uP9511

7

uP9511-DS-C3100, Feb. 2016

www.upi-semi.com

()

6

.

0

||

10

_

+

×

⎟⎟

⎟

⎟

⎠

⎞

⎜⎜

⎜

⎜

⎝

⎛

×

=

×

=

IMON

SUM

DC

OUT

BOT

TOP

Hys

PROGx

R

R

N

R

I

R

R

uA

V

Where R

pin, and R

GND.

If V

< V

< V

< V

V

keeps all-of-phase interleaved operation. When setting

PROG1, PROG2, PROG3 and PROG4, always keep

V

lead to unknown status and should be avoided. Short

the PROG1, PROG2, PROG3 and PROG4 to GND to

disable the auto-phase mode.

Cold Boot and Warm Boot

The uP9511 features programmable operation phase

number of Cold Boot Mode and Warm Boot Mode. When

PSI=Low and uP9511P first boots up (first time of 5VCC

and EN goes high), controller will enter to Cold Boot Mode.

Except the first boot up, when PSI=Low state and controller

power up by EN control, then uP9511 will enter to Warm

Boot Mode. Connect LPC pin to 5VCC with a voltage divider

(Figure 3) to set the operation phase number of Cold Boot

Mode and Warm Boot Mode. Figure 4 shows all the power

states of uP9511 under each combination of 5VCC/EN/

PSI/VID signal. Table 3 shows the recommended resistance

of the voltage divider.

LPC

Low Phase

Mode

5VCC

R1

R2

Figure 3. Circuit of LPC Setting

Functional Description

Table 3. Recommended resistance of Cold Boot mode and Warm Boot mode

V

C

P

L

f

o

%

=

C

C

V

5

e

s

a

h

P

t

o

o

B

d

l

o

C

t

n

u

o

C

k

(

t

n

u

o

C

e

s

a

h

P

t

o

o

B

m

r

a

W

Ω)

e

s

a

h

p

-

1e

s

a

h

p

-

2e

s

a

h

p

-

3e

s

a

h

p

-

4e

s

a

h

p

-

5

1

R2

R1

R2

R1

R2

R1

R2

R1

R2

R

%

3

6

.

0

4e

s

a

h

p

-

12

9

.

47

3

.

31

6

.

4

24

8

.

6

13

.

4

42

3

.

0

34

8

.

3

73

5

.

0

57

6

.

7

4

16

0

.

1

0

1

%

8

8

.

6

4e

s

a

h

p

-

27

2

.

47

7

.

33

3

.

1

23

8

.

8

14

.

8

39

8

.

3

39

9

.

3

68

4

.

6

59

9

.

7

2

15

9

.

2

1

1

%

3

1

.

3

5e

s

a

h

p

-

36

7

.

37

2

.

42

8

.

8

14

3

.

1

28

8

.

3

34

.

8

37

4

.

6

51

0

.

4

63

9

.

2

1

1

1

0

.

8

2

1

%

8

3

.

9

5e

s

a

h

p

-

47

3

.

32

9

.

44

8

.

6

12

6

.

4

21

3

.

0

31

3

.

4

42

5

.

0

56

8

.

3

74

0

.

1

0

1

1

7

.

7

4

1

%

3

6

.

5

6e

s

a

h

p

-

55

0

.

32

8

.

54

2

.

5

11

.

9

23

4

.

7

27

3

.

2

51

7

.

5

49

2

.

7

82

4

.

1

97

5

.

4

7

1

%

8

8

.

1

7e

s

a

h

p

-

68

7

.

21

1

.

71

9

.

3

16

5

.

5

34

0

.

5

21

0

.

4

64

7

.

1

49

6

.

6

0

17

4

.

3

87

3

.

3

1

2

%

3

1

.

8

7e

s

a

h

p

-

76

5

.

24

1

.

98

.

2

12

7

.

5

44

0

.

3

23

.

2

84

.

8

37

1

.

7

3

18

.

6

75

3

.

4

7

2

%

8

3

.

4

8e

s

a

h

p

-

87

3

.

28

.

2

15

8

.

1

12

0

.

4

63

3

.

1

24

2

.

5

1

15

5

.

5

36

0

.

2

9

11

1

.

1

72

1

.

4

8

3

OFF

Full-Phase

Cold-Boot

OFF

Warm-Boot

Full-Phase

Warm-Boot

OFF

Cold-Boot

Full-Phase

Auto-Phase

5VCC

EN

PSI

VID

High

Tri-state

Low