–Vsens-rail3

10 kW

0.1 mF

FCX491A

+3.3 V

UCD9240RGC

53

52

51

50

57

56

55

54

3

59

60

61

62

63

1

2

EAp1

EAn2

EAp2

EAn1

EAn4

EAp4

EAn3

EAp3

AddrSens1

AddrSens0

CS-1A(COMP1)

CS-2A(COMP2)

CS-2B

CS-1B

CS-4A(COMP4)

CS-3A(COMP3)

+Vsens-rail1

–Vsens-rail2

+Vsens-rail2

–Vsens-rail1

–Vsens-rail4

+Vsens-rail4

+Vsens-rail3

CS-rail2B

CS-rail1A

CS-rail4A

CS-rail3A

CS-rail2A

CS-rail1B

6

5

4

Temp

Vtrack

Vin/Iin

16

15

PMBus-Data

PMBus-Clk

39

28

27

PowerGood (TMS)

PMBus-Ctrl

PMBus-Alert

+3.3 V

4.7 mF

20

19

18

17

12

11

23

21

DPWM-1A

15 kW

0.1 mF

34

25

14

13

24

22

35

33

30

29

32

31

42

FAN-Tach

36

41

FAN-PWM

SyncOut

37

38

SyncIn

10

40

DPWM-2B

DPWM-2A

DPWM-1B

FAULT-1B

FAULT-1A

DPWM-4A

DPWM-3A

FAULT-2A

FAULT-4A

FAULT-3A

FAULT-2B

SRE-1B

SRE-1A

SRE-2B

SRE-2A

SRE-4A

SRE-3A

TMUX-1

TMUX-0

TMUX-2

FAN-TACH

FAN-PWM

SYNC-OUT

SYNC-IN

RCR

TRST

9

RESET

10 kW

10 kW

V

IN

10 kW

14

13

A1

A0

1

12

15

A4

A3

A2

4

2

A7

A6

A5

5

8

11

10

6

S2

Com

S0

S1

EN

3

Temp-rail1B

Temp-rail1A

Temp-rail2B

Temp-rail2A

Temp-rail4A

Temp-rail3A

CD74HC4051

+3.3 V

PTD08A010W

FAULT

PWM

SRE

INH

IOUT

PTD08A010W

FAULT

PWM

SRE

INH

IOUT

Commutation

UCD7230 Driver

Logic

FAULT

PWM

SRE

INH

IOUT

Temp Sensor

PTD08A020W

Temp-rail1A

INH

+3.3 V

V

IN

V

O

PTD08A020W

FAULT

PWM

SRE

INH

IOUT

Temp-rail1B

CS-rail1A

+Vsens-rail1

–Vsens-rail1

Temp-rail2A

Temp-rail2B

+Vsens-rail2

–Vsens-rail2

CS-rail1B

CS-rail2A

CS-rail2B

PTD08A010W

FAULT

PWM

SRE

INH

IOUT

PTD08A010W

FAULT

PWM

SRE

INH

IOUT

Temp-rail3A

Temp-rail4A

+Vsens-rail4

–Vsens-rail4

CS-rail3A

CS-rail4A

+Vsens-rail3

–Vsens-rail3

82.5 kW

TEMP

VOUT

GND

VBIAS

TEMP

GND

TEMP

VOUT

GND

TEMP

VOUT

GND

TEMP

VOUT

GND

TEMP

VOUT

GND

VBIAS

VIN

VIN

VBIAS

VIN

VIN

VBIAS

VIN

VIN

VBIAS

VIN

VIN

VBIAS

VIN

VIN

[A]

UDG-08035

PTD08A020W

SLTS286F – MAY 2007 – REVISED FEBRUARY 2010

www.ti.com

APPLICATION INFORMATION

DIgital Power

Figure 19. Typical Application Schematic

Figure 19 shows the UCD9240 power supply controller working in a system which requires the regulation of four

independent power supplies. The loop for each power supply is created by the respective voltage outputs feeding

into the Error ADC differential inputs, and completed by DPWM outputs feeding into the UCD7230 drivers which

are shown on the PTD08A010W and PTD08A020W modules.

10

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