Document
BR205 POL Converter Module for 5 V System Intermediate Bus
Features and Benefits
• Industry standard footprint • Improved soldering: gold-plated pads and side notches • Synchronized rectifying type stepdown chopper • High power • High efficiency: 96.4% at VIN = 5 V, VO = 3.3 V, IO = 5 A • Operating temperature range: –40°C to 85°C • Input voltage range: 4.5 to 7.0 VDC • Output voltage: 0.75 to 3.63 V • Output current range: 0 to 10 A • Operating frequency: 600 kHz • Overcurrent protection function
Description
The BR205 is a thin type POL converter modules with an industry standard exterior shape and footprint, responsive to very high speed loads and compatible with ceramic capacitors. It can be used as design-free POL converters for a 5 V system intermediate bus. It can be configured easily, reducing overall design time, and allowing reuse of designs. Miniaturization was achieved by high frequency switching technology, allowing saving space on the application PCB. Soldering capability has been significantly improved by adoption of end face through holes.
Package: Module
Applications:
• Communication devices • Computer server • Other low power conversion
20.3 × 11.4 × 4.2 mm
Typical Application Circuit
VPG (5 V)
BR205 ON/OFF VS+ VOUT RTRIM GND RTRIM COUT VOUT
Power Good VIN ON/OFF GND CIN
PG VIN
BR205-DS, Rev. 0.05E February 6, 2013
SANKEN ELECTRIC CO., LTD.
http://www.sanken-ele.co.jp/en/
Free Datasheet http://www.Datasheet4U.com
BR205
POL Converter Module for 5 V System Intermediate Bus
Selection Guide
Part Number
BR205
Output Voltage, VOUT (V)
0.75 to 3.63
Operating Frequency, fOP (kHz)
600
The polarity value for current specifies a sink as "+," and a source as “−,” referencing the IC.
Absolute Maximum Ratings, valid at TA = 25°C
Characteristic ¯¯ ¯¯ ¯ Pin Voltage ON/¯ O F F PG Pin Voltage Operating Temperature Range Storage Temperature Range Operating Humidity Range Storage Humidity Range Symbol VONOFF VPG TA Tstg HOP Hstg No condensation No condensation Sink current 7 mA Notes Pins 1 9 – – – – Rating 7 7 –40 to 85 –40 to 85 20 to 85 10 to 95 Unit V V °C °C % %
BR205-DS, Rev. 0.05E
SANKEN ELECTRIC CO., LTD.
2
Free Datasheet http://www.Datasheet4U.com
BR205
POL Converter Module for 5 V System Intermediate Bus
Electrical Characteristics Unless specifically noted, TA is 25°C
Characteristic Input Voltage Range Output Voltage Output Current Output Voltage Accuracy Ripple Voltage1 Efficiency Operating Frequency Overcurrent Protection Threshold Input Capacitor2 Output Capacitor2 Startup Time Start Delay Time Symbol VIN VOUT IOUT ErrVOUT Vrip η fOP IOUT(OCP) CIN COUT tr td Hiccup When input voltage is an ideal voltage source When input voltage is an ideal voltage source VOUT from 10% to 90% points ¯¯ ¯¯ ¯ pin open, measured from the With the ON/¯ O F F VIN pin switching high, to VOUT reaching 10% of operating level (see figure 1) With the VIN pin high, measured from the ¯¯ ¯¯ ¯ pin switching open, to VOUT reaching ON/¯ O F F 10% of operating level (see figure 2) Lower limit of Power Good Upper limit of Power Good ¯¯ ¯¯ ¯ pin is set open, the When the ON/¯ O F F BR205 converter is turned on ¯¯ ¯¯ ¯ pin is pulled down to GND, When the ON/¯ O F F the BR205 converter is turned off Adjust with RTRIM With temperature derating VIN = 4.5 to 7 V, IOUT = 0 to IOUT(max), Operating Temperature Range, RTRIM =1% accuracy BW = 20 MHz, VOUT = 3.3 V, IOUT = 0 to10 A, COUT = 400 μF VIN = 5 V, IOUT = 10 A, VOUT = 1.5 V VIN = 5 V, IOUT = 10 A, VOUT = 3.3 V Test Conditions Min. 4.5 0.75 0 –2.0 – – – – – 100 400 – – Typ. 5.0 – – – 10 87.8 94.5 600 24.5 – – 0.5 3 Max. 7.0 3.63 10 2.0 50 – – – – 5000 1900 – – Unit V V A %VOUT mVp-p % % kHz A μF μF ms ms
¯¯ ¯¯ ¯ Start Delay Time ON/¯ O F F Interface Characteristics Power Good ¯¯ ¯¯ ¯ Pin High Voltage ON/¯ O F F ¯¯ ¯¯ ¯ Pin Low Voltage ON/¯ O F F
1See 2Place
trcd
–
3
–
ms
PWGL PWGH VIH VIL
83.1 109.3 0.55 0.27
87.3 112.7 0.70 0.30
91.5 116.9 1.00 0.33
%VOUT %VOUT V V
the Ripple Voltage Measuring Method section. bypass capacitors between the VIN and VOUT terminals and GND (see CIN and COUT in the Typical Application Circuit diagram). Locate the capacitor as close as possible to the terminal.
BR205-DS, Rev. 0.05E
SANKEN ELECTRIC CO., LTD.
3
Free Datasheet http://www.Datasheet4U.com
BR205
POL Converter Module for 5 V System Intermediate Bus
Characteristic Definitions
ON/OFF 0 VIN 0
(Open)
VOUT 0 td
Figure 1. Start Delay Time, td , definition
90% 10% tr
VIN 0 ON/OFF 0 90% 0 trcd 10% tr Open
VOUT
¯¯ ¯¯ ¯ Start Delay Time, trcd , definition Figure 2. ON/¯ O F F
BR205-DS, Rev. 0.05E
SANKEN ELECTRIC CO., LTD.
4
Free Datasheet http://www.Datasheet4U.com
BR205
POL Converter Module for 5 V System Intermediate Bus
Performance Characteristics TA = 25°C Efficiency versus Output Current VOUT = 3.3 V
Temperature Derating
Measuring condition: Product soldered directly to 101.6 ×101.6 mm, 1.6 mm thick, 6-layer PCB PCB is mounted vertically during me.