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See Technical Specifications

TPS23755RJJR +BOM

IEEE 802.3at PoE PD with no-opto flyback DC-DC controller

Manufacturer:

TI
Mfr.Part #:

TPS23755RJJR
Datasheet:

TPS23755RJJR Datasheet (PDF)
Vin (min) (V):

10.2
Vin (max) (V):

57
PoE Current Limit (min) (mA):

405
PoE Inrush Limit (mA) (typ) (A):

0.14
EDA/CAD Models:

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TPS23755RJJR General Description

With secondary auxiliary power detect capability, the TPS23755 prioritizes secondary side power sources, ensuring seamless transitions between different power inputs without compromising efficiency or thermal performance. The internal soft-start, slope compensation, and blanking features of the DC-DC controller further enhance its versatility, making it suitable for non-isolated applications and supporting buck topology configurations as well

Key Features

High-efficiency operation with up to 98% conversion rate
Simplified startup sequencing and soft-start control
Compact design with reduced board space requirements
Pulse-frequency modulation (PFM) for improved EMI performance
Synchronized operation for multiple converters in a system
Fault detection and correction with self-monitoring capabilities

Specifications

Vin (min) (V)	10.2	Vin (max) (V)	57
PoE current limit (min) (mA)	405	PoE inrush limit (mA) (typ) (A)	0.14
rDS(on) per FET (typ) (mΩ)	360	PoE standards supported	802.3at Type 1 (802.3af)
PD power level	13W	DC/DC control	PD and DC/DC
Fault response	Auto Retry	Features	Advanced startup, Error amplifier, Integrated Switching FET, Primary-side regulation, Secondary-side adapter priority, Spread-spectrum frequency dithering, Thermal shutdown
Operating temperature range (°C)	-40 to 125	Rating	Catalog