BD9016KV-M 반도체 회로 부품 판매점
2ch Synchronous Rectification Step-Down Controller
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 ROHM Semiconductor |
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.
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○This product is not designed for protection against radioactive rays
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BD9015KV-M BD9016KV-M
Pin Configuration
(TOP VIEW)
Datasheet
Figure 2. Pin Configuration
Pin Description
Pin No. Symbol
Function
1 BOOT2 Power supply for OUTH2 driver
2 N.C. Not connected
3 CL2 Current detection setting pin 2
4 N.C. Not connected
5 VCCCL2 Power supply for current detection 2
6 N.C. Not connected
7 VCC Power supply pin
8 VCCCL1 Power supply for current detection 1
9 N.C. Not connected
10 CL1 Current detection setting pin 1
11 N.C. Not connected
12 BOOT1 Power supply for OUTH1 driver
13 OUTH1 High side FET gate pin 1
14 SW1 High side FET source pin 1
15 DGND1 Low side FET source pin 1
16 OUTL1 Low side FET gate pin 1
17 VREG5A REG input for FET driver pin
18 N.C. Not connected
19 N.C. Not connected
20 N.C. Not connected
21 FB1 Error amp input 1
22 COMP1 Error amp output 1
23 SS1 Soft start time setting pin 1
24 N.C. Not connected
Pin No. Symbol
Function
25 PGOOD1 Power good output pin 1
26 N.C. Not connected
27 EN1 Output 1 ON / OFF pin
28 EN2 Output 2 ON / OFF pin
29 N.C. Not connected
30 GND Ground pin
31 N.C. Not connected
32 N.C. Not connected
33
RT/LPFC
Oscillation frequency setting / filter
connection pin
34 SEL External synchronization select pin
35 SYNC External synchronization pulse input pin
36 PGOOD2 Power good output pin 2
37 N.C. Not connected
38 SS2 Soft start time setting pin 2
39 COMP2 Error amp output 2
40 FB2 Error amp input 2
41 N.C. Not connected
42 EXTVCC External power supply input pin
43 N.C. Not connected
44 VREG5 REG output for FET driver pin
45 OUTL2 Low side FET gate pin 2
46 DGND2 Low side FET source pin 2
47 SW2 High side FET source pin 2
48 OUTH2 High side FET gate pin 2
www.rohm.co.jp
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
2/27
TSZ02201-0T1T0PB00040-1-2
22 .JUL.2013 Rev.001
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BD9016KV-M controller
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