Contax SW II - REV 4.01 Manual de usuario descargar pdf (Pagina 5)

R2J20702NP Target Specification

REJ03G1782-0401 Rev.4.01 Page 5 of 27

Jun 17, 2010

Pin Description

Pin Name Pin No. Description Remarks

VIN 10 to 20 Input voltage for the buck converter.

SW 9, 21, 40 to 48

Switching node. Connect a choke coil between the

SW pin and dc output node of the converter.

PGND 22 to 39 Ground of the power stage.

Should be externally connected to

SGND.

SGND 6, 52 Ground of the IC chip.

Should be externally connected to

PGND.

VCIN 7 Input voltage for the control circuit. Should be externally connected to VIN.

BOOT 8

Bootstrap voltage pin. A bootstrap capacitor should

be connected between the BOOT and SW pin.

To be supplied +5 V through the

internal SBD.

REG5 5 +5 V logic power-supply output.

Requires decoupling from the GND

plane by a capacitance 0.1 F.

ON/OFF 50 Signal disable pin.

Disabled when ON/OFF pin is in the

low state.

IREF 4 Reference current generator for the IC.

Should be connected via 27 k to the

SGND pin.

CT 55

Timing capacitor pin for the oscillator. This pin has a

select function for operation in slave mode.

If the pin voltage is <1 V or >4 V, the IC

operates in slave mode.

SYNC 49 I/O pin for synchronous operation.

TRK-SS 56 Start-up timing control input.

FB 1 Feedback voltage input for the closed loop.

When IC works as a slave module in

multiphase power supply, FB pin

should connected to REG5 pin.

EO 3 Error amplifier output pin.

Requires connection to an RC circuit

for loop compensation.

Ishare 2 For current-sharing bus.

Simply connect the Ishare pins of all

devices to get balanced current.

RAMP 54

RAMP signal input pin for peak current mode PWM

control.

CS 53 Current output pin of active current sensing circuit.

Appropriate resistance is required

between CS and the GND plane.

DRV5 51

+5.25 V generator output for driving power MOS

FETs.

Requires decoupling from the GND

plane by a capacitance from 0.1 F to

1.0 F.

1 2 3 4 5 6 7 8 9 10 ... 27 28

Comentarios a estos manuales

Sin comentarios

Contax SW II - REV 4.01 Manual de usuario Pagina 5

Comentarios a estos manuales

Relacionado con productos y manuales para Adaptadores E Inversores De Energía Contax SW II - REV 4.01