AN4402 datasheet(34/39 Pages) STMICROELECTRONICS

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Glossary

AN4402

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DocID025557 Rev 1

Appendix B

Glossary

Table 15. Glossary

Abbreviation

Description

VBAT

Battery voltage

VDS

MOSFET drain-source voltage

MOSFET source voltage

VZENER_LS

Zener voltage of the gate-drain clamp

VZENER_HS

Zener voltage of the gate-source clamp

VCL_LS

Clamping voltage when the gate-drain clamp is active

VCL_HS

Clamping voltage when the gate-source clamp is active

Sign convention : VCL_HS > 0

Typical diode forward voltage

VGS_TH

MOSFET gate-source threshold voltage

Inductance

Voltage across the inductor

Inductor DC resistance

VRL

Voltage across RL

Resistor in parallel to the inductive load

VRP

Voltage across RP

Current through RP

Current through the inductor

IL0

Inductor current right before the turn-off phase: IL0 = IL(t=0)

EDEMAG_LS

Demagnetization energy of a low-side: dissipated energy in the low-side

EDEMAG1_HS

Demagnetization energy of a high-side when VBAT ≤ VCL_LS - VCL_HS

EDEMAG2_HS

Demagnetization energy of a high-side when VBAT ≥ VCL_LS - VCL_HS

tDEMAG_LS

Demagnetization time of a low-side

tDEMAG1_HS

Demagnetization time of a high-side when VBAT ≤ VCL_LS - VCL_HS

tDEMAG2_HS

Demagnetization time of a high-side when VBAT ≥ VCL_LS - VCL_HS

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