Copyright © 2016

Microsemi

Page 11

Rev. 1.4, July 2017

CPG

– PoE BU

One Enterprise Aliso Viejo, CA 92656 USA

PD70211

PD Controller with Switching Regulator for

AF/AT/UPOE/HDBaseT/4-pair PoE Applications

Operating Ratings (PWM Section)

Performance is generally guaranteed over this range as further detailed below under Electrical

Characteristics. Voltages are with respect to IC ground.

Min

Max

Units

VCC

7.8

20

V

Fsw (adjustable frequency range)

100

500

kHz

Max Duty Cycle

44.5

%

fsw_synch (synchronization frequency range)

200

1000

kHz

Thermal Properties

Thermal Resistance

Min

Typ

Max

Units

θJA

22.3

°C/W

θJP

3

°C/W

θJC

4

°C/W

Note: The Jx numbers assume no forced airflow. Junction Temperature is calculated using TJ = TA + (PD x JA). In particular, θJA is a

function of the PCB construction. The stated number above is for a four-layer board in accordance with JESD-51 (JEDEC).

Electrical Characteristics (Front-End Section)

Unless otherwise specified under conditions, the Min and Max ratings stated below apply over the entire

specified operating ratings of the device. Typ values stated, are either by design or by production testing at

25°C ambient. Voltages are with respect to IC ground (VPN_IN).

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Input Voltage

IIN

IC input current with

ICLASS off

VPP=55V

1

3

mA

Detection phase

VDET

Detection range

1.1

10.1

V

RDET_TH

RDET disconnect

threshold

10.1

12.8

V

RDS_DET_ON

On-resistance of internal

FET during detection

50

Ω