UCC24636DBVT datasheet(23/35 Pages) TI1

tên linh kiện	UCC24636DBVT

Giải thích chi tiết về linh kiện	Synchronous Rectifier (SR) Controller

PDF	35 Pages

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nhà sản xuất	TI1 [Texas Instruments]

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OUT

IN(min)

OUT

VPC_EN

OUT

IN(min)

VPC_EN

R21=10k

Nominal V

, maximum power, minimum V

case

-V

×1.1 ×R21

R9=

×1.1

=5 V

=15

=65 V

=0.45 V

R9 = 179 k

VOUT

GND

RPL

COUT

VSEC

IOUT

R21

R22

R11

R23

UCC24636

VPC

DRV

GND

TBLK

VSC

VDD

UCC24636

www.ti.com

SLUSCG2A – MARCH 2016 – REVISED MARCH 2016

Product Folder Links: UCC24636

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9.2.3 Calculation of Component Values

Figure 19. UCC24636 Circuit Design

For ease of understanding, Figure 19 is a modified version of Figure 15 where the component reference

designators are the same as the schematic drawing of Figure 18.

9.2.3.1 VPC Input

For designs operating in constant current (CC) with low VOUT, there are two cases to examine. At maximum

power, VIN(MIN) will be lower but VOUT is nominal. In constant current operation, VOUT is the minimum but VIN(MIN)

will be higher. Determine R9 for both conditions, and choose the lowest value.

For minimal power dissipation, select:

(8)

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