UCC28070A

SLUSAW0 – MARCH 2012

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DESCRIPTION (CONT.)

Like UCC28070, UCC28070A also features multiple innovations including current synthesis and quantized

voltage feed-forward to promote performance enhancements in PF, efficiency, THD, and transient response.

Features including frequency dithering, clock synchronization, and slew rate enhancement further expand the

potential performance enhancements. All protection features in UCC28070 such as output over-voltage

detection, programmable peak-current limit, under-voltage lockout and open-loop protection are available in

UCC28070A as well.

ORDERING INFORMATION

PART NUMBER

PACKAGE

PACKING

UCC28070APW

Plastic, 20-Pin TSSOP (PW)

70-Pc. Tube

UCC28070APWR

Plastic, 20-Pin TSSOP (PW)

2000-Pc. Tape and Reel

ABSOLUTE MAXIMUM RATINGS

(1) (2) (3) (4)

over operating free-air temperature range (unless otherwise noted)

PARAMETER

LIMIT

UNIT

Supply voltage: VCC

22

V

20

mA

Voltage: GDA, GDB

−0.5 to VCC+0.3

V

Gate drive current – continuous: GDA, GDB

+/

− 0.25

A

Gate drive current – pulsed: GDA, GDB

+/

− 0.75

Voltage: DMAX, RDM, RT, CDR, VINAC, VSENSE, SS, VAO, IMO, CSA, CSB,

−0.5 to +7

V

CAOA, CAOB, PKLMT, VREF

Current: RT, DMAX, RDM, RSYNTH

−0.5

mA

Current: VREF, VAO, CAOA, CAOB, IMO

10

−40 to +125

−65 to +150

°C

Lead temperature (10 seconds)

260

(1)

These are stress limits. Stress beyond these limits may cause permanent damage to the device. Functional operation of the device at

these or any conditions beyond those indicated under RECOMMENDED OPERATING CONDITIONS is not implied. Exposure to

absolute maximum rated conditions for extended periods of time may affect device reliability.

(2)

All voltages are with respect to GND.

(3)

All currents are positive into the terminal, negative out of the terminal.

(4)

In normal use, terminals GDA and GDB are connected to an external gate driver and are internally limited in output current.

2

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Product Folder Link(s): UCC28070A