SI9978集成電路（IC）的柵極驅(qū)動器規(guī)格書PDF中文資料

SI9978屬于集成電路（IC）的柵極驅(qū)動器。由威世科技半導(dǎo)體制造生產(chǎn)的SI9978柵極驅(qū)動器柵極驅(qū)動器電源管理集成電路 (PMIC) 可用于提供隔離、放大、參考位移、自舉或其他必要功能，這些功能可將來自電源轉(zhuǎn)換應(yīng)用中控制設(shè)備的信號連接到電源被控制通過的半導(dǎo)體設(shè)備（通常為 FET 或 IGBT）。任何特定設(shè)備提供的確切功能各不相同，但與它適合驅(qū)動的半導(dǎo)體配置相關(guān)。

FEATURES

H-Bridge or Dual Half-Bridge Operation

20- to 40-V Supply

Static (dc) Operation

Cross-Conduction Protected

Current Limit

Undervoltage Lockout

ESD Protected

Fault Output

DESCRIPTION

The Si9978 is an integrated driver for an n-channel MOSFET

H-bridge. The mode control allows operation as either a full

H-bridge driver or as two independent half-bridges. The

DIR/PWM input configuration allows easy implementation of

either sign/magnitude or anti-phase PWM drive schemes for

full H-bridges. Schmitt triggers on the inputs provide logic

signal compatibility and hysteresis for increased noise

immunity. An internal low-voltage regulator allows the device

to be powered directly from a system supply of 20 to 40 volts.

All n-channel gates are driven directly from low-impedance

outputs. The addition of one external capacitor per half-bridge

allows internal circuitry to level shift both the power supply and

logic signal for the high-side n-channel gate drives. Internal

charge pumps replace leakage current lost in the high-side

driver circuits to provide “static” (dc) operation in any output

condition. Protection features include an undervoltage

lockout, cross-conduction prevention logic, and overcurrent

monitors.

The Si9978 is available in both standard and lead (Pb)-free,

24-pin wide-body SOIC (surface mount) packages, specified

to operate over the industrial (?40 to +85 C) temperature

range.