ASL4501SHN datasheet(34/43 Pages) NXP

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ASL4501SHN

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Product data sheet

Rev. 2 — 10 January 2018

34 of 43

NXP Semiconductors

ASL4501SHN

Four-phase boost converter

[1]

All parameters are guaranteed over the virtual junction temperature range by design. Factory testing uses correlated test conditions to

cover the specified temperature and power supply voltage range.

[2]

VGG refers to both VGG1 and VGG2.

[3]

For a given system with VBAT = 13.5 V, Voutx = 50 V, L = 15 H, Rsense =10m, fsw = 400 kHz, optimized device configuration and

30 W output power per phase, the maximum current deviation will be less than 225 mA from the average value.

[4]

Additional features include protection against load dump transient voltages of up to 60 V and thermal shutdown when the junction

temperature of the ASL4501SHN exceeds 175

C.

V

slope

slope voltage difference

deviation from average slope

voltage value at sense pins;

subtraction of slope

compensation is 10.9 mV, equal

to 10.9 A at 10 m

R

sense and

Rslope setting of 1 k

[3]

8-

Serial peripheral interface inputs; pins SDI, SCLK and CSB

Vth(sw)

switching threshold

voltage

0.3VCC

-0.7VCC

Rpd(int)SCLK

internal pull-down

resistance on pin SCLK



Rpd(int)CSB

internal pull-down

resistance on pin CSB



Rpd(int)SDI

internal pull-down

resistance on pin SDI



Serial peripheral interface data output; pin SDO

VOH

HIGH-level output

voltage

IOH = 4 mA;

VCC = 4.5 V to 5.5 V

VCC  0.4

VOL

LOW-level output voltage IOL = 4 mA;

VCC = 4.5 V to 5.5 V

0.4

ILOZ

OFF-state output

leakage current

VCSB = VCC; VO = 0 V to VCC;

VCC = 4.5 V to 5.5 V

5-

A

Temperature protection

T

junction temperature

variation

measurement provided via

20

+20

C

Tsd(otp)

overtemperature

protection shutdown

temperature

[4] 150

175

200

C

VBAT monitoring

VVBAT

accuracy of voltage

measurement on

pin VBAT

0.035  V

BAT

 0.3555

+0.035

 V

BAT

+0.3555

Table 45.

Static characteristics …continued

Minimum and maximum values are specified for the following conditions: VBAT = 5.5 V to 40 V, VEN = 4.5 V to 5.5 V,

VVCC = 4.5 V to 5.5 V and Tj = 40 C to +175 C[1]. All voltages are defined with respect to ground, positive currents flow into

the IC. Typical values are given at VVIN = 40 V, VEN = 5 V, VVCC = 5 V and Tj =25 C unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

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