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comparator output so that the current spike cannot prematurely retrigger the monostable.

Figure 10. PWM Current Controller Simplified Schematic

Figure 11. Output Current Regulation Waveforms

DRIVERS

+

DEAD TIME

S

Q

R

DRIVERS

+

DEAD TIME

DRIVERS

+

DEAD TIME

OUT3

OUT2

SENSEB

SENSEA

RSENSE

D02IN1380

RCOFF

VREF

OUT1

+

+

-

-

1

µs

5mA

BLANKER

SENSE

COMPARATOR

MONOSTABLE

SET

2.5V

5V

FROM THE

LOW-SIDE

GATE DRIVERS

BLANKING TIME

MONOSTABLE

VS

TO GATE

LOGIC

(0)

(1)

OFF

BC

DD

A

BC

ON

2.5V

0

Slow Decay

Slow Decay

1

SYNCHRONOUS RECTIFICATION

1

5V

D02IN1351

1

1