L6207 datasheet(16/23 Pages) STMICROELECTRONICS

16 / 23 page

L6207

16/23

APPLICATION INFORMATION

A typical application using L6207 is shown in Fig. 16. Typical component values for the application are shown

in Table 3. A high quality ceramic capacitor in the range of 100 to 200 nF should be placed between the power

pins (VSA and VSB) and ground near the L6207 to improve the high frequency filtering on the power supply and

reduce high frequency transients generated by the switching. The capacitors connected from the ENA and ENB

inputs to ground set the shut down time for the BrgidgeA and BridgeB respectively when an over current is de-

tected (see Overcurrent Protection). The two current sensing inputs (SENSEA and SENSEB) should be connect-

ed to the sensing resistors with a trace length as short as possible in the layout. The sense resistors should be

non-inductive resistors to minimize the di/dt transients across the resistor. To increase noise immunity, unused

logic pins (except ENA and ENB) are best connected to 5V (High Logic Level) or GND (Low Logic Level) (see

pin description). It is recommended to keep Power Ground and Signal Ground separated on PCB.

Table 2. Component Values for Typical Application

Figure 16. Typical Application

100uF

1N4148

100nF

1N4148

1nF

39K

Ω

1nF

39K

Ω

CBOOT

220nF

RENA

100K

Ω

10nF

RENB

100K

Ω

CENA

5.6nF

100

Ω

CENB

5.6nF

RSENSEA

0.3

Ω

CREFA

68nF

RSENSEB

0.3

Ω

CREFB

68nF

OUT1A

LOADA

LOADB

VREFA

VREFB

OUT2A

GND

RCA

OUT2B

OUT1B

VSA

POWER

GROUND

SIGNAL

GROUND

8-52VDC

VSB

VCP

VBOOT

CBOOT

SENSEA

RSENSEA

IN1A

IN2A

IN1A

IN2A

ENA

ENB

CENB

RENB

RENA

ENA

ENB

VREFA = 0-1V

VREFB = 0-1V

IN2B

IN1B

IN2B

IN1B

SENSEB

RSENSEB

CREFA

CREFB

CENA

RCB

D02IN1343

L6207 数据表(PDF) 16 Page - STMicroelectronics

L6207 数据表(HTML) 16 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

数据表下载