Non-isolated DC-DC converter

SynQor

Applicable to the intermediate bus architecture 

Built-in input and output filtering 

Non-isolated ultra-efficient DC-DC converter for telecommunications, industrial and medical applications

The NiQor® DC-DC converter is a non-isolated step-down regulator that achieves extremely high conversion efficiency through synchronous rectification. The NiQor series converters are mainly used in DPA systems that utilize front-end DC-DC high-power bricks (48 V input to low-voltage bus). Then, a non-isolated NiQor converter is used at the load point to create the required low-voltage output. By using a single external resistor, the wide adjustment module can be programmed to various output voltages. 

General Specifications

Operating Temperature: -40°C to +100°C 

Output voltage setting point: ±0.7 - 2.0% 

Output voltage ripple: 1.5% (typical value) of peak-to-peak value 

Input reference: Ripple current < Iin (typical value) - root mean square value of 5% 

Switching frequency: 300 - 390 kHz 

Industry-standard pin configuration and standard packaging 

Protection/Control Function

Input Under-Voltage Lockout (UVLO) 

Output current limit (OCP) and short circuit protection 

Output overvoltage protection (OVP) 

Thermal shutdown (OTP) 

Input side's on/off control 

Output voltage fine-tuning (Industrial standard fine-tuning formula) 

Operating Characteristics An extremely high efficiency of up to 96%

 

Output voltage adjustment range: 0.7 - 5.5 V 

Applicable to the intermediate bus architecture 

Built-in input and output filtering 

No minimum load requirement 

Optional features include remote sensing, wide output voltage adjustment and output current sharing. 

Following the pin arrangement and packaging in accordance with the DOSA standard 

Wide input voltage range: 

2.4 - 6.0 Vin (NQ04W33 SMT) 0.75 - 3.6 Vout at 10 amps / 16 amps 

3.0 - 6.0 Vin (NQ04W33 SIP) 0.75 - 3.6 Vout @ 10 A / 16 A 

3.0 - 5.5 Vin (NQ04T33 SIP) 0.9 - 3.3 Vout @ 10 A / 16 A 

6.0 - 15 Vin (NQ15W50 SMT) 0.8 - 5.0 Vout at 30 amps 

6.0 - 16 Vin (NQ16W50 SIP) 0.75 - 5.0 Vout at 10 A / 16 A 

6.0 - 16 Vin (NQ16W50 SMT) 0.75 - 5.0 Vout at 10 A / 16 A 

Adjustable wide output voltage range: 

0.75 - 5.0 V (W50) 

0.75 - 3.6 V (W33) 

0.9 - 3.3 V (T33)