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부품번호 uP6201BQ 기능
기능 Compact Dual-Phase Synchronous-Rectified Buck Controller
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uP6201BQ 데이터시트, 핀배열, 회로
uP6201A/B
Compact Dual-Phase
Synchronous-Rectified Buck Controller
General Description
Features
The uP6201A/B is a compact dual-phase synchronous-
rectified Buck controller specifically designed to deliver high
quality output voltage for high power applications. This part
is capable of delivering up to 60A output current thanks to
its embedded bootstrapped drivers that support 12V + 12V
driving capability. The uP6201A/B features configurable gate
driving voltage for maximum efficiency and optimal
performance. The built-in bootstrap diode simplifies the
circuit design and reduces external part count and PCB
space.
The output voltage is precisely regulated to internal 0.6V
or external reference voltage from 0.4V to 2.5V. The
uP6201A/B adopts DCR current sensing technique for
channel current balance, over current protection, droop
control, and output current indication. The uP6201A/B offers
a regulated 5V voltage with 20mA output current capability
for other peripheral circuitry.
A MODE pin programs single- or two- phase operation
making the uP6201A/B ideally suitable for dual power input
applications like PCIE interfaced graphic cards.
This part features comprehensive protection functions
including over current protection, input/output under voltage
protection, over voltage protection and over temperature
protection.
Other features include adjustable soft start, adjustable
operation function, quick response to step load transient,
and power OK. With aforementioned functions, this part
provides customers a compact, high efficiency, well-
protected and cost-effective solutions. This part comes to
QFN4x4-24L package.
† Operate with 4.5V ~13.2V Supply Voltage
† Selectable External or Internal 0.6V Reference
† Support Single- and Two- Phase Operation
† 5VCC with 20mA Output Current Capability
† ±2.0% Over Line Voltage and Temperature
† Simple Single-Loop Voltage-Mode Control
† 12V Bootstrapped Drivers with Internal
Bootstrap Diode
† DCR Current Sensing
† Adjustable Operation Frequency form 50kHz to
1MHz Per Phase
† External Compensation
† Adjustable Over Current Protection and Output
Current Indication
† External Reference
† Adjustable Soft Start
† QFN4x4-24L Package
† RoHS Compliant and 100% Lead (Pb)-Free
Applications
† Middle-High End GPU Core Power
† High End Desktop PC Memory Core Power
† Low Output Voltage, High Power Density DC-DC
Converters
† Voltage Regulator Modules
Pin Configuration
Ordering Information
Order Number Package Type
Remark
uP6201AQ QFN 4x4-24L
Wtih Droop Function
uP6201BQ QFN 4x4-24L
Without Droop Function
Note: uPI products are compatible with the current IPC/
JEDEC J-STD-020 and RoHS requirements. They are 100%
matte tin (Sn) plating and suitable for use in SnPb or Pb-
free soldering processes.
18 17 16 15 14 13
PHASE2 19
LGATE2 20
VCCDRV 21
VCC 22
LGATE1 23
PHASE1 24
PGND
12 COMP
11 RT
10 IOUT
9 CSP2
8 CSN2
7 CSN1
123456
uPI Semiconductor Corp., http://www.upi-semi.com
Rev. 03, August 2007
uP6201A/B
1




uP6201BQ pdf, 반도체, 판매, 대치품
uP6201A/B
Functional Pin Description
No. Pin Name Pin Function
Upper Gate Driver Output for Channel 1. Connect this pin to the gate of upper MOSFET.
1 UGATE1 This pin is monitored by the adaptive shoot-through protection circuitry to determine when the
upper MOSFET has turned off.
Bootstrap Supply for the floating upper gate driver of channel 1. Connect the bootstrap
2
BOOT1
capacitor CBOOT between BOOT1 pin and the PHASE1 pin to form a bootstrap circuit. The
bootstrap capacitor provides the charge to turn on the upper MOSFET. Typical values for CBOOT
range from 0.1uF to 0.47uF. Ensure that CBOOT is placed near the IC.
3
5VCC
Internal Regulator Output. This is the output pin of linear regulator for internal bias and external
usage. The output current capability is 20mA.
4
AGND
Signal Ground for the IC. All voltages levels are measured with respect to this pin. Tie this
pin to the ground island/plane through the lowest impedance connection available.
Operation Phase Selection. Pulling this pin lower than 0.4V sets two-phase operation.
5
MODE
Pulling this pin higher than 1.4V sets single-phase operation and disables phase2. Once
operated in single-phase mode, the operation mode is latched. It is required to toggle SS/EN
or 5VCC pin to reset the IC.
6
CSP1
Positive Input of Current Sensing GM1. This pin companied with CSN1 senses the inductor
current of channel 1 through an RC network.
7
CSN1
Negative Input of Current Sensing GM1. This pin companied with CSP1 senses the inductor
current of channel 1 through an RC network.
8
CSN2
Negative Input of Current Sensing GM2. This pin companied with CSP2 senses the inductor
current of channel 2 through an RC network.
9
CSP2
Positive Input of Current Sensing GM2. This pin companied with CSN2 senses the inductor
current of channel 2 through an RC network.
Output Current Indication. This pin indicates the output current level. Connect this pin with
10 IOUT resistor to ground to set the coefficient of the output current indication. The resistor also decide
the output impedance of droop control (uP6201A Only)
11
RT
Operation Frequency Setting. Connecting a resistor between this pin and AGND to set the
operation frequency.
Error Amplifier Output. This is the output of the error amplifier (EA) and the non-inverting input
12 COMP of the PWM comparators. Use this pin in combination with the FB pin to compensate the voltage-
control feedback loop of the converter.
Feedback Voltage. This pin is the inverting input to the error amplifier. A resistor divider from
13 FB the output to AGND is used to set the regulation voltage. Use this pin in combination with the
COMP pin to compensate the voltage control feedback loop of the converter.
14
SS/EN
Soft Start Output. Connect a capacitor from this pin to AGND to set the soft start interval.
Pulling low this pin down to 0.5V shuts down the uP6201A/B.
15
REFIN
External Reference Input. This is input pin of external reference voltage. If external reference
voltage is not available, connect this pin to 5VCC for internal 0.6V reference.
Power OK Indication. POK is an open drain output used to indicate the status of the voltages
16
POK
on SS pin and FB pin. POK will go high impedance if VFB> 075% of reference voltage after soft
start ends.
uPI Semiconductor Corp., http://www.upi-semi.com
Rev. 03, August 2007
4

4페이지










uP6201BQ 전자부품, 판매, 대치품
uP6201A/B
Functional Description
The uP6201A/B is a compact dual-phase synchronous-
rectified Buck controller specifically designed to deliver high
quality output voltage for high power applications. This part
is capable of delivering up to 60A output current thanks to
its embedded bootstrapped drivers that support 12V + 12V
driving capability. The built-in bootstrap diode simplifies the
circuit design and reduces external part count and PCB
space.
The output voltage is precisely regulated to internal 0.6V
or external reference voltage from 0.4V to 2.5V. The
uP6201A/B adopts DCR current sensing technique for
channel current balance, over current protection, droop
control, and output current indication. The uP6201A/B offers
5VCC with 20mA output current capability for other
peripheral circuitry.
This part features comprehensive protection functions
including over current protection, input/output under voltage
protection, over voltage protection and over temperature
protection.
Other features include internal soft start, adjustable
operation function, quick response to step load transient,
power OK and external reference input. With aforementioned
functions, this part provides customers a compact, high
efficiency, well-protected and cost-effective solutions. This
part comes QFN 4x4_24L package.
External VCC and Internal 5VCC Regulator
The uP6201A/B provides flexible gate driving voltage for
maximum efficiency and optimal performance. The VCC
pin powers the uP6201A/B control circuit, the lower gate
drivers and the bootstrap circuit for the higher gate drivers.
A linear regulator regulates VCC at 9V as shown in Figure
1. Connect VCCDRV pin to the base/gate of the external
NPN/NMOS transistor and VCC pin to the emitter/source
to form a linear regulator. Ensure that the ceramic bypass
capacitor is placed next to the IC.
An internal linear regulator regulates VCC input to a 5VCC
voltage for internal control logic circuit if VCC is higher
than 7V. This linear regulator is designed to support up to
20mA output current for peripheral circuits. Place an 1uF
ceramic capacitor next to the 5VCC pin to decouple this
voltage.
Figure 2 shows the application where 12V gate voltage is
used. When VCCDRV is left open, VCC pin can receive a
well decoupled supply input of 4.5~13.2V. However, if VIN
is lower than 5.5V, the dropout voltage of the internal
regulator may cause 5VCC too low for normal operation.
Tie 5VCC to VCC directly for the applications where VCC
is under 5.5V as shown in Figure 3.
VIN = 10.8~13.2V
VCCDRV 21
VCC 22
uP6201A/B
5VCC 3
LDO
Figure 1. 9V Drive Application
VIN = 10.8~13.2V
VCCDRV 21
VCC 22
uP6201A/B
5VCC 3
LDO
Figure 2. 12V Drive Application
VIN = 4.5~5.5V
VCCDRV 21
VCC 22
uP6201A/B
5VCC 3
LDO
Figure 3. 5V Drive Application
Bootstrap diodes are embedded to facilitates PCB design
and reduce the total BOM cost. No external Schottky diode
is required. The uP6201A/B integrates MOSFET gate
drives that are powered from the VCC pin and support
12V+12V driving capability. Converters that consist of
uP6201A feature high efficiency without special
consideration on the selection of MOSFETs.
uPI Semiconductor Corp., http://www.upi-semi.com
Rev. 03, August 2007
7

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관련 데이터시트

부품번호상세설명 및 기능제조사
uP6201B

Compact Dual-Phase Synchronous-Rectified Buck Controller

uPI Semiconductor
uPI Semiconductor
uP6201B

Compact Dual-Phase Synchronous-Rectified Buck Controller

uPI Semiconductor
uPI Semiconductor

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