TPD7203F_07 datasheet(16/19 Pages) TOSHIBA

16 / 19 page

TPD7203F

2006-10-31

Method for Selecting External Parts

No.

Pin Name

Type

Recommended Value /

Recommended Product

Description

COSC

Capacitor

1500 pF (ceramic)

Sets the charge pump oscillation frequency.

ROSC

Resistor

100 k

Sets the charge pump oscillation frequency.

CP1

CP2

Capacitor

0.47

μF

(laminated ceramic )

Capacitor for the charge pump: The greater this capa-

citance, the larger the charging current to the capa-

citor and the greater the loss in the IC.

CPV

Capacitor

μF (laminated ceramic) and

μF (aluminum electrolytic )

connected in parallel

The greater this capacitance, the larger the current

supply capacity of the charge pump (CPV pin) but the

greater the loss in the IC. Take care not to exceed the

allowable loss.

CP1

CP2

CPV

High-speed

iode

trr = 100 ns (max)

CRH01 (trr = 35 ns max)

recommended

Diode for the charge pump. An electric charge equal

to the diode's Qrr component goes out of the capa-

citor's

charged

electricity.

Therefore,

use

high-speed diode. Diode for the charge pump： An

electric charge equal to the Qrr component of the

diode goes out of the electrical charge of the

capacitor. Therefore use a high-speed diode.

Resistor

⎯

Gate resistor for external power MOSFET. Choose

the optimum value by considering the switching loss

and EMI of the power MOSFET.

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