohm SML-PMUWT8 U Dual Schmitt Trigger Inverter, NC7WZ, SC7- Fairchild NC7WZEPX U Gate Driver, FANTSX, SOT-- Fairchild FANTSX Q Transistor, N-Channel, V, A,.7mOhm, PG-TSDSON-8 Infineon Technologies BSZ7NLS G Table. PI--EVAL (non-populated components) R, RD, R, REA Resistor, %,.W, 7 C, C C Capacitor, Ceramic, V,%, X7S, CEA, CEA, C, C Capacitor, X7R, V, CIN Electrolytic Capacitor, V ABLE, FT, SM Test point, Keystone JIN Johnson Jack, Tektronix -, +, +, -,,,,,,, VDEFF,, Thru-hole Test points, Vector KC UG: vicorpower.com Applications Engineering: Page

6 , continued Table 7. PI--EVAL 9 C-C8, CEMI Capacitor, Ceramic,.uF, V,%, X7R, Vendor Name Murata Vendor Part Number GRMER7AKA C9-C, C, C, C7 Capacitor, X7S, uf,.v, %, Murata GRMEC7J7MEL C Capacitor, NPO, 7pF, V, Murata GRM88CA7JAD C Capacitor, X7R Ceramic,.uF, V, Rohm MCH8CNKK CMP Capacitor, X7R, 7pF, V, Murata GRM88R7H7KAD LA Inductor, H, A, FP7--R EATON FT--R LIN Inductor, nh, A, FP EATON FPR-R-R R, REA Resistor,.K, %,.W, Panasonic ERJ-EKFV R Resistor, K, %,.W, Rohm MCREZPFX R7 Resistor,.99K, %,.W, Rohm MCREZPFX99 RD-RD, RPWG, R Resistor,.K, %,.W, Rohm MCREZPFX R9, RD-RD, RZ Resistor, ohms, %,.W, Rohm MCREZPJ REA Resistor,.K, %,.W, Rohm MCREZPFX RGP Resistor, 9.9, %,.W, Rohm MCRERTF9R9 RIN Resistor,., %,.W, Rohm MCR8ERTFLR RS-RS Resistor,., %, W Panasonic ERJ-TRQFRU SIP High Voltage ZVS Buck SiP, V IN x x mm LGA SiP PI-- LGIZ Picor JGP, JLGH Connector, Header Pins." pitch J, Header." Samtec TSW-8-7-F-S J Connector, Johnson Jack Tektronix U Dual Schmitt Trigger Inverter, NC7WZ,SC7- Fairchild NC7WZEPX D Diode, LED, Red/Green, mm x mm Rohm SML-PMUWT8 Table 8. PI--EVAL (non-populated components) R, RD, R8, R, REA Resistor, %,.W, 7 C, C - C Capacitor, Ceramic, V,%, X7S, CEA, CEA, C, C Capacitor, X7R, V, CIN Electrolytic Capacitor, V ABLE, FT, SM Test point, Keystone JIN Johnson Jack, Tektronix -, +, +, -,,,,,,, VDEFF,, Thru-hole Test points, Vector KC UG: vicorpower.com Applications Engineering: Page

7 8 7 Schematics J J Tie J VSUPPLY RIN. LIN FPR-RXXX + LA ZVS B-B Stacked Ind VSW + J CEMI.uF CIN C C C C C C C7 C8.uF.uF.uF.uF.uF.uF.uF.uF J9 J K9 K K K K C9 C C C C C C C C7 C8 C9 C J - G9 G H9 H F F SIPA VS VS VS VS VS VS VS K K K K7 G H - J D C E9 E S Tie FT H ABLE FT R.k FT FT FT C.uF RPWG.k B A A A B E A TEST TEST TEST TEST LGH COMP EAIN A B C D EAIN REA * CEA CEA REA REA * JGP RGP 9.9 S ***NOTE Edge Connector Pinout Changes*** and VSUPPLY pins (P and P) are swapped for this application versus the connector pinout of the PI7XX eval boards. TOP VIEW S LGH A A A7 A8 A9 RD VSUPPLY CN P P P P DUAL LED ORITATION A VCC U NC7WZ Y J DA LGH_IN Q C R nf K R8 K R9.99K IS R7.99K C 7pF R R OUT JLGH C.uF GND VDD IN+ IN- C JPWM RZ CMP.7nF RZ C RD RD.k RD RD.k FT FT SAMTEC LPHS FT A GND Y DB R.k RS. RS. U FAN JPWM: IN+ to GND, disable Q JPWM: IN+ to, Q continuous ON JPWM: IN+ to OP, drive with PWM signal Fault Status Indicator RS. F F PWM PCB PCB88 Fiducials PCB88 Figure. PI--EVAL Schematic with dimming circuit. J J Tie J VSUPPLY RIN. LIN FPR-RXXX + LA ZVS B-B Stacked Ind VSW + J CEMI.uF CIN C C C C C C C7 C8.uF.uF.uF.uF.uF.uF.uF.uF J9 J K9 K K K K C9 C C C C C C C C7 C8 C9 C J - G9 G H9 H F F SIPA VS VS VS VS VS VS VS K K K K7 G H - J D C E9 E S Tie H ABLE FT FT R.k FT FT FT C.uF RPWG.k B A A A B E A TEST TEST TEST TEST LGH COMP EAIN A B C D EAIN REA * CEA CEA REA REA * JGP RGP 9.9 S ***NOTE Edge Connector Pinout Changes*** and VSUPPLY pins (P and P) are swapped for this application versus the connector pinout of the PI7XX eval boards. TOP VIEW S LGH A A A7 A8 A9 RD VSUPPLY CN P P P P DUAL LED ORITATION U NC7WZ J LGH_IN C R K R8 R9 Ohm R7.99K C 7pF JLGH C C RZ CMP.7nF RZ RD RD.k RD RD.k FT FT SAMTEC LPHS FT A VCC Y DA IS A GND Y DB R.k RS. RS. PCB Fault Status Indicator RS. F F PCB9 Fiducials PCB88 Figure. PI//--EVAL schematics UG: vicorpower.com Applications Engineering: Page 7

8 Jumper Connection To ensure proper device operation, the evaluation board jumpers must be fastened as shown in Table 9. Table 9. Jumper connections Op State JGP JLGH JPWM Device Voltage Mode (CV) short short short to GND ALL LGH (CC) short open short to ALL LGH (CC) with Dimming Freq. Resp. Measurement short Open, inject signal across pins open open, connect Ext. Gen. to center pin and GND PI--EVAL only short short to GND ALL Mechanicals Figure. PI//--EVAL Evaluation Board Dimensions Figure 7. PI/--EVAL Evaluation Board Dimensions PI--EVAL is shown, PI-- EVAL inductor layout differs from that shown.".9" J.".".9"." J + CIN FT ABLE FT ABLE CIN GND CEMI C7 C C C C C C JLGH JGP CEMI C7 C C C C C C JLGH JGP."." LGH RS RS RS RIN LIN C8 LA RD RD RD RD RD RGP REA REA CEA REA CEA RZ C CMP RZ R R7 C C."." RS RIN RS RS LIN C8 LA - RD RD RD RD RD RGP REA REA CEA REA CEA RZ C CMP RZ R R7 C C C C9 - + GND J C C7 C8 C C C C9 C C C C R8 R9 R C U D RPWG Fault Status R PIX-XX Eval Board C C9 + J C7 C8 C C C C C9 C C C C R8 R9 R C U Fault Status D PI-XX Eval Board R RPWG UG: vicorpower.com Applications Engineering: Page 8

9 PICOR PCB Edge Connector Description SAMTEC reference mechanical drawings: based on EXTreme LPHPower Socket assembly series, available from Samtec s website PCB dimensions: Recommended PCB layout for LPHS-XX-XX-X-VXX-XX PCB Layout.pdf Right angle socket: LPHS-XX-XX-X-RTX-XX-MKT.pdf Vertical socket: LPHS-XX-XX-X-VXX-XX-MKT.pdf Figure 8. Edge Connector Details PAD Numbering Figure 9. Top (Component) View Figure. Bottom View UG: vicorpower.com Applications Engineering: Page 9

10 PICOR PCB Edge Connector Description, continued Schematic Symbol Figure. Edge connector schematic PAD Definitions Table. PAD definitions PAD NAME Description P,P Power ground connection for the input supply and output load P VSUPPLY Output voltage connection P Input voltage connection,,, 7, 8,, ABLE Enable input Signal ground used as reference for I/O measurements Power ground used as reference for input and output voltage measurements FT Use only with factory guidance Use only with factory guidance 9 FT Use only with factory guidance Soft-start and track input Error amplifier output Differential amplifier output Differential amplifier inverting input 7 VPN Differential amplifier non-inverting input 8 Sync output pin 9 Sync input pin Power Good FT Use only with factory guidance SiP s (internal or external) voltage supply Output voltage measured at SiP s output Input supply voltage measured at SiP s input UG: vicorpower.com Applications Engineering: Page

11 PCB Design Files ODB++ evaluation board design files are available for download on Vicor s website. Product Design File Format Link to Download PI--EVAL ODB++ Eval ODB++.zip PI--EVAL ODB++ Eval ODB++.zip PI--EVAL ODB++ Eval ODB++.zip PI--EVAL ODB++ Eval ODB++.zip Rev E 8/ vicorpower.com Applications Engineering: Page