AN4501 datasheet(40/48 Pages) STMICROELECTRONICS

40 / 48 page

Glossary

AN4501

40/48

DocID026394 Rev 1

CISS

M1 input capacitance

ICOUT, VCOUT

Output capacitor current and voltage

ESRCOUT

ESR output capacitor

VCOUT,ESR

Voltage across ESRCOUT

ICIN, VCIN

Input capacitor current and voltage

ESRCIN

ESR input capacitor

VCIN,ESR

Voltage across ESRCIN

RONM1

Rdson of M1

RONM2

Rdson of M2

RSHUNT

Shunt resistor

RSENSE

Sense resistor

Inductor current ripple ratio

rMAX

Max. allowed inductor current ratio

IOUT

Output current (= LED current)

DCR

Inductor DC resistance

D50

50% duty cycle

VG1

Gate driver voltage

Thermal coefficient of RONM1

PDIODE

Power dissipation of the diode

PM1,SWON

Switching losses of M1 during the switch-on transition

PM1,SWOFF

Switching losses of M1 during the switch-off transition

TAMB

Ambient temperature

PM1,COND

Conduction losses of M1

PM1

Total power losses of M1

Converter’s efficiency

CCM

Continuous conduction mode

DCM

Discontinuous conduction mode

MLCC

Multilayer ceramic capacitor

Table 4. Notations and abbreviations (continued)

Notation

Description

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