R2A20124ASP-W0 View Datasheet(PDF) - Renesas Electronics

Part Name

Description

Manufacturer

R2A20124ASP-W0

Synchronous Phase Shift Full-Bridge Control IC Series

Renesas Electronics 

R2A20124AFP/R2A20124ASP

Preliminary

Electrical Characteristics (cont.)

(Ta = 25°C, Vcc = 12 V, RT = 180 k, Rdelay = 51 k, Rramp-slp = 27 k, unless otherwise specified.)

Item

Symbol

Min

Typ

Max Unit

Test Conditions

OVER CURRENT PROTECTION: R2A20124AFP/ASP

Pulse-by-pulse current limit

threshold

Delay to OUT pins *1

VCS-PP

Tpd-cs

1.26

1.4

1.54

V

SEC-CONT = 0.3 V (AFP)

—

100

200

ns CS = 0 V to 1.57 V,

SEC-CONT = 0.3 V (AFP)

CS sink current

OUTPUT: R2A20124AFP/ASP

ISINK-CS

2

5

—

mA CS = 0.15 V, COMP = 0 V

High voltage

Low voltage

Rise time

VOH-OUT

VOL-OUT

tr

11.5 11.9

—

—

0.05

0.2

—

30

100

V IOUT = –2 mA

V IOUT = 2 mA

ns COUT = 100 pF

Fall time

tf

—

Timing offset *2

TD4

—

POWER INFORMATION AMPLIFIER: R2A20124AFP

30

100

ns COUT = 100 pF

20

140

ns

Tranceconductance

gm

15

20

25

s CS = 0.4 V

SECONDARY CONTROL: R2A20124AFP

Forced synchronous rectification Von-sec-cont 4.6

—

—

V

CS = 1 V

on voltage

Forced synchronous rectification Voff-sec-cont —

off voltage

—

0.4

V

CS = 0 V

Input bias current-1

Input bias current-2

Current hysteresis

Notes: 1. Tpd-cs is defined as;

1.57 V

CS

0

ISEC-CONT1

ISEC-CONT2

dISEC-CONT

50%

5

10

20

A CS = 0 V, SEC-CONT = 2.1 V

10

20

40

A CS = 1 V, SEC-CONT = 2.1 V

5

10

20

A

OUT-C/D

50%

2. TD4 is defined as;

OUT-D

50%

Tpd-cs

OUT-C

50%

OUT-E

50%

TD4

OUT-F

50%

TD4

R03DS0031EJ0300 Rev.3.00

Mar 11, 2011

Page 10 of 12

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