19-5194 Rev 0 10/11 MAX5969A Evaluation Kit Evaluates: MAX5969A/MAX5974A General Description Features The MAX5969A evaluation kit (EV kit) is a fully assembled S IEEE 802.3af/at-Compliant PD Interface Circuit and tested surface-mount circuit board featuring the S -36V to -57V Startup Input Voltage Range MAX5969A IEEE 802.3af/at-compliant network powered S 92% (typ) Efficiency device (PD) interface controller and the MAX5974A S Demonstrates Isolated 12W Flyback DC-DC inductive-feedback, spread-spectrum, current-mode Converter PWM controller. The EV kit is designed as a high-perfor- mance, compact, and cost-efficient solution for a Class S Isolated +12V Output at 1A 3 (scalable to Class 4) PD used in Power-over-Ethernet S 300kHz Switching Frequency (PoE) applications. S Configurable for Optocoupler Feedback Operation The EV kit demonstrates the full functionality of the S Scalable to 12V Class 4 PD MAX5969A, such as PD detection signature, PD classification signature, inrush current control, and input S PD Detection and Configurable Classification undervoltage lockout (UVLO). The EV kit also features Signatures an isolated 12W, 300kHz switching-frequency, synchro- S 2-Event Classification or Wall Adapter Detect nous-rectified flyback DC-DC converter topology, using Output the MAX5974A inductive-feedback, current-mode PWM S Inrush Current Limit of 135mA (typ) controller. The EV kit circuit is configured for an output voltage of +12V and provides up to 1A load current using S Internal UVLO at -35.6V (typ) primary-side regulation. The surface-mount transformer S Evaluates Endspan and Midspan Ethernet provides up to +1500V galvanic isolation for the output. Systems M The EV kit receives power from IEEE 802.3af/at-compli- S Simplified Wall Adapter Interface ant power-sourcing equipment (PSE). The PSE provides S Proven PCB Layout the required -36V to -57V DC power over an unshielded twisted-pair Ethernet network cable to the EV kits RJ45 S Fully Assembled and Tested magnetic jack. The EV kit features a 1 x 1Gb Ethernet RJ45 magnetic jack and two full-bridge diodes for sepa- Ordering Information appears at end of data sheet. rating the DC power provided by an endspan or midspan Ethernet system. The EV kit circuit can also be powered by a +36V to +57V wall adapter power source, applied at the WAD IN and WAD GND PCB pads. When a wall adapter power source is detected, it always takes precedence over the PSE source, allowing the wall adapter to power the EV kit. Warning: The EV kit is designed to operate with high voltages. Dangerous voltages are present on this EV kit and on equipment connected to it. Users who power up this EV kit or the power sources connected to it must be careful to follow safety procedures appropriately to work with high-voltage electrical equipment. Under severe fault or failure conditions, this EV kit may dissipate large amounts of power, which could result in the mechanical ejection of a component or of component debris at high velocity. Operate this kit with care to avoid possible personal injury. IEEE is a registered service mark of the Institute of Electrical and Electronics Engineers, Inc. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.MAX5969A Evaluation Kit Evaluates: MAX5969A/MAX5974A Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION Not installed, ceramic capacitors 1000pF, 50V X7R ceramic C1, C21 0 (0805) C19 1 capacitor ( 0402) Murata GRM155R71H102K 0.1FF Q10%, 100V X7R ceramic C2, C18 2 capacitors (0805) 2200pF, 100V X5R ceramic TDK C2012X7R2A104K C20, C22 2 capacitors (0603) Murata GRM188R72A222K 0.022FF Q10%, 25V X7R C3 1 ceramic capacitor (0603) 2200pF Q20%, 250V AC X7R Murata GRM188R71E223K C23 1 ceramic capacitor (2220) Murata GA355QR7GF222KW0IL 10FF Q10%, 25V X7R ceramic C4 1 capacitor (1206) Not installed, ceramic capacitors C24C29 0 Taiyo Yuden TMK316B7106K (0603) Not installed, ceramic capacitor 10pF Q5%, 50V C0G ceramic C31 0 (1210) C5 1 capacitor (0603) Murata GRM1885C1H100J 100V, 0.8A bridge rectifiers D1, D2 2 (miniDIP) 1FF Q10%, 100V X7R ceramic Diodes Inc. HD01-T C6, C13, C30 3 capacitors (1206) TDK C3216X7R2A105K 58V transient-voltage suppressor (SMB) 22FF Q20%, 63V electrolytic D3 1 Diodes Inc. SMBJ58A-13-F C7 1 capacitor (6.6mm x 6.6mm) (Top Mark: NG) Panasonic EEEFK1J220XP 100V, 2A Schottky diode (SMB) 1000pF Q10%, 1500V X7R D4 1 Diodes Inc. ES2B-13-F C8 1 ceramic capacitor (1808) AVX 1808SC102KAT1A Not installed, zener diode D5 0 (SOT23) 330pF Q5%, 50V C0G ceramic C9 1 capacitor (0603) 58V transient-voltage suppressor Murata GRM1885C1H331J D6 1 (SMA) Diodes Inc. SMAJ58A-13-F 47FF Q10%, 16V X5R ceramic C10 1 capacitor (1210) 100V, 1A rectifier (SMA) D7 1 Murata GRM32ER61C476K Diodes Inc. S1B-13-F 10FF Q10%, 16V X5R ceramic 60V, 500mA Schottky diode C11 1 capacitor (1206) D8 1 (SOD123) Murata GRM31CR61C106KC31K STMicroelectronics STPS0560 Not installed, Schottky diode 0.1FF Q10%, 50V X7R ceramic D9 0 (SOD123) C12, C17 2 capacitors (0603) Murata GRM188R71H104K 100mA, 80V switching diode D10 1 (SOD323) 0.01FF Q10%, 25V X7R ceramic Diodes Inc. 1N4148WS C14 1 capacitor (0603) Murata GRM188R71E103K Modular, side-entry, 8-position J1 1 jack assembly 0.047FF, 16V X7R ceramic C15 1 capacitor (0402) 80V, 2A common-mode choke Murata GRM155R71E473K L1 1 TDK ZJYS81R5-2P24 or Sumida CPFC74NP-4251-T11 100pF, 50V X7R ceramic C16 1 capacitor (0402) 3.3FH, 2.6A inductor L2 1 Murata GRM1555C1H101J Cooper Bussmann SD53-3R3-R Maxim Integrated Products 2