LB11980H Просмотр технического описания (PDF) - SANYO -> Panasonic

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производитель

LB11980H

For VCR Capstan Three-Phase Brushless Motor Driver

SANYO -> Panasonic 

Pin Functions

Pin name

Pin no

FR

6

GND

7

FGIN (-)

8

FGIN (+)

9

FG-OUT

10

CTL

12

LIM

13

FC

UIN+, UIN-

VIN+, VIN-

WIN+, WIN-

VCC

VS

ADJ

14

15, 16

17, 18

19, 20

21

22

23

Rf (PWR)

24

Rf (SNS)

4

FGS

11

UOUT

27

VOUT

28

WOUT

1

GSENSE

5

LB11980H

Functions

Forward/reverse select pin.

This pin voltage determines forward/reverse. (Vth = 1.25V TYP at VCC = 5V)

GND for others than the output transistor.

Minimum potential of output transistor is at Rf pin.

Input pin for the FG amplifier to be used with inverted input.

A feedback resistor is connected between this pin and FG OUT.

Non-inverted input pin for the FG amplifier to be used as differential input.

No bias is applied internally.

FG amplifier output pin.

Resistive load provided internally.

Speed control pin. Control is performed by means of constant current drive which is applied by current feedback from Rf.

Gm = 1.06A/VTYP at Rf = 0.5Ω

Current limiter function control pin.

This pin voltage is capable of varying the output current linearly.

Slope = 0.71A/VTYP at Rf = 0.5Ω

Speed control loop’s frequency characteristics correction pin.

U-phase Hall device input pin; logic “H” presents IN+>IN-

V-phase Hall device input pin; logic “H” presents IN+>IN-

W-phase Hall device input pin; logic “H” presents IN+>IN-

Power supply pin for supplying power to all circuits expect output section in IC; this voltage must be stabilized so as to

eliminate ripple and noise.

Power supply pin for supplying power to output section in IC.

Pin to be used to adjust the torque ripple correction factor externally.

When adjusting the correction factor, apply voltage externally to the ADJ pin through a low impedance.

Increasing the applied voltage decreases the correction factor; lowering the applied voltage increases the correction

factor.

The rate of change, when left open, ranges approximately from 0 to 2 times.

(Approximately VCC/2 is set internally and the input impedance is approximately 5kΩ.)

Output current detection pins. Current feedback is provided to the control blocks by connecting Rf between the pins and

GND. The operation of the lower over-saturation prevention circuit and torque ripple correction circuit depends on the pin

voltage. In particular, since the oversaturation prevention level is set by the pin voltage, decreasing the Rf value

extermely may cause the lower over-saturation prevention to work less efficiently in the large current region. The PWR

pin and SENSE pin must be connected.

FG Schmidt amp output pin, that is pulled up with 4.7kΩ.

U-phase output pin.

V-phase output pin.

W-phase output pin.

(Built-in spark killer diode)

GND sensing pin.

By connecting this pin to GND in the vicinity of the Rf resistor side of the Rf included motor GND wiring, the influence

that the GND common impedance exerts on Rf can be excluded. (Must not be left open.)

No.8798-7/11

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