High Speed, Dual, 2 A MOSFET Driver

ADP3629/ADP3630/ADP3631

Rev. 0

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FEATURES

Industry-standard-compatible pinout

High current drive capability

Precise threshold shutdown comparator

UVLO with hysteresis

Overtemperature warning signal

Overtemperature shutdown

3.3 V-compatible inputs

Rise time and fall time: 10 ns typical at 2.2 nF load

Fast propagation delay

Matched propagation delays between channels

Supply voltage: 9.5 V to 18 V

Dual outputs can be operated in parallel

(ADP3629/ADP3630)

Rated from −40°C to +85°C ambient temperature

8-lead SOIC_N and 8-lead MSOP

APPLICATIONS

AC-to-DC switch mode power supplies

DC-to-DC power supplies

Synchronous rectification

Motor drives

GENERAL DESCRIPTION

The ADP3629/ADP3630/ADP3631 are dual, high current, high

speed drivers, capable of driving two independent N-channel

power MOSFETs. The ADP3629/ADP3630/ADP3631 use the

industry-standard footprint but add high speed switching per-

formance and improved system reliability.

The ADP3629/ADP3630/ADP3631 have an internal temperature

sensor and provide two levels of overtemperature protection: an

overtemperature warning and an overtemperature shutdown at

extreme junction temperatures.

The SD function, generated from a precise internal comparator,

provides fast system enable or shutdown. This feature allows

redundant overvoltage protection, complementing the protec-

tion inside the main controller device, or provides safe system

shutdown in the event of an overtemperature warning.

The wide input voltage range allows the driver to be compatible

with both analog and digital PWM controllers.

Digital power controllers are supplied from a low voltage supply,

and the driver is supplied from a higher voltage supply. The

ADP3629/ADP3630/ADP3631 add UVLO and hysteresis func-

tions, allowing safe startup and shutdown of the higher voltage

supply when used with low voltage digital controllers.

FUNCTIONAL BLOCK DIAGRAM

1

8

2

7

3

6

4

5

OVERTEMPERATURE

PROTECTION

NONINVERTING

INA,

INA

PGND

INB,

INB

SD

OUTA

VDD

OUTB

OTW

INVERTING

NONINVERTING

INVERTING

UVLO

ADP3629/ADP3630/ADP3631

Figure 1.