NCP81239 Datasheet PDF - ON Semiconductor

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NCP81239
ON Semiconductor

Part Number NCP81239
Description USB Power Delivery 4-Switch Buck Boost Controller
Page 19 Pages


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NCP81239
USB Power Delivery
4-Switch Buck Boost
Controller
The NCP81239 USB Power Delivery (PD) Controller is a
synchronous buck boost that is optimized for converting battery
voltage or adaptor voltage into power supply rails required in
notebook, tablet, and desktop systems, as well as many other
consumer devices using USB PD standard and CType cables. The
NCP81239 is fully compliant to the USB Power Delivery
Specification when used in conjunction with a USB PD or CType
Interface Controller. NCP81239 is designed for applications requiring
dynamically controlled slew rate limited output voltage that require
either voltage higher or lower than the input voltage. The NCP81239
drives 4 NMOSFET switches, allowing it to buck or boost and support
the consumer and provider role swap function specified in the USB
Power Delivery Specification which is suitable for all USB PD
applications. The USB PD Buck Boost Controller operates with a
supply and load range of 4.5 V to 28 V.
Features
Wide Input Voltage Range: from 4.5 V to 28 V
Dynamically Programmed Frequency from 150 kHz to 1.2 MHz
I2C Interface
Real Time Power Good Indication
Controlled Slew Rate Voltage Transitioning
Feedback Pin with Internally Programmed Reference
Support USBPD/QC2.0/QC3.0 Profile
2 Independent Current Sensing Inputs
Over Temperature Protection
Adaptive NonOverlap Gate Drivers
Filter Capacitor Switch Control
OverVoltage and OverCurrent Protection
Dead Battery Power Support
5 x 5 mm QFN32 Package
Typical Application
Notebooks, Tablets, Desktops
All in Ones
Monitors, TVs, and Set Top Boxes
Consumer Electronics
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1 32
QFN32 5x5, 0.5P
CASE 485CE
MARKING DIAGRAM
1
NCP81239
AWLYYWWG
G
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = PbFree Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Device
Package
Shipping
NCP81239MNTXG QFN32 4000 / Tape
(PbFree) & Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2016
July, 2016 Rev. 0
1
Publication Order Number:
NCP81239/D



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5V Rail
Dead Battery /
VCONN
RDRV
CVDRV
CVCC
Current Sense 1
Current Sense 2
RCS1
RCS2
Curret Limit Indicator
Interrupt
Enable
I2C
DBIN
DBOUT
VDRV
VCC
CS1
CS2
CLIND
INT
EN
SDA
SCL
COMP
RC
CP
CC AGND
FLAG
NCP81239
V1
V1
CSP1
CSN1
FB
CSN2
CSP2
CFET1
BST2
BST1
HSG1
VSW1
HSG2
VSW2
LSG1
PGND1
LSG2
PGND2
PDRV
RS1
Q1 CB1
L1
Q2
V2
RS2
Q6
CO1
RPU
CO2
RPD
Q5
CB2
Q4
Q3
Figure 1. Typical Application Circuit
32 31 30 29 28 27 26 25
HSG1
LSG1
PGND1
CSN1
CSP1
V1
CS1
CLIND
1
2
3
4
5
6
7
8
24 HSG2
23 LSG2
22 PGND2
21 CSP2
20 CSN2
19 FB
18 CS2
17 PDRV
9 10 11 12 13 14 15 16
Figure 2. Pinout
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NCP81239
DBOUT
DBIN
VCC
VDRV
Current Limiting
Circuit
For Dead Battery
CONFIG
4.0V
VCC
VDRV
+ Vcc_rdy
V1
Startup
INPUT
UVLO
BG
IUVLOB
CS1
NC
CS2
4.0V
CS1
+
+
CLIMP 1
CLIMP 2
CS2 +
VDRV_rdy
CLINDP1
CLIND
CLINDP2
CL2N
CL2P
CL1N
CL1P
CONFIG
BG
+ CL2N REF
Thermal
CS2_INT Shutdown
V1
CSP1
CS1
+ CL2P REF
CONFIG
TS
CS1_INT
+ CL1N REF
Boot1 _UVLO
CS1_INT
+
Boot1V
+ CL1P REF
CONFIG
CL2
CL1
SW1
SW2
SW3
SW4
IUVLOB
PG
TS
Control
Logic
NOL
Drive
Logic_1
VDRV
CSP1
CSN1
BST1
HSG1
VSW1
LSG1
PGND1
PGND2
LSG2
CLIND
CLIND
EN
EN
0.8V +
SDA
SCL
EN_MASK
ENPOL
PG_Low
ENEN
LOGIC
ADC
Analog
Mux
CSP1
VFB
CS1_INT
CS2_INT
VFB
PG_High
Value
Register
CFET
PDRV
Limit
VFB
CONFIG
Registers
OV_REF
+
+
+
I2C
Interface
Digital
Configuration
Oscillator
Ramp_0
Ramp_180
OV_MSK
PG/
OV/
LOGIC
PG_MSK
OV
PG
NOL
Drive
Logic_2
Boot2 _UVLO
CS2
0_Ramp
CS1_INT
CS2_INT
CS1_INT
CS2_INT
CSN2
CFET
VDRV
+
Boot1V
VDRV
VSW2
HSG2
BST2
CSP2
CSN2
CFET
INT
COMP
INT
Interface
Status
Registers
PG
TS
Reference BG
Error OTA
500µS/100µS
+
180_Ramp
+
PDRV
CONFIG
VDRV
PDRV
Buck Logic
Boost Logic
SW1
SW2
CC
CP
VFB
_
+
Buck Boost
Logic
SW3
SW4
FB
RC
0_Ramp
VFB
AGND
FLAG
Figure 3. Block Diagram
V2
Q1
CO CO2
Q2
Table 1. PIN FUNCTION DESCRIPTION
Pin Pin Name
Description
1
HSG1
S1 gate drive. Drives the S1 Nchannel MOSFET with a voltage equal to VDRV superimposed on the switch
node voltage VSW1.
2
LSG1
Drives the gate of the S2 Nchannel MOSFET between ground and VDRV.
3, 22
PGND
Power ground for the low side MOSFET drivers. Connect these pins closely to the source of the bottom
Nchannel MOSFETs.
4
CSN1
Negative terminal of the current sense amplifier.
5
CSP1
Positive terminal of the current sense amplifier.
6 V1 Input voltage of the converter
7 CS1 Current sense amplifier output. CS1 will source a current that is proportional to the voltage across RS1 to an
external resistor. Ground this pin if not used.
8
CLIND
Open drain output to indicate that the CS1 or CS2 voltage has exceeded the I2C programmed limit.
9
SDA
I2C interface data line.
10
SCL
I2C interface clock line.
11 INT Interrupt is an open drain output that indicates the state of the output power, the internal thermal trip, and oth-
er I2C programmable functions.
12
CFET
Controlled drive of an external MOSFET that connects a bulk output capacitor to the output of the power
converter. Necessary to adhere to low capacitance limits of the standard USB Specifications for power prior to
USB PD negotiation.
1314
AGND
The ground pin for the analog circuitry.
15
COMP
Output of the transconductance amplifier used for stability in closed loop operation.
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NCP81239
Table 1. PIN FUNCTION DESCRIPTION
Pin Pin Name
Description
16 EN Precision enable starts the part and places it into default configuration when toggled.
17
PDRV
The open drain output used to control a PMOSFET.
18 CS2 Current sense amplifier output. CS2 will source a current that is proportional to the voltage across RS2 to an
external resistor. Ground this pin if not used.
19 FB Feedback voltage of the output, negative terminal of the gm amplifier.
20
CSN2
Negative terminal of the current sense amplifier.
21
CSP2
Positive terminal of the current sense amplifier.
23
LSG2
Drives the gate of the S2 Nchannel MOSFET between ground and VDRV.
24
HSG2
S4 gate drive. Drives the S4 Nchannel MOSFET with a voltage equal to VDRV superimposed on the switch
node voltage VSW2.
25
BST2
Bootstrapped Driver Supply. The BST2 pin swings from a diode voltage below VDRV up to a diode voltage
below FB + VDRV. Place a 0.1 mF capacitor from this pin to VSW2.
26
VSW2
Switch Node. VSW2 pin swings from a diode voltage drop below ground up to output voltage.
27 DBOUT The output of the dead battery circuit which can also be used for the VCONN voltage supply.
28
DBIN
The dead battery input to the converter where 5 V is applied. A 1 mF capacitor should be placed close to the
part to decouple this line.
29
VDRV
Internal voltage supply to the driver circuits. A 1 mF capacitor should be placed close to the part to decouple
this line.
30
VCC
The VCC pin supplies power to the internal circuitry. The VCC is the output of a linear regulator which is pow-
ered from V1. Can be used to supply up to a 100 mA load. Pin should be decoupled with a 1 mF capacitor for
stable operation.
31
VSW1
Switch Node. VSW1 pin swings from a diode voltage drop below ground up to V1.
32
BST1
Driver Supply. The BST1 pin swings from a diode voltage below VDRV up to a diode voltage below V1 +
VDRV. Place a 0.1 mF capacitor from this pin to VSW1.
33 THPAD Center Thermal Pad. Connect to AGND externally.
Table 2. MAXIMUM RATINGS
Over operating freeair temperature range unless otherwise noted
Rating
Symbol
Input of the Dead Battery Circuit
DBIN
Output of the Dead Battery Circuit
DBOUT
Driver Input Voltage
VDRV
Internal Regulator Output
VCC
Output of Current Sense Amplifiers
CS1, CS2
Current Limit Indicator
CLIND
Interrupt Indicator
INT
Enable Input
I2C Communication Lines
EN
SDA, SCL
Compensation Output
COMP
V1 Power Stage Input Voltage
V1
Positive Current Sense
CSP1
Negative Current Sense
CSN1
Positive Current Sense
CSP2
Negative Current Sense
CSN2
Feedback Voltage
FB
Min Max Unit
0.3 5.5 V
0.3 5.5 V
0.3 5.5 V
0.3 5.5 V
0.3 3.0 V
0.3
VCC + 0.3
V
0.3
VCC + 0.3
V
0.3 5.5 V
0.3
VCC + 0.3
V
0.3
VCC + 0.3
V
0.3 40 V
0.3 40 V
0.3 40 V
0.3 40 V
0.3 40 V
0.3 5.5 V
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