GS-D200 datasheet(11/17 Pages) STMICROELECTRONICS

11 / 17 page

11/17

USER NOTES

Supply Voltage

The recommended operating maximum supply

voltage must include the ripple voltage for the Vs

rail, and a 5V

±5% for the Vss line is required.

The two supply voltages must to be correctly se-

quenced to avoid any possible erroneous position-

ing of the power stages. The correct power-up and

power-down sequences are:

Power-up

1) Vss (5V) is applied with Enable = Low

2) Vs (the motor supply voltage)

is applied

3) Enable is brougth High

Power-down 1) Enable is brougth Low

2) Vs is switched off

3) Vss is switched off.

Case Grounding

The module case is internally connected to pin 1

and 13. To obtain additional effective EMI shield,

the PCB area below the module can be used as an

effective sixth side shield.

Thermal Characteristics

The case-to-ambient thermal resistance of the GS-

D modules is 5

°C/W. This produces a 50°C tem-

perature increase of the module surface for 10W of

internal dissipation.

According to ambient temperature and/or to power

dissipation, an additional heatsink or forced venti-

lation may be required. (See derating curves).

Supply Line Impedance

The module has an internal capacitor connected

accross the supply pins (18 and 13) to assure the

circuit stability. This capacitor cannot handle high

values of current ripple, and would be permanently

damaged if the primary energy source impedance

is not adequate.

The use of a low ESR, high ripple current 470

µF

capacitor located as close to the module as possi-

ble is recommended. Suitable units are the SPRA-

GUE type 672D, the SPRAGUE 678D, the RIFA

type PEG 126 or any equivalent unit. When space

is a limitation, a 22

µF ceramic multilayer capacitor

connected across the module input pins must be

used.

Module Protections

The GS-D200 outputs are protected against occa-

sional and permanent short-circuits of the output

pin to the supply voltage. The GS-D200S outputs

are also protected against short circuits to ground

and to another output. When the current exceeds

the maximum value, the output is automatically

disabled.

The GS-D200S protection is of the latching type,

i.e. when an overload condition is detected the

unit outputs are disabled. To restart the opera-

tions it is necessary to disable the unit (pin

11=Low) or to switch off the supply voltage for at

least 100ms.

Motor Connection

The motor is normally quite far from the module and

long cables are needed for connection. The use of

a twisted pair cable with appropriate cross section

for each motor phase is recommended to minimize

DC losses and RFI problems.

Unused Inputs

All the GS-D200 and GS-D200S logic inputs have

an internal pull-up, and they are high when uncon-

nected.

Phase Current Programming

The output current of the GS-D200 is factory set to

1A while the GS-D200S has a standard 2A value.

The phase current value can be changed by con-

necting an appropriate resistor between pin 9 and

ground or Vss (see fig. 14). In the first case the

phase current will decrease, in the latter it will

increase.

The maximum phase current must be limited to 2A

for the GS-D200 and 2.5A for the GS-D200S to

avoid permanent damage to the module.

GS-D200 phase current programming:

>1A

− I

0.993

⋅ I − 1 = kΩ Ri ≥ 8.2kΩ

<1A

− 0.993

⋅ I = kΩ

GS-D200S phase current programming:

>2A

= 10 − 0.33 ⋅ I

0.473

⋅ I − 1 = kΩ Ri ≥ 50 kΩ

<2A

3.03

− 1.43

⋅ I = kΩ

GS-D200/GS-D200S

GS-D200 bảng dữ liệu(PDF) 11 Page - STMicroelectronics

GS-D200 bảng dữ liệu(HTML) 11 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

bảng dữ liệu tải về

Link URL