APW7074 datasheet(4/20 Pages) ANPEC

4 / 20 page

Rev. A.2 - Feb., 2006

APW7074

www.anpec.com.tw

Unless otherwise specified, these specifications apply over VCC=12V, and TA =-20~70

°C. Typical values are at

A=25°C.

Electrical Characteristics (Cont.)

APW7074

Symbol

Parameter

Test Conditions

Min

Typ

Max

Unit

POWER-ON RESET

Rising VCC Threshold

9.5

10.0

Falling VCC Threshold

7.5

8.5

Rising VOCSET Threshold

1.3

VOCSET Hysteresis Voltage

0.1

Rising EN threshold Voltage

1.3

EN Hysteresis Voltage

0.1

OSCILLATOR

FOSC

Oscillator Frequency

255

300

345

kHz

VOSC

Ramp Amplitude

(nominal 1.35V to 2.95V)

1.6

Duty

Duty Cycle Range

100

REFERENCE

VREF

Reference Voltage

0.80

Reference Voltage Tolerance

-1

PWM ERROR AMPLIFIER

Gain

Open Loop Gain

RL = 10k, CL = 10pF (Note3)

GBWP Open Loop Bandwidth

RL = 10k, CL = 10pF (Note3)

MHz

Slew Rate

RL = 10k, CL = 10pF (Note3)

V/us

FB Input Current

VFB = 0.8V

0.1

VCOPM COMP High Voltage

5.5

VCOPM COMP Low Voltage

ICOMP COMP Source Current

VCOMP = 2V

ICOMP COMP Sink Current

VCOMP = 2V

GATE DRIVERS

IUGATE Upper Gate Source Current

BOOT = 12V, VUGATE -VPHASE = 2V

2.6

IUGATE Upper Gate Sink Current

BOOT = 12V, VUGATE -VPHASE = 2V

1.05

ILGATE Lower Gate Source Current

PVCC = 12V, VLGATE = 2V

4.9

ILGATE Lower Gate Sink Current

PVCC = 12V, VLGATE = 2V

1.4

RUGATE Upper Gate Source Impedance BOOT = 12V, IUGATE = 0.1A

Ω

RUGATE Upper Gate Sink Impedance

BOOT = 12V, IUGATE = 0.1A

1.6

2.4

Ω

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