MAX17595_13 datasheet(4/23 Pages) MAXIM

Part #	MAX17595

Description	Peak-Current-Mode Controllers for Flyback and Boost Regulators

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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MAX17595/MAX17596/MAX17597

Peak-Current-Mode Controllers for

Flyback and Boost Regulators

4

Maxim Integrated

ELECTRICAL CHARACTERISTICS (continued)

(VIN = 12V (for the MAX17595, bring VIN up to 21V for startup), VCS = VSLOPE = VDITHER = VFB = VOVI = VSGND = VPGND = 0V,

VEN/UVLO = +2V; NDRV, SS, COMP are unconnected, RRT = 25kI, CVIN = 1FF, CVDRV = 1FF, TA = TJ = -40NC to +125NC, unless

otherwise noted. Typical values are at TA = TJ = +25NC.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

SOFT-START (SS)

Soft-Start Charging Current

ISSCH

9

10

11

F

A

SS Bias Voltage

VSS

1.19

1.21

1.23

V

NDRV DRIVER (NDRV)

Pulldown Impedance

RNDRV-N

INDRV (sinking) = 100mA

1.37

3

I

Pullup Impedance

RNDRV-P

INDRV (sourcing) = 50mA

4.26

8.5

I

Peak Sink Current

CNDRV = 10nF

1.5

A

Peak Source Current

CNDRV = 10nF

0.9

A

Fall Time

tNDRV-F

CNDRV = 1nF

10

ns

Rise Time

tNDRV-R

CNDRV = 1nF

20

ns

CURRENT-LIMIT COMPARATOR (CS)

Cycle-by-Cycle Peak

Current-Limit Threshold

VCS-PEAK

290

305

320

mV

Cycle-by-Cycle Runaway

Current-Limit Threshold

VCS-RUN

340

360

380

mV

Current-Sense Leading-

Edge Blanking Time

tCS-BLANK

From NDRV rising

# edge

70

ns

Propagation Delay from

Comparator Input to NDRV

tPDCS

From CS rising (10mV overdrive) to

NDRV falling (excluding leading

edge blanking)

40

ns

Number of Consecutive

Peak- Current-Limit Events

to Hiccup

NHICCUP-P

8

events

Number of Runaway-

Current-Limit Events to

Hiccup

NHICCUP-R

1

event

Overcurrent Hiccup

Timeout

32,768

cycle

Minimum On-Time

tON-MIN

90

130

170

ns

SLOPE COMPENSATION (SLOPE)

Slope Bias Current

ISLOPE

9

10

11

F

A

Slope Resistor Range

25

200

kI

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MAX17595 Datasheet(PDF) 4 Page - Maxim Integrated Products

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