HCV1707R1-R48-R datasheet(23/41 Pages) VICOR

23 / 41 page

Cool-Power® ZVS Switching Regulators

Rev 1.5

Page 23 of 41

03/2018

PI352x-00

PI3526-00 (12VOUT) Electrical Characteristics (Cont.)

Specifications apply for –40°C < TINT < 120°C, VIN = 48V, EN = High, unless otherwise noted.

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Timing

Switching Frequency

[f] While in DCM operating mode only, SYNCI grounded

658

700

742

kHz

Fault Restart Delay

tFR_DLY

Synchronization Input (SYNCI)

Synchronization Frequency Range

fSYNCI

–50% and +10% relative to set switching frequency (fS),

while in DCM operating mode only. [c] [f]

350

770

kHz

SYNCI Threshold

VSYNCI

2.5

Synchronization Output (SYNCO)

SYNCO High

VSYNCO_HI

Source 1mA

4.5

SYNCO Low

VSYNCO_LO

Sink 1mA

0.5

SYNCO Rise Time

tSYNCO_RT

20pF load

SYNCO Fall Time

tSYNCO_FT

20pF load

Soft Start, Tracking and Error Amplifier

TRK Active Range (Nominal)

VTRK

1.4

TRK Enable Threshold

VTRK_OV

TRK to EAIN Offset

VEAIN_OV

110

Charge Current (Soft Start)

ITRK

µA

Discharge Current (Fault)

ITRK_DIS

VTRK = 0.5V

8.7

TRK Capacitance, Internal

CTRK_INT

Soft-Start Time

tSS

CTRK_EXT = 0µF

0.6

0.94

1.6

Error Amplifier Trans-Conductance

GMEAO

[b]

7.6

PSM Skip Threshold

PSMSKIP

[b]

0.8

EAIN Capacitance, Internal

CEAIN-INT

Error Amplifier Output Impedance

ROUT

[b]

MΩ

Internal Compensation Capacitor

CHF

[b]

Internal Compensation Resistor

RZI

[b]

kΩ

[a] All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI352x evaluation board with 3 x 3"

dimensions and 4 layer, 2oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value.

[b] Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control.

Output voltage is determined by an external feedback divider ratio.

[c] Output current capability may be limited and other performance may vary from noted electrical characteristics when VOUT is not set to nominal.

[d] Refer to Output Ripple plots.

[e] Refer to Load Current vs. Ambient Temperature curves.

[f] Refer to Switching Frequency vs. Load current curves.

[g] Contact factory applications for array derating and layout best practices to minimize sharing errors.

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