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Evaluates: MAX5995A/B/C/MAX5974DMAX5995B Evaluation Kit
General DescriptionThe MAX5995 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board featuring an Ethernet port, network powered-device (PD) interface controller circuit for -57V supply rail systems. The EV kit uses the MAX5995B IEEE® 802.3af/at/bt-compliant network PD interface controller in a 16-pin TQFN package with an exposed pad. The IC is used in Power-over-Ethernet (PoE) applications requiring DC power from an Ethernet network port for PDs such as VoIP phones, wireless access nodes, security cameras, lighting, and building automation.The EV kit receives power from IEEE 802.3af/at/bt-compliant power-sourcing equipment (PSE). Refer to the MAX5952, MAX5965A/MAX5965B, and MAX5980 IC data sheets for PSE controllers. The PSE provides the required -36V to -57V DC power over an unshielded twisted-pair Ethernet network cable to the EV kit’s RJ45 magnetic jack. The EV kit features a 1 x 1 Gigabit RJ45 magnetic jack and two active full-wave rectifiers (N101 and N102) for separating the DC power provided by an endspan or midspan Ethernet system.The EV kit can also be powered by a wall adapter power source. The EV kit provides PCB pads to accept the output of a wall adapter power source. When a wall adapter power source is detected, it always takes precedence over the PSE source and allows the wall adapter to power the EV kit.The EV kit demonstrates the full functionality of the IC, such as PD detection signature, PD classification signature, Multi-Event Classification (MEC), Intelligent MPS, inrush current control, input undervoltage lockout (UVLO), and DC-DC step-down converter. The step-down converter operates at a fixed 290kHz switching frequency and is configured for an isolated active-clamped forward topology with output voltage +12V DC that can deliver 5.5A of current.
Features ● IEEE 802.3af/at/bt-Compliant PD Interface Circuit ● Multi-Event Classification 0-8 ● -36V to -57V Input Range ● Demonstrates a 71W PD Design with Isolated Active-
Clamped Forward Topology DC-DC Converter ● +12V Output at 5.5A ● Startup Inrush Current Limit of 135mA (typ) ● Current Limit During Normal Operation ● Evaluates Endspan and Midspan Ethernet Systems ● Type 1-4 PSE Classification Indicator ● Simplified Wall Adapter Interface ● Demonstrates Sleep and Ultra-Sleep
Power-Saving Modes ● Proven PCB Layout ● Fully Assembled and Tested
319-100275; Rev 0; 11/18
Ordering Information appears at end of data sheet.
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 power the 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.
Click here for production status of specific part numbers.
Maxim Integrated │ 2www.maximintegrated.com
Evaluates: MAX5995A/B/C/MAX5974DMAX5995B Evaluation Kit
Quick StartRequired Equipment
● MAX5995_EVKIT_A ● An IEEE 802.3af/at/bt compliant PSE and
a Category 5e Ethernet network cable ● -48V, 3A capable DC power supply ● Voltmeter
ProcedureThe EV kit is fully assembled and tested. Follow the steps below to verify board operation:Caution: Do not turn on the power supply until all connections are completed. 1) Use one of the following methods to power the EV kit:
a) If network connectivity is required: Connect a Category 5e Ethernet network cable from the EV kit input port RJ45 connector to the correspond-ing PSE Ethernet LAN connection that provides power to the EV kit.
b) If network connectivity is not required: Connect a -48V DC power supply between the -54V and GND PCB pads on the EV kit. Connect the power-supply positive terminal to the GND pad and the negative terminal to the -54V pad.
2) Activate the PSE power supply or turn on the external DC power supply.
3) Using a voltmeter, verify that the EV kit provides +12V across the VOUT and RTN PCB pads.
Detailed Description of Hardware (or Software)The MAX5995 EV kit features an Ethernet port and network PD interface controller circuit for -57V supply rail systems. The EV kit contains a IEEE® 802.3af/ at-compliant network PD interface controller in a 16-pin TQFN-EP package. The IC is used in PoL applications for powering PDs from an unshielded twisted-pair (UTP) Ethernet Category 5e network cable and PSE port using endspan or midspan Ethernet systems.The EV kit receives power from an IEEE 802.3af/ at-compliant PSE and a UTP cable connected to the EV kit’s RJ45 magnetic jack. The EV kit uses a 1 x 1 gigabit RJ45 magnetic jack and two active full-wave bridge power rectifiers to separate the -57V DC power sent by the PSE. The EV kit can accept power from an endspan or midspan PSE network configuration.
The EV kit can also accept power from a wall adapter power source. When a wall adapter power source is detected between the POWER+ and POWER- pads, the IC’s internal isolation switch disconnects, which allows the wall adapter to supply power to the EV kit. The EV kit demonstrates the full functionality of the IC such as PD detection signature, PD classification signa-ture, Multi-Event Classification (MEC), Intelligent MPS, inrush current control, and UVLO. Resistor R101 sets the PD detection impedance. Resistors R44 and R6 set the PD classification signatures.The EV kit’s integrated DC-DC step-down converter is configured for an isolated ACTIVE-CLAMPED forward converter topology with output voltage of +12V and provides up to 5.5A at the output while achieving up to 92.5%, 92.4% and 92% efficiencies for 42V/48V/57V input, respectively. The step-down converter operates at a fixed 290kHz switching frequency.
PD Class selection by Classification resistorsBy selecting the two external resistors connected to CLSA and CLSB pins, the power consumption requested by the PD can be defined. Table 1 shows the the RCLSA and RCLSB resistor values needed to set for PD class and the PD power consumption defined by standards. RCLSA sets classification current for the 1st and 2nd class Events for 0~4 class PD complaint with IEEE 802.3af/at standard, and RCLSB set classification current for the 3rd to 5th class event for 0~8 class PD complaint with IEEE 802.3bt standard.
IEEE is a registered service mark of the Institute of Electrical and Electronics Engineers, Inc.
Table 1. PSE Type and PD Class with Classification Resistor RCLSA and RCLSB
PD CLASS POWER REQUESTED BY PD RCLSA RCLSB
0 12.95W 619 OPEN
1 3.84W 118 OPEN
2 6.49W 66.5 OPEN
3 12.95W 43.2 OPEN
4 25.5W 30.9 30.9
5 38.25W 30.9 619
6 51W 30.9 118
7 61W 30.9 66.5
8 71W 30.9 43.2
Maxim Integrated │ 3www.maximintegrated.com
Evaluates: MAX5995A/B/C/MAX5974DMAX5995B Evaluation Kit
Wall Adapter Power Source (POWER+, POWER-) The EV kit can also accept power from a wall adapter power source. Use the POWER+ (0V) and POWER- (-10V to -57V) PCB pads to connect the wall adapter power source. The wall adapter power source operating-voltage range must be within +10V to +57V for the EV kit. When the wall adapter power source is above +10V it always takes precedence over the PSE source. Once the wall adapter power source is detected, the IC’s internal isolation switch disconnects. The wall adapter power is supplied to VDD through diode S210. Once it takes over, the classification process is disabled.When the wall adapter power source is below +8V, the PSE provides power through the IC’s internal isolation switch. Diode S210 prevents the PSE from back-driving the wall adapter power source when it is below +8V.
Undervoltage Lockout (UVLO)The EV kit operates up to a -57V supply with a turn-on UVLO threshold (VON) at -35.4V and a turn-off UVLO threshold (VOFF) at -30.0V. When the input voltage is above VON, the EV kit is enabled. When the input voltage goes below VOFF, the EV kit is disabled.
Sleep, Ultra-Sleep Modes and LED OperationThe EV Kit supports operating the MAX5995 in power saving modes such as the Sleep and Ultra Sleep. By using the SW3 DIP-switch, the SL pin could be driven low to enter the Sleep mode. The ultra-sleep mode could be entered by driving both SL and ULP pin to low (using DIP switch SW1, SW3). The device could be commanded to exit sleep or ultra-sleep mode by driving the WK pin low through the switch SW2.The device features a dedicated LED pin which can be programmed to source out current when the device is in MPS, sleep or ultra-sleep modes. Diode named LED con-nects between LED pin and VSS and lights up in green color to indicate LED current. The magnitude of the LED current can be controlled as per the value of the R105 resistor connected between the SL pin and VSS.
EV Kit Compliance to MAX5995A, MAX5995CBy default, the EV kit is installed with MAX5995B IC. However, the EV kit can also be used to evaluate the MAX5995A and MAX5995C variants of the IC without any change in schematic. Do note that for evaluating MAX5995C, the duty cycle of the MPS current is selectable through the choice of the resistor R40. This resistor should not be installed while evaluating MAX5995A, MAX5995B.
Maxim Integrated │ 4www.maximintegrated.com
Evaluates: MAX5995A/B/C/MAX5974DMAX5995B Evaluation Kit
Note: Indicate that you are using the MAX5995 when contacting these component suppliers.
#Denotes RoHS compliant.
SUPPLIER WEBSITE
CoilCraft www.coilcraft.com
Comchip www.comchiptech.com
Diodes Incorporated www. diodes.com
Emerson Network Power www.vertivco.com
Fairchild Semiconductor www.onsemi.com
Kemet www.ir.kemet.com
Keystone www.keyelco.com
Lite-On Electronics www. us.liteon.com
Maxim Integrated www.maximintegrated.com
Murata www.murata .com
On Semiconductor www.onsemi.com
Panasonic www.panasonic.com
Pulse Electronics www.pulseelectronics.com
Renesas Technology Group www.renesas.com
Samsung Electronics www.samsung.com
Stackpole Electronics www.seielect.com
Sumida www.sumida.com
Taiyo Yuden www.yuden.co.jp
TDK www.us.tdk.com
TE Connectivity www.te.com
Texas Instruments www.ti.com
Vishay Dale www.vishay.com
Wurth Elektronik www.we-online.com
PART TYPE
MAX5995BEVKIT# EVKIT
Component Suppliers
Ordering Information
Maxim Integrated │ 5www.maximintegrated.com
Evaluates: MAX5995A/B/C/MAX5974DMAX5995B Evaluation Kit
PART QTY DESCRIPTION
C1 11µF ±10%, 16V X7R ceramic capacitor (0805) Murata GRM21BR71C105KA01
C2, C11, C31, C36 4
100pF ±5%, 50V C0G ceramic capacitor (0603) Murata GRM1885C1H101JA01
C3, C5, C10 3
0.047µF ±10%, 50V X7R ceramic capacitor (0603) Tdk CGA3E2X7R1H473K080AA
C4, C32 20.01µF ±5%, 50V X7R ceramic capacitor (0603) Kemet C0603C103J5RAC
C6 11µF ±10%, 16V X7R ceramic capacitor (0603) Taiyo Yuden EMK107B7105KA
C7, C8, C13 3
2.2µF ±10%, 100V X7R ceramic capacitor (1210) Murata GRM32ER72A225KA35
C14 10.047µF ±10%, 500V X7R ceramic capacitor (1206) Vishay Vitramon VJ1206Y473KXEAT5Z
C15, C23, C25 3
0.1µF ±10%, 50V X7R ceramic capacitor (0603) Murata GCJ188R71H104KA12
C19 1220pF ±10%, 250V X7R ceramic capacitor (0603) Murata GRM188R72E221K
C21, C22, C24, C33,
C605
1000pF ±10%, 250V X7R ceramic capacitor (2211) Murata GA352QR7GF102KW01)
C26 1100µF ±20%, 16V X7R tantalum capacitor (7343) Panasonic 16TQC100MYF
C27-C30, C34 5
22µF ±10%, 16V X5R ceramic capacitor (1206) Samsung Electronics CL31A226KOCLFN
C38 133µF ±20%, 100V aluminium electrolytic capacitor (Case G) Panasonic EEE-FK2A330P
C39 14700pF ±10%, 50V X7R ceramic capacitor (0603) Murata GRM188R71H472KA01
PART QTY DESCRIPTION
C41 12200pF ±10%, 50V X7R ceramic capacitor (0603) Murata GRM39X7R222K50V
C45 12200pF ±10%, 2000V X7R ceramic capacitor (1206) Kemet C1206X222KGRAC
C56-C59 40.1µF ±10%, 100V X7R ceramic capacitor (0805) Murata GRM21BR72A104KAC4
C93, C105 20.1µF ±10%, 100V X7R ceramic capacitor (0603) Murata GCJ188R72A104KA01
C101 10.068µF ±5%, 100V C0G ceramic capacitor (1206) Tdk CGA5L1C0G2A683J160
D2, D3, D6, D7 4 Schottky Diode, 100V, 2A,
SMB Comchip CDBB2100-G
D9, D10, D12-D15 6 Diode, 250V, 0.25A, SOD-323 Diodes
Incorporated BAV21WS-7-F
D11 1 Zener Diode, 10V, 0.005A, SOD-323 Diodes Incorporated BZT52C10S-7-F
D16 1 Zener Diode, 16V, 0.005A, SOD-323 Diodes Incorporated BZT52C16S-7-F
D17, D18 2 Rectifier bridge diode, 100V, 1.5A, SMT Diodes Incorporated DF1501S
D19 1 TVS Diode, 120V, 2A, SMA Diodes Incorporated SMAJ120A-13-F
D20 1 Zener Diode, 18V, 0.05A, SOD-323 Diodes Incorporated BZT52C18S-7-F
D101 1 TVS Diode, 58V, 100A, SMB Diodes Incorporated SMBJ58A-13-F
D103 1 Schottky Diode, 100V, 2A, SMT Fairchild Semiconductor S210
D105-D108 4 Zener Diode, 12V, 0.005A, SOD-323 On Semiconductor MM3Z12VT1G
H1-H4 4 Standoff, 1/2 Inch, Female-Threaded, Hex, Aluminium Generic Part 2203
H5-H8 4
Phillips machine screw, 1/4 Inch, Stainless Steel Mcmaster-Carr; Keystone; Mcmaster-Carr 4C25MXPS; 9900;91772A106
MAX5995B EV Kit Bill of Materials
Maxim Integrated │ 6www.maximintegrated.com
Evaluates: MAX5995A/B/C/MAX5974DMAX5995B Evaluation Kit
PART QTY DESCRIPTION
J1_DATA, J1_POWER 2
RJ45 Modular Jack Connector, Female, Through Hole, 8Pins Te Connectivity 5520252-4
L1 1Inductor; Ferrite, 1000µH ±20%, 0.125A, SMT Coilcraft LPS4018-105MR
L2 1 Inductor, Sheilded, 2.2µH ±20%, 6.0A, SMT Sumida CDMC6D28NP-2R2MC
L3 1Inductor, Sheilded, 4.7µH ±20%, 12.5A, SMT Sumida CDEP147NP-4R7MC-95
L4-L7 4Inductor, Ferrite-Bead, 220, Tol = ±25%, 2A, SMT Murata BLM18EG221SN1
L8-L15 8Inductor, Ferrite, 4.7µH ±20%, 1.10A, SMT (1008) Murata LQM2HPN4R7MG0
LED 1LED Diode, 2.1V, 0.03A, Green, SMT (1206) Lite-On Electronics Inc. LTST-C150GKT
N7 1 MOSFET N-channel, 150V, 26A, SO-8 Vishay Siliconix SI7430DP-T1-GE3
N9, N11 2 MOSFET N-channel, 100V, 60A, SO-8 Vishay Siliconix SIR882DP-T1-GE3
N12 1MOSFET P-channel, -150V, -8.9A, Powerpak1212-8 Vishay Siliconix SI7115DN-T1-GE3
N101, N102 2 MOSFET N-channel, 100V, 4.5A, SO-8 On Semiconductor FDS3992
Q1 1 Transistor NPN, 80V, 1A, SOT-89 Diodes Incorporated BCX5610TA
Q2 1 Transistor PNP, 40V, 0.6A, SOT-23 Fairchild Semiconductor MMBT4403
R1 1 316kΩ ±1% Resistor (0603) Vishay Dale CRCW0603316KFK
R2 1 100kΩ ±1% Resistor (0805) Panasonic ERJ-6ENF1003V
R3 1 1.5kΩ ±0.1% Resistor (0603) Panasonic ERA-3YEB152V
R4, R31, R33, R54 4 10kΩ ±0.1% Resistor (0603)
Vishay Dale TNPW060310K0BE
R5, R36 2 75kΩ ±0.1% Resistor (0603) Panasonic ERJ-PB3B7502
PART QTY DESCRIPTION
R6 1 115Ω ±1% Resistor (0603) Vishay Dale CRCW0603115RFK
R7 1 30kΩ ±1% Resistor (0603) Vishay Dale CRCW060330K0FK
R8, R79 2 0Ω ±5% Resistor (0603) Samsung Electronics RC1608J000CS
R9, R102, R104 3 0Ω ±0% Resistor (0603)
Vishay Dale CRCW06030000Z0
R10 1 51kΩ ±1% Resistor (0805) Vishay Dale CRCW080551K0FK
R11, R21, R23, R28 4 499kΩ ±1% Resistor (0402)
Panasonic ERJ-2RKF4993
R13, R41-R43 4 3Ω ±1% Resistor (0603)
Vishay Draloric CRCW06033R00FKEAHP
R15, R22, R27, R38 4 49.9kΩ ±1% Resistor (0402)
Vishay Draloric CRCW040249K9FKEDHP
R16 1 3.6kΩ ±1% Resistor (0603) Vishay Dale RK73H1J3601F
R17, R30 2 1kΩ ±0.1% Resistor (0603) Vishay Dale TNPW06031K00BE
R18 1 42.2kΩ ±0.1% Resistor (0805) TE Connectivity RN73C2A42K2B
R19 1 200kΩ ±1% Resistor (0603) Vishay Dale CRCW06032003FK
R20 1 510Ω ±1% Resistor (0603) Vishay Dale CRCW0603510RFK
R24 1 200Ω ±1% Resistor (1206) Vishay Dale CRCW1206200RFK
R25, R29 2 200Ω ±1% Resistor (0603) Vishay Dale CRCW06032000FK
R26 1 120kΩ ±1% Resistor (0603) Vishay Dale CRCW0603120KFK
R32 1 2kΩ ±1% Resistor (0603) Stackpole Electronics Inc. RNCP0603FTD2K00
R34 1 3.3kΩ ±1% Resistor (0603) Vishay Dale CRCW06033K30FK
R35 1 13kΩ ±1% Resistor (0603) Vishay Dale CRCW060313K0FK
R37 1 10Ω ±1% Resistor (0603) Vishay Dale CRCW060310R0FK
MAX5995B EV Kit Bill of Materials (continued)
Maxim Integrated │ 7www.maximintegrated.com
Evaluates: MAX5995A/B/C/MAX5974DMAX5995B Evaluation Kit
PART QTY DESCRIPTION
R44 1 30.9Ω ±1% Resistor (0603) Vishay Dale CRCW060330R9FK
R45, R46 2 0.04Ω ±1% Resistor (1206) Vishay Dale WSL1206R0400F
R74-R77 4 75Ω ±5% Resistor (0805) Stackpole Electronics Inc. RMCF0805JT75R0
R101 1 24.9kΩ ±1% Resistor (1206) Vishay Dale CRCW120624K9FK
R105 1 60.4kΩ ±1% Resistor (0603) Vishay Dale CRCW060360K4FK
R107 1 24.9kΩ ±1% Resistor (0603) Vishay Dale CRCW060324K9FK
R108 1 100kΩ ±1% Resistor (0603) Vishay CRCW0603100KFK
R109 1 49.9kΩ ±1% Resistor (0603) Vishay Dale CRCW060349K9FK
RTN, VOUT 2 Banana Jack Connector, Straight, 1Pin
Emerson Network Power 108-0740-001
SW1-SW3 3 Surface Mount Switch SPST, 24V, 0.05A Omron B3FS-1000P
T1 1 Power Transformer, SMT-12 Pulse PA5318NL
T2 1LAN Transformer, Turns Ratio: 1:1, 350µH, 100Khz, SMD, Wurth Elektronik 7490220126
TP1, TP3, TP22 3 Black Test Point;
Dia 0.1Inch Keystone 5000
TP2, TP4 2 Red Test Point; Dia 0.1Inch Keystone 5001
TP7, TP10-TP12, TP17, TP25,
TP111
7 Orange Test Point; Dia 0.1Inch Keystone 5003
TP8, TP9, TP13-TP16, TP19, TP20
8 Blue Test Point; Dia 0.1Inch Keystone 5117
U1 1Powered Device, 802.3af/at/bt compliant, YQFN-16 Maxim MAX5995BETE+
U2, U6-U8 4Phototransistor Optocoupler, SMT Fairchild Semiconductor FOD817ASD
PART QTY DESCRIPTION
U3 1 Current-Mode Pwm Controller, TQFN-16 Maxim MAX5974DETE+
U4 1High Isolation Voltage Sop Photocoupler, SOP-4 Renesas Technology Corp. PS2801-1
U5 1 Adjustable Shunt Regulator, SOT-23 Texas Instruments TL432BIDBZ
-54V, CHASSIS-
GND, GND, J1,
POWER(+), POWER(-), RTN_PAD1, RTN_PAD2,
VOUT_PAD1, VOUT_PAD2
10 WEICO wire, 20Awg, 9020 BUSS
PCB 1 Pcb: MAX5995 Maxim MAX5995
C9, C12 02.2µF ±10%, 100V X7R ceramic capacitor (1206) Murata KRM31KR72A225KH01
C16, C17 0 Capacitor; Smt (1210); Open; Ipc Maximum Land Pattern N/A N/A
C18 00.1µF ±10%, 25V X5R ceramic capacitor (0402) Murata GRM155R61E104KA87
C35, C40, C42, C43 0 Capacitor; Smt (0603); Open;
Formfactor N/A N/A
C91 0 Capacitor; Smt (1206); Open; Ipc Maximum Land Pattern N/A N/A
C92 0 Capacitor; Smt (Caseg); Open; Ipc Maximum Land Pattern N/A N/A
D1, D4, D5, D8 0 Schottky Diode, 100V, 2A,
SMB Comchip CDBB2100-G
R12, R39, R47, R48,
R530 Resistor (0603) N/A N/A
R40 0 0Ω Resistor (0603) Vishay Dale CRCW06030000Z0
N101, N102 0 Transistor NPN, 100V, 3.5A, SO-8 On Semiconductor FDS89141
R5, R36 0 75kΩ ±0.1% Resistor (0603) Vishay Dale TNPW060375K0BE
MAX5995B EV Kit Bill of Materials (continued)
Maxim Integrated │ 8www.maximintegrated.com
Evaluates: MAX5995A/B/C/MAX5974DMAX5995B Evaluation Kit
MAX5995B EV Kit Schematics
X X XX
17POW
ER1_
TRD2
-DA
TA1_
TRP2
-7
7490
2201
26
VC2B
5520
252-
455
2025
2-4
FDS3
992
499K
12V
FDS3
992
CDBB
2100
-G
12V
DNI
DNI
DNI
CDBB
2100
-GDN
I
DNI
-54V
DNI
2.2U
F
DNI
DNI
CDBB
2100
-G
BLM
18EG
221S
N1
BLM
18EG
221S
N1
BLM
18EG
221S
N1
VC3B
VC2A
4.7U
H
0.1U
F
CDBB
2100
-G
2.2U
F
VC4B
VC3B
-54V
1000
PF
DF15
01S
DF15
01S
1000
PF
VC2B
CDBB
2100
-G
VC1B
CDBB
2100
-G49
.9K
12V
-54V
49.9
K
VC4A
-54V
-54V
VC3A
1000
PF
BLM
18EG
221S
N1
4.7U
H
4.7U
H
VC3A
VC1A
0.1U
F
0.1U
F75
4.7U
H
VC2A
12V
499K
VC4A
75
499K
49.9
K49
9K
VC4B
4.7U
H
-54V
-54V
CDBB
2100
-G
75
0.1U
F
VC1A
1000
PF
75
CDBB
2100
-G
1000
PF
49.9
K
4.7U
H
4.7U
H
4.7U
H
VC1B
L4
12
L5
12
C16
L8
12
L9
12
L10
12
L11
12
C21
C22
J1_D
ATA
1 2 3 4 5 6 7 8
910
J1_P
OW
ER
1 2 3 4 5 6 8
910
C56
C57
C58
C59
R74
R75
R76
R77
C60
L12
12
L6
12
C24 C3
3
L13
12
L14
12
L15
12
C17
L71
2
CHAS
SIS-
GND
R15
R22
R11 R2
1
D105
AC
D106
AC
D2A
C
D3A
C
N101
78 56
2 41 3
D6A
C
D7A
C
R23
R27
D107
AC
R28
N102
78 56
2 41 3
D108
AC
R38
D1A
C
D4A
C
D5A
C
D8A
C
C12
C9
D17
124
3
D18
124
3
T2
12 3 45 6 78 9 1011 121314 151820 212223 24 19
VC3A
VC1A
VC2A
VC4A
16
G1
S2S1 G2
D2 D2D1 D1G
1
S2S1 G2
D2 D2D1 D1
87654321
SHIE
LD87654321
SHIE
LD
1:1
1:1
1:1
1:1
D2-
D2+
CD2
D1-
D1+
CD1
CX1
X1+
X1-
CX2
X2+
X2-
CX3
X3+
X3-
CX4
X4+
X4-
D4-
D4+
CD4
D3-
D3+
CD3
- +- +
Maxim Integrated │ 9www.maximintegrated.com
Evaluates: MAX5995A/B/C/MAX5974DMAX5995B Evaluation Kit
MAX5995B EV Kit Schematics (continued)
X
17
16151413
12 11 10 9
8765
4321
U1
C18
R9
R40
TP8
TP9
34
21
U7
34
21
U6
34
21
U2
TP25
TP22
R6
TP11
1
C105
TP16
TP15
TP14
TP13
GND -54V
C AD101
C101
R101
J1
R108
POW
ER(-)C
AD1
03
POW
ER(+
)R1
09
TP20
TP19
34
21
U8
R107
R44
CA
LED
R105
4321
SW3
4321
SW2
4321
SW1
R104
R102
TP17
TP12
TP11
TP10
TP7
0
DNI
0
60.4
K
DNI
0.1U
F0
S210
0.1U
F
24.9
K
FOD8
17AS
D
-54V
0
-54V
-54V
-54V
100K
FOD8
17AS
D
FOD8
17AS
D
FOD8
17AS
D
-54V
OUT
49.9
K
PG
-54V
115
58V
0.06
8UF
30.9
24.9
K
LTST
-C15
0GKT
MAX
5995
BETE
+
43
21
EP
ULPVVK
SLLED
CLSA
MEC PG
WAD
RTNRTN
VSS
CLSB
NCVDD
DET
VSS43
21
43
21
Maxim Integrated │ 10www.maximintegrated.com
Evaluates: MAX5995A/B/C/MAX5974DMAX5995B Evaluation Kit
MAX5995B EV Kit Schematics (continued)
X
121110 987
65 4321
T1
TP4
TP3
R41
C35
3
2
1
L3
32
41
U4
R47
R39 R4
8
TP1
VOUT
TP2
RTN
21
C26
C43
C42
C93
C34
C30
C29
C28
R25
R33
C41 R3
5
R32
C31
C32
R34
R37
R30
C40
R31
1
2 3
U5
2 3
1
Q2
R36
C A
D9
C23
C27
321
4
8765
N9
CA
D20
C A
D10
C A
D15
R43
R42
R24
R26
C25
R29
C A
D16 321
4
8765
N11
C14
C19
R12
321
4
8765
N12
R13
321
48765
N7
C13
CA
D12
21
L1
CA
D13
C8
21
L2
C91
C7
21
C38
21
C92
C1
R10
16 31011
13 746
17
14 1 215
8 9 512
U3
R54
CA
D14
C10
C A
D11
R20
R19
R8
C45
C A
D19
R46
R45
R16
C36
R17
C11
R18
C5C3
9
C15
32
1
Q1
C6 R1
R4 C2R3
R2
C3
R53
R5 C4
R7
R79
75K
75K
VCC
-54V
OUT
VOUT
PS28
01-1
PA53
18NL
1000
UH
42.2
K
0.04
DNI
T1_1
2-5
4VO
UT
RTN
VCC
1UF
DNI
0.04
7UF
VCC
100U
F
DNI
0.1U
F22
UF
0.1U
F0.
1UF
200
FB
FB
-54V
OUT
100P
F
3.6K
4.7U
H
T1_8
T1_8
3
N11_
GT1
_12
2.2U
F2.
2UF
1UF
DNI
0.1U
F
DNI
DNI
13K
PG
220P
F
51K
-54V
OUT
2.2U
F
10K
2200
PF
2K
200
30K
0
10K
22UF
108-
0740
-001
108-
0740
-001
VOUT
3
0
100P
F
3
N11_
G
10
3.3K
33UF
-54V
OUT
0.01
UF
10K
1K
22UF OPE
N
0.01
UF31
6K100K
0.04
7UF
0.04
7UF
0.04
7UF
200K
4700
PF
1.5K
1K
VOUT
510
MAX
5974
DETE
+
0.04
DNI
22UF
DNI
200
DNI
DNI
RTN
22UF
2.2U
H
VCC
-54V
OUT
3
100P
F DNI
VCC
100P
F
120K
10K
2200
PF
RTN
-54V
OUT
SD
G
S
D
G
SD G
SD
G
+
+
EP
SSDCLM
P
ENINAU
XDRV
NDRV
PGNDCS
CSSC
GND
FB
COM
PFF
B
RTDITH
ER/S
YNC
DT
B
EC
321
127
610 9
45
118
NC
2
1
+
E
BC
Maxim Integrated │ 11www.maximintegrated.com
Evaluates: MAX5995A/B/C/MAX5974DMAX5995B Evaluation Kit
MAX5995 EV—Top Silkscreen
MAX5995B EV Kit PCB Layout Diagrams
1.0’’
Maxim Integrated │ 12www.maximintegrated.com
Evaluates: MAX5995A/B/C/MAX5974DMAX5995B Evaluation Kit
MAX5995 EV—Top View
MAX5995B EV Kit PCB Layout Diagrams (continued)
1.0’’
Maxim Integrated │ 13www.maximintegrated.com
Evaluates: MAX5995A/B/C/MAX5974DMAX5995B Evaluation Kit
MAX5995 EV—Level GND
MAX5995B EV Kit PCB Layout Diagrams (continued)
1.0’’
Maxim Integrated │ 14www.maximintegrated.com
Evaluates: MAX5995A/B/C/MAX5974DMAX5995B Evaluation Kit
MAX5995 EV—Level PWR
MAX5995B EV Kit PCB Layout Diagrams (continued)
1.0’’
Maxim Integrated │ 15www.maximintegrated.com
Evaluates: MAX5995A/B/C/MAX5974DMAX5995B Evaluation Kit
MAX5995 EV—Bottom View
MAX5995B EV Kit PCB Layout Diagrams (continued)
1.0’’
Maxim Integrated │ 16www.maximintegrated.com
Evaluates: MAX5995A/B/C/MAX5974DMAX5995B Evaluation Kit
MAX5995 EV—Bottom Silkscreen
MAX5995B EV Kit PCB Layout Diagrams (continued)
1.0’’
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2018 Maxim Integrated Products, Inc. │ 17
Evaluates: MAX5995A/B/C/MAX5974DMAX5995B Evaluation Kit
REVISION NUMBER
REVISION DATE DESCRIPTION PAGES
CHANGED
0 11/18 Initial release —
Revision History
For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.