QLS30 Series – 30A Quarter-Brick DC/DC Converter

48V Input

Data Sheet

1.8V, 1.5V, 1.2V Output

REV. 10/1

Output Specifications

All specifications apply over specified input voltage, output load and temperature range, unless otherwise

noted.

Parameter

Conditions/Description

Min

Nom

Max

Units

Output Voltage Setpoint Accuracy

Vin=Vin.nom, Full Load

-1

1

%Vout

Output Current*

10

100

Line Regulation

0.2

%Vout

Load Regulation

Vin=Vin.nom, 10% to

0.2

%Vout

Total output voltage regulation

Over all input voltage, load,

and temperature conditions

-2

2

%Vout

Remote Sense Headroom

0.5

VDC

Dynamic Regulation

Peak Deviation

Settling Time

50-75% load step change

to 1% error band

6

500

%Vout

µS

Admissible Load Capacitance

20,000

µF

Output Current Limit Threshold**

Vout=0.97Vout.nom

110

140

Switching Frequency

300

kHz

Overvoltage Protection,

Non Latching

Over all input voltage and

load conditions

120

140

%Vout

Trim Range

90

110

%Vout

* At Iout<Iout.min, the output may contain low frequency component that exceeds ripple specifications.

** Overcurrent protection is non-latching with auto recovery.

Feature Specifications

All specifications apply over specified input voltage, output load and temperature range, unless otherwise

noted.

Parameter

Conditions/Description

Min

Nom

Max

Units

Shutdown (ON/OFF)

Negative Logic

Converter ON

Source Current

Converter OFF

Open Circuit Voltage

Positive Logic

Converter ON

Open Circuit Voltage

Converter OFF

Source Current

On/Off signal is low – converter is ON

ON/OFF pin is connected to -Vin

ON/OFF pin is floating

On/Off signal is low –converter is OFF

ON/OFF pin is floating

ON/OFF pin is connected to -Vin

-1.0

3.5

3.5

-1.0

2.1

2.5

2.0

1.8

150

5

50

5

1.8

1

VDC

mADC

VDC

VDC

VDC

VDC

VDC

mADC

Overtemperature

Protection

Average Board Temperature

105

°C