Released 2013

Features of BRNS20

• Small size and high efficiency non-isolated DC-DC converter.
• Footprint and external form is DOSA 3rd generation based.
• Wide input voltage.
• Wide adjustment output voltage range.
• Built-in remote ON/OFF, Power good, Start-up sequence, Frequency synchronization.
• Built-in overcurrent and thermal protection (auto recovery type) functions.

Ordering Information and Options

BRN(1)  S(2)  20(3)  -  (4)  

(1) Series name
(2) Single output
(3) Output current
  6: 6A
  12: 12A
  20: 20A
(4) Optional
  R: Positive logic remote on/off
  I: No clock output for frequency synchronization
  Y1: Suitable control for external capacitor over 470 μF


Contents Specifications
Input Voltage DC3.0 - 14.4V
Output Voltage/Current 1.2V 20.0A
Adjustable  Voltage Range Adjustable by external resistor
0.6 - 5.5V
Protection Circuit And Others Overcurrent Protection Works over 105% of rating (auto recovery type)
Overvoltage Protection -
Remote ON/OFF Available Negative logic L: ON, H: OFF
Remote Sensing Available
Others -
Operating Temperature/Humidity -40 to +85℃, 20 to 95%RH (Non condensing) *
Safety And Noise Regulations Agency Approvals (At only AC input) UL60950-1, C-UL (CSA60950-1) , EN62368-1
Conducted Noise -
High Attenuation -
Others Dimensions (WxHxD) 20.3x8.5x11.4mm [0.80x0.35x0.45 inches]
Weight 6g max
Cooling Method Convection/Forced air
Warranty Period 5-year
  • * For further information and how to use, please see in Cosel product catalog.

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Technical Data
  • * For another documents aren't listed, please feel free to contact to a Cosel representative.
Table1 Product Status Information
No. Product Status Definition
1 New Product New Product. Recommended for new design.
2 Recommended Recommended for new design.
3 blank Product in mass production
4 NRND Not recommended for new design.
5 To be discontinued PDN (Product Discontinuation Notice) is issued and LTB (Last Time Buy) is under consideration.
6 Discontinued LTB order is no longer available.