MAX5971BEVKIT+ Maxim Integrated, MAX5971BEVKIT+ Datasheet - Page 10

• Manufacturer Part Number: MAX5971BEVKIT+
• Description: Power Management IC Development Tools
• Manufacturer: Maxim Integrated
• Series: MAX5971r

Specifications of MAX5971BEVKIT+

• Rohs: yes

Figure 4. Advanced User Interface Window (2-Wire Interface Tab)
PCB pads. A separate +3.3V power supply capable of
supplying 35mA is also required for the IC’s optically iso-
lated I
isolated USB interface circuit is not used. A MAX6765
linear regulator (U2) provides the required +3.3V for the
optical isolation at the PSE side.
The IC controls the -54V DC power to the output port by
regulating the port’s current. The current is fed to the
J2 Ethernet output port’s RJ45 output module. An IEEE
802.3af/at-compliant PD connects to the Ethernet out-
put port (J2) on the EV kit. The PD can be located up
to 350ft from the EV kit when connected with a twisted
4-pair Ethernet cable. The 10/100/1000BASE-TX mag-
netic module (J2) is decoupled to the EV kit’s chassis
ground internally. The EV kit’s isolated chassis ground
(Chassis_GND) PCB pad connects to the network system
ground. Note that the 10/100/1000BASE-TX magnetic
output module RJ45 jack (J2) is rated for up to 700mA of
2
C-compatible 2-wire interface when the optically
________________________________________________________________ Maxim Integrated Products 10
current. See the 35W or More Power Operation Without an
Ethernet Connection section for operation at or above 35W.
The EV kit features configurable operational modes,
PD detection (including legacy PD detection), PD
classification, overcurrent protection, current foldback,
undervoltage/overvoltage protection (+28.5V, +62.5V
(typ) (GND - V
monitoring, high-power Class 5 mode operation, and
port current information through the I
Class 5 overcurrent and current-limit protection can be
reconfigured through jumpers or can be programmed
through the software.
The IC starts up in automatic operation mode and
pushbutton switch SW1 can be used to reset the IC or
enter shutdown mode. Semiautomatic and manual modes
can only be accessed through their respective register
using the software’s high-level Configuration window.
Evaluates: MAX5971B
EE
)), respectively), AC-/DC-disconnect
2
C interface. The