L9960 datasheet(40/95 Pages) STMICROELECTRONICS

tên linh kiện	L9960

Giải thích chi tiết về linh kiện	Automotive Single/Dual H-Bridge, SPI programmable DC Brushed Motor Driver

PDF	95 Pages

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nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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40 / 95 page

Functional description

L9960, L9960T

40/95

DS11115 Rev 10

Figure 18. 4 cases of high-side/low-side activation (IN1/IN2 mode)

An active freewheeling is automatically set, at the end of the dead time, which means that

the power transistor in parallel to the internal freewheeling diode is switched on during

freewheeling phase.

This should lead to a power dissipation decrease when driving inductive loads.

Warning:

In case of current limitation event in IN1/IN2 mode, the

freewheeling is automatically set back to LS drivers.

It is advised against selecting the HS recirculation in IN1/IN2

mode as L9960 is not safely protected against external failures

(i.e SCG).

For IN1/IN2 mode it is advised to recirculate (active

freewheeling) on low-side drivers only.

For PWM mode the recirculation is set by design on LS

drivers only.

VPS

Forward, T1 and T4 active

IN1 = 1 , IN2 = 0

LS Freewheeling via T3 to T4

IN1 = 0 , IN2 = 0

HS Freewheeling via T2 to T1

IN1 = 1 , IN2 = 1

Reverse , T2 and T3 active

IN1 = 0 , IN2 =1

VPS

GAPGPS02335

Note: Please refer to warning message.

L9960 bảng dữ liệu(PDF) 40 Page - STMicroelectronics