TPS92311_14 datasheet(9/24 Pages) TI1

Part #	TPS92311

Description	Off-Line Primary Side Sensing Converter with PFC

Download	24 Pages

Scroll/Zoom	100%

Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

Logo

9 / 24 page

VCOMP

VSW

tON

ILED

tOFF

tDLY

VZCD

ILP

ILS

2xtDLY

VZCD-OVP

VZCD-ARM

VZCD-TRIG

VZCD-PEAK

t

TPS92311

www.ti.com

SNVS811B – MAY 2012 – REVISED MAY 2013

The setting of the delay time, tDLY will be described in a separate paragraph. During steady state operation, the

duration of the on-period tON can be determined with two different modes: the Constant On-Time (COT) mode

and the Peak Current Mode (PCM), which are configured by setting the MODE1 and MODE2 pins. For the COT

mode, tON is generated by comparing an internal generated saw-tooth waveform with the voltage on the COMP

pin (VCOMP). Since VCOMP is slow varying, tON is nearly constant within an AC line cycle. For the PCM, the on-

period is terminated when the voltage of the ISNS pin (VISNS) reaches a threshold determined by VCOMP. Since

the instantaneous input voltage (AC voltage) varies, tON varies accordingly within an AC line cycle. The duration

of the off-period (tOFF) is determined by the rate of discharging of the secondary current through the transformer.

Also,

(1)

where n is the turn ratio of LP and LS. Figure 15 shows the typical waveforms in normal operation.

Figure 15. Primary and Secondary Side Current Waveforms

Submit Documentation Feedback

9

Product Folder Links: TPS92311

Similar Part No. - TPS92311_14

Manufacturer	Part #	Datasheet	Description
Texas Instruments	TPS92311	432Kb / 19P	[Old version datasheet] Off-Line Primary Side Sensing Converter with PFC

More results

Similar Description - TPS92311_14

Manufacturer	Part #	Datasheet	Description
Texas Instruments	TPS92311	432Kb / 19P	[Old version datasheet] Off-Line Primary Side Sensing Converter with PFC
	TPS92314	916Kb / 26P	[Old version datasheet] Off-Line Primary Side Sensing Controller with PFC
	TPS92310	429Kb / 19P	[Old version datasheet] Off-Line Primary Side Sensing Controller with PFC
	TPS92314DR	922Kb / 26P	[Old version datasheet] Off-Line Primary Side Sensing Controller with PFC
	TPS92310DGS	865Kb / 23P	[Old version datasheet] TPS92310 Off-Line Primary Side Sensing Controller With PFC
	TPS92315	1Mb / 27P	[Old version datasheet] Off-Line Primary-Side Sensing Controller
Holtek Semiconductor In...	HT7L5600	1Mb / 10P	Primary side regulation off line LED driver with active PFC
Holtek Semiconductor In...	HT7L5610	1Mb / 9P	Primary Side Regulation Off Line LED Driver with Active PFC
STMicroelectronics	HVLED805	456Kb / 29P	Off-line LED driver with primary-sensing
STMicroelectronics	ALTAIR04-900	640Kb / 29P	Off-line all-primary-sensing switching regulator

More results

TPS92311 Datasheet(PDF) 9 Page - Texas Instruments

TPS92311 Datasheet(HTML) 9 Page - Texas Instruments

Similar Part No. - TPS92311_14

Similar Description - TPS92311_14

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Datasheet Download

Link URL