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PDF BD9015KV-M Data sheet ( Hoja de datos )
| Número de pieza | BD9015KV-M | |
| Descripción | 2ch Synchronous Rectification Step-Down Controller | |
| Fabricantes | ROHM Semiconductor | |
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Datasheet
Switching Regulator with external FET
3.9 to 30V, 2ch Synchronous Rectification
Step-Down Controller
BD9015KV-M BD9016KV-M
General Description
The BD9015KV-M and BD9016KV-M are high perfor-
mance synchronous rectification switching controllers
with wide input range and dual channel output.
The synchronous rectification method comes with high
efficiency making controller ideal for eco-designs(low
power consumption) of numerous electronics.
All channels have enable pins, soft start functionality and
power good outputs. Startup and shutdown can be
controlled independently.
An integrated PLL circuit can be synchronized to an
external 250kHz to 600kHz clock signal.
Features
■ N channel MOSFET direct drive
■ Synchronous rectification for increased efficiency
■ Acceptable Low ESR ceramic capacitor at output
■ Integrated PLL circuit for external synchronization;
250kHz to 600kHz
■ Current mode control
■ High side MOSFET current sensing
■ Pre-bias functionality
■ Independent ON/OFF control for all channels
■ At Max Duty the oscillation frequency is slowed down
to 1/5, reducing the input/output voltage difference.
■ Low voltage and over voltage detection circuit at all
outputs
When the over voltage is detected, the L-side FET is
OFF (BD9015KV-M). The L-side FET is ON
(BD9016KV-M).
Low side FET is ON (BD9016KV-M)
■ Power good indicator pin (PGOOD)
■ Integrated overcurrent protection with self recovery.
Typical Application Circuit
Key Specifications
Input voltage range:
3.9 V to 30 V
Output voltage range:
0.8 V to 10 V
Accurate voltage reference:±1.5%(-40°C to +105°C)
Switching frequency:
250 kHz to 550 kHz
Shutdown current:
0μA (Typ)
Operating temperature range: -40°C to + 105 °C
Package
VQFP48C
W (Typ) x D (Typ) x H (Max)
9.00 mm x 9.00 mm x 1.60 mm
VQFP48C
Applications
■ Car audio, Car navigation
■ LCDTV, PDPTV, DVD, PC, etc..
5V/4A
BD9015KV/
BD9016KV
Figure 1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product is not designed for protection against radioactive rays
1/27
TSZ02201-0T1T0PB00040-1-2
22 .JUL.2013 Rev.001
1 page  
BD9015KV-M BD9016KV-M
Datasheet
(11) Overvoltage protection (OVP)
BD9015KV-M, If the output voltage (FB voltage) rises above 108.5 %, OUTH and OUTL will turn off.
Once the output returns to a normal state the chip will recover. However, in case of light load or if recovery takes time, the
COMP voltage will drop and recovery will be done with the minimum duty cycle, which may lead to undershoot of the output.
In case this undershoot becomes an application problem, the output capacitor should be increased or the phase
compensation RC constant should be adjusted.
BD9016KV-M, If the output voltage (FB voltage) rises above 108.5 %, only OUTH will turn off. OUTL continues to turn on
and L-side FET will discharge the output capacitance. The ON pulse width of OUTL is determined by PWM COMP. If a short
to VCC is considered the countermeasures needed are described in the “Operational Notes” at page 24.
(12) Under voltage lockout circuit (UVLO)
If the VREG5 voltage drops below 3.6 V (typ) the UVLO is activated and the device will shut down.
(13) Thermal shutdown (TSD)
If the chip temperature (Tj) reaches or exceeds ca. 150 °C the output is turned off.
www.rohm.co.jp
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/27
TSZ02201-0T1T0PB00040-1-2
22 .JUL.2013 Rev.001
5 Page 
BD9015KV-M BD9016KV-M
Typical Performance Curves
Datasheet
3.0 0.3
2.5
2.0 0.2
1.5
1.0 0.1
0.5
0.0
-40
-20 0 20 40 60 80
AAMMBBIEIENNTTTTEEMMPPEERRAATTUURREE::TTaa[°[℃C]]
100
Figure 12. EN Threshold Voltage vs. Temperature
Characteristics
0.0
-40
-20 0 20 40 60 80
AMBIENT TEMPERATURE : Ta[°℃C]
100
Figure 13. FB Pin Source Current vs.
Temperature Characteristics
3.0 1.0
2.5
0.9
Overvoltage detection
2.0
1.5 0.8
Low voltage detection
1.0
0.7
0.5
0.0
-40
-20 0 20 40 60 80
AAMMBBIIEENNTTTTEEMMPPEERRAATTUURREE :: TTaa[[°℃C]
100
Figure 14. PGOOD Pin ON Resistance vs.
Temperature Characteristics
0.6
-40
-20 0 20 40 60 80
AMBIENT TEMPERATURE : Ta[°℃C]
100
Figure 15. Output Overvoltage / Low Voltage
Detection Voltage vs. Temperature Characteristics
www.rohm.co.jp
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/27
TSZ02201-0T1T0PB00040-1-2
22 .JUL.2013 Rev.001
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet BD9015KV-M.PDF ] | |
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