DS_Q54SG12050_09092016

3

TECHNICAL SPECIFICATIONS

PARAMETER

NOTES and CONDITIONS

Q54SG12050

Min.

Typ.

Max.

Units

PMBus Signal Interface Characteristics

C2, Data, SMBAlert, Clock pin

0

0.8

V

C2, Data, SMBAlert, Clock pin

2.1

3.3

V

0.4

V

2.6

V

PMBus Operating Frequency Range

100

400

KHz

PMBus Monitoring CHARACTERISTICS

Output Current Reading Accuracy

Io=50% ~ 100% of Io, max;

-5

+5

%

Io=5% ~ 50% of Io, max;

-2

+2

A

Output Voltage Reading Accuracy

-2

+2

%

Input Voltage Reading Accuracy

-4

+4

%

Temperature Reading Accuracy

-5

+5

℃

GENERAL SPECIFICATIONS

MTBF

Io=80% of Io, max; 300LFM; Ta=25°C

1.56

M hours

Weight

66.5

grams

Over-Temperature Shutdown

(With heat spreader)

Refer to Figure 19 for Hot spot 1 location

(54Vin,80% Io, 200LFM,Airflow from Vin- to Vin+)

112

°C

Over-Temperature Shutdown

(With 0.5

” height heat sink)

Refer to Figure 22 for Hot spot 2 location

(54Vin,80% Io, 200LFM,Airflow from Vin- to Vin+)

103

°C

Over-Temperature Shutdown

( NTC resistor )

125

°C

N

ote: Please attach thermocouple on NTC resistor to test OTP function, the hot spots’ temperature is just for reference.

PIN DEFINATION

Pin#

Name

Function

Pin#

Name

Function

1

VIN(+)

7

C2

Secondary on/off control pin; The default configuration is set to ignore this input. And such pin can be

reconfigured by the PMBus Interface.

2

ON/OFF Primary on/off control pin

8

Sig_Gnd

Signal ground

3

VIN(-)

9

Data

PMBus data line

4

VOUT(-)

10

SMBAlert PMBus SMBAlert line

5

Trim

Trim pin

11

Clock

PMBus clock line

6

VOUT(+)

12

Addr1

ADDR1 pin sets the high order digit of the address.

13

Addr0

ADDR0 pin sets the low order digit of the address.

SIMPLIFIED APPLICATION CIRCUIT

Vout(+)

Trim

Addr0

Addr1

Vout(-)

Vin(+)

Vin(-)

On/off

Delta DC/DC

Module

EMI filter

Reverse

polarity

Protection

Fuse

Load

Input

Source

System MCU

CLOCK DATA

C2

SMB

-ALERT

CLK

DATA

CTRL

ALERT

On/off control

Vout(+)

Trim

Addr0

Addr1

Vout(-)

Vin(+)

Vin(-)

On/off

Delta DC/DC

Module

EMI filter

Reverse

polarity

Protection

Fuse

Load

Input

Source

System MCU

CLOCK DATA

C2

SMB

-ALERT

CLK

DATA

CTRL

ALERT

On/off control