STEVAL-LLL008V1
Data brief
100 W high efficiency and low THD dimmable LED driver reference design based
on HVLED001B, HVLED002 and SPSGRFC
Features
•
Input voltage range 90 – 265 VAC
•
•
•
Dual stage power converter: high power factor PSR-CV and CC step-down
Sub-1 Ghz connectivity for 6LoWPAN Mesh network
Output voltage range 40 - 70 V, max. current 1.4 A with less then 100 mA
current ripple, max. output power 100 W.
Peak efficiency overall:
–
Min: above 90% at 90 VIN AC, 40 VOUT DC
•
–
•
•
Max: above 93% at 265 VIN AC, 70 VOUT DC
Standby power consumption:
–
265 VIN AC without control board: less than 0.3 W
–
265 VIN AC with control board: less than 0.6 W
RoHS compliant
Description
The STEVAL-LLL008V1 reference design is a dual-stage LED driver with high power
factor designed for 100 W LED lighting applications using 6LoWPAN Mesh
networking.
Product summary
Dual stage LED driver
evaluation board with
High Power Factor
STEVALLLL008V1
Firmware for STEVALLLL008V1 evaluation
kit
STSWLLL008FW
The front-end flyback converter provides high power factor and low THD and
implements CV primary side regulation (PSR) with input from an auxiliary winding on
the transformer through the ZCD pin on the HVLED001B controller, so no isolated
optocoupler is required. The flyback converter can deliver 105 W with an average
79 V output voltage and 1.8 V maximum ripple.
The converter output supplies an inverse buck stage that delivers a regulated 1.4 A
current to the LED driver load. The secondary transformer is also able to supply (a
few milliamps via an auxiliary choke) the voltage needed to power up the HVLED002
controller, which manages the inverse buck circuit to provide current limitation for
dimming and On/Off control.
The STEVAL-LLL008V1 integrates an STM32L071KZ microcontroller, which is able
to receive remote on, off and dimming commands via an embedded SPSGRFC sub-1
GHz transceiver module. The connectivity functionality can be extended to multiple
lighting nodes in a 6LowPAN mesh network.
HPF flyback controller
with constant voltage
primary-sensing and
ultra-low standby
consumption
HVLED001B
high performance
current mode LED
controller
HVLED002
ultra-low-power ARM
Cortex-M0+ MCU
STM32L071KZ
A data concentrator unit (DCU) and mobile Android application have been developed
to help you explore the LED lighting reference design further. The DCU consists of a
NUCLEO-F401RE development platform, plus the X-NUCLEO-IDS01A4 for sub 1GHz communication with the LED driver board and a X-NUCLEO-IDB05A2 board for
Bluetooth communication with a mobile device.
N-channel 800 V, 0.23
Ω typ., 16 A MDmesh
K5 Power MOSFET in
TO-220FP package
STF23N80K5
The ST 6LoWPAN Smart Streetlight mobile application (available on Google Play
store) collects lighting nodes represented by the microcontroller and RF module on
the evaluation board in a 6LoWPAN mesh network.
N-channel 100 V, 0.062
Ω typ., 4.5 A STripFET
F7 Power MOSFET in STL4N10F7
a PowerFLAT 3.3x3.3
package
DB4057 - Rev 2 - May 2020
For further information contact your local STMicroelectronics sales office.
www.st.com
STEVAL-LLL008V1
Product summary
sub-1 GHz
programmable
transceiver module
SPSGRFC
Applications
LED Street
Lighting
DB4057 - Rev 2
page 2/7
STEVAL-LLL008V1
LED street lighting in Smart City applications
1
LED street lighting in Smart City applications
High voltage LED street and zone lighting applications typically require robust but highly efficient power supplies
able to generate tightly regulated output currents with high power factor, low THD and minimal voltage ripple.
The design achieves very high efficiency through the HVLED001B controller, which drives a STF23N80K5 power
MOSFET on the primary side of an AC/DC HPF flyback converter and regulates the voltage on the same primary
side.
The flyback converter output is then regulated by the inverse buck stage, which is driven by the HVLED002
controller through the STL4N10F7 power MOSFET. The HVLED002 translates external dimming commands into
current limitation on the inverse buck converter to achieve the desired dimming effect.
Networking and connectivity solutions are also often implemented for the simultaneous control of several lighting
nodes in a certain area. The STEVAL-LLL008V1 power converter is coupled with a SPSGRFC module to provide
sub-1 GHz connectivity for remote dimming and on/off control. The STSW-LLL008FW firmware for the evaluation
kit provides 6LoWPAN functionality to allow wireless mesh network control of multiple nodes, with the addition of
a data concentrator unit able to provision devices on a 6LoWPAN network and interface with an app to deliver
Smart City lighting control.
Figure 1. LED street lighting application with high voltage LED controller
Bridge
rectifier
Flyback topology
1.5KE300A
STTH30R03CG
STTH108A
HVLED001B
HPF flyback
controller
Filter
90 - 265V
AC Mains
GATE
DRIVER
STF23N80K5
STPS1H100U
Inverse buck
Vout = 75V
Pout = 105W
at 1.4A
PSR
CONTROL
LOOP
6LoWPAN wireless
mesh network
ZCD
STL4N10F7
VIN
ON / OFF
DIMMING
HVLED002
LED CURRENT
CONTROL
controller
LF33AB
LDO
power
board
connectivity
board
STM32L071KZ
MCU
STM32L0
mobile
App
STM32L0
STSW-LLL008FW firmware
utilities
applications
middleware
CMSIS
3V3
ON / OFF
DIMMING
drivers
SPSGRFC
SPIRIT-1
transceiver unit
STM32 NUCLEO PLATFORM
DATA CONCENTRATOR UNIT
RELATED LINKS
STM32Cube function pack for IoT sensor node connection to 6LoWPAN networks through sub-1GHz RF communication
DB4057 - Rev 2
page 3/7
DB4057 - Rev 2
2
Schematic diagrams
Figure 2. STEVAL-LLL008V1 power board schematic diagram
TP7
D2
T1
STTH30R03CG
2295.0004
5
R23
0R0
1
2
3
1
R3
NM
C20
220nF
100V
C22
D11
VBUS
BZX85B82
TP10
D1
TP11
1
1
2
C19
470uF
100V
C18
470uF
100V
R16
0R0
8
2
C17
470uF
100V
2
1
3
D5
STTH108A
C16
470uF
100V
V_S Aux
R35
1K
2 2
1
1
7
D18
Q5
R27
1K0
1nF
1kV
2
2
1
2
1
2
2
D10
LL4148
C23
NM
1
2
1
D21
2
OUT
R39
200k
DIMMING
RT/CT
CS
3
1
R41
1k0
TP15
STL4N10F7
R63
1K
C35
47nF
2
2
C25
470pF
Q18
MMBT3904LT1
1
HVLED002
1
R43
1K0
1
C26
470pF
R42
0R36
1%
2
En_Control_ON/OFF
U2
VREF
R52
0R33
1%
2
3
R40
100R
5
C34
10nF
4
2
4
RT/CT
Q2
2
1
2
D13
STPS0560Z
2
GND
1
TP16
LL4148
6
1
VIN
2
7
FB
R59
10k
COMP
1
1
R60
750R
R62
1K
2
R13
470R
2
R38
100k
1
2
1
2
R58
680R
Q16
MMBT3906LT1
TP9
1
Q3
2N7002
D17
TZM5232B-GS08
1
2
8
1 2
1
2
R14
20K
1%
C11
22uF
2
SMZJ3809-68V
1
1
7141DG
Heat-Sink
1
C9
1nF
C8
1.5nF
2
D16
NM
R10
0R33
1%
1W
1
C13
470pF
R37
0R33
1%
1W
1
2
C7
330nF
D24
R53
NM
R11
0R33
1%
1W
2
D8
TZM5246B-GS08
16V
1
C12
22uF
50V
C29
10uF
35V
HS
Heatsink mounted on Q1
4
8
C10
100nF
2
D19
LL4148
C24
100nF
2
TP6
R17
750R
2
R45
82k
R9
220R
2
TP2
1
1
1
2
2
1
2
TP3
6 ZCD
R47
22K
1
C14
100pF
1kV
1
7 CS
TP4
R12
56K
Q1
STF23N80K5
2
1
FB
1
GND
ZCD
R8
220R
1
CS
HVLED001B
1
2
TOFF
OPTO
J5
560uH
R46
300k
R36
0R0
D7
LL4148
2
2
U3
3
5
1
R6
47K
1%
9 GD
U5
TL431AI
TP13
D9
LL4148
1
2
1
VCC
HVSU
2
TP8
10
1
R21
NM
GD
2
1
2
3
2
C15
15pF
1
2
L2
2
R44
2K7
C28
10uF
35V
2
R5
47K
1%
R26
NM
D14
TZM5245B-GS08
15V
K
TP17
1
1 1
1
2
VCC
TP5
R1
10K
NM
C21
220uF
25V
TP1
D6
LL4148
A
C27
4.7uF
100V
STPS2H100AF
BC817-25L
1
R4
0R0
J2
V_Aux Vout
1
1
C5
470nF
305Vac
X2
2
STPS1H100U
2
1
1
3
C3
3.3nF
300Vac
X1 Y2
9
4
2
C2
220nF
305Vac
X2
2
1
1
R28
150K NM
2W
R15
150K
2W
C6
2.2nF
630V
2
2
R2
10M
2
D4
1.5KE300A
R22
NM
1
C1
220nF
305Vac
X2
4
D15
TZM5257B-GS08
33V
-
RV1
S10 300K
3
D3
GBU4K-E3/45
4
1
2
3
C33
3.3nF
300Vac
X1 Y2
+
Vac = 90 - 265
L1
EH28-1.5-02-20M
2A
J1
Vout = 75V
Pout =105W @1.4A
TP12
6
1
F1
1
Vcc_3.3V
R51
4K3
LL4148
VBUS
J12
D23
1
R57
1K
U6
LF33AB
5
6
1
STL20DN10F7
Q7B
4
7
8
3
Q7A
STL20DN10F7
R61
24K
OUT
GND
IN
1
R48
NM
D20
LL4148
Q19
R49
100k
1
2
BC817-25L
1
R55
1M
2
1
C31
1uF
3
R54
0R0
C32
10uF
35V
2
D22
LL4148
V_S Aux
2
R56
100K
C30
10nF
2
R50
470k
STEVAL-LLL008V1
Schematic diagrams
page 4/7
DB4057 - Rev 2
Figure 3. STEVAL-LLL008V1 control board schematic diagram
Microcontroller Unit
Thermal Foldback
R5210K
3V3
3V3
R531K
D21
LED
R54
RT1
NTC
10K
1
2
33
3
C39
2.2pF
VSS
Y1
32.768kHz
C41
2.2pF
1
2
3
4
5
6
7
8
NRST
LED-DIMMING
PA1_GPIO_3_RADIO
PC14-OSC32_IN
PC15_OSC32_IN
NRST
VSSA
VDDA
PA0
PA1
PA2
VDDIO2
PA13
PA12
PA11
PA10
PA9
PA8
VDD
STM32L071KZU6_UFQFPN32
24
23
22
21
20
19
18
17
PA13_SWDIO
LED-ON-OFF
PA10_GPIO_2_RADIO
PA9_GPIO_1_RADIO
PA8_GPIO_0_RADIO
3V3
D23
DIODE
3V3
C43
100nF
9
10
11
12
13
14
15
16
U8
3V3
R57
1K
C40
100nF
PA3
PA4
PA5
PA6
PA7
PB0
PB1
VSS
C42
100nF
3V3
VDD
VSS
BOOT0
PB7
PB6
PB5
PB4
PA14
100nF
32
31
30
29
28
27
26
25
C38
2
4
t
THERM-DIMM-ADC
PA14_SWCLK
1
NRST
3V3
C37
100nF
SW1
PB5_SDN_RADIO
PUSHBUTTON
THERM-DIMM-ADC
PA5_SPI_SCK_RADIO
PA6_SPI_MISO_RADIO
PA4_SPI_MOSI_RADIO
PA3_SPI_CS_RADIO
R581K
C44
100nF
J4
3V3
LED-DIMMING
LED-ON-OFF
R59
1K
1
2
3
4
TERM BLOCK PLUG 4POS STR 2.5MM(1778858)
SPIRIT-1 Transceiver Unit
U10
PA10_GPIO_2_RADIO
2
PA9_GPIO_1_RADIO
3
PA8_GPIO_0_RADIO
4
3V3
10K
C50
100nF
5
GPIO_3
SDN
GPIO_2
SPI_CS
GPIO_1
SPI_MOSI
GPIO_0
SPI_MISO
Vin
SPSGRFC
GND
R63
1
SPI_CLK
11
PB5_SDN_RADIO
10
PA3_SPI_CS_RADIO
9
PA4_SPI_MOSI_RADIO
8
PA6_SPI_MISO_RADIO
7
PA5_SPI_SCK_RADIO
Programming Connector
J3
PA13_SWDIO
PA14_SWCLK
NRST
2
4
6
8
10
1
3
5
7
9
3V3
6
D22
LED
PA1_GPIO_3_RADIO
HEADER 5X2
STEVAL-LLL008V1
Schematic diagrams
page 5/7
STEVAL-LLL008V1
Revision history
Table 1. Document revision history
Date
DB4057 - Rev 2
Version Changes
04-Mar-2020
1
Initial release.
06-May-2020
2
Substituted X-NUCLEO-IDB05A1 (no longer recommended for new designs) with X-NUCLEOIDB05A2
page 6/7
STEVAL-LLL008V1
IMPORTANT NOTICE – PLEASE READ CAREFULLY
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST
products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST
products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of
Purchasers’ products.
No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. For additional information about ST trademarks, please refer to www.st.com/trademarks. All other product or service
names are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2020 STMicroelectronics – All rights reserved
DB4057 - Rev 2
page 7/7